hi and welcome to code break my name is
Hadi and across zoom Facebook live and
YouTube live we have tens of thousands
of people joining us
so yeah they were hoping to build the
world's largest live interactive
classroom with so many students at home
my team at code.org invites families
everywhere to join us for a weekly dose
of inspiration community in computer
science I'm here with my daughter and
sidekick Sophia she's a budding computer
scientist and I'd like to introduce our
first special guests the amazing actress
and activist Yara Shahidi yeah hi how
are you and we're you calling us from
I'm good I'm calling from LA where I am
with my family quarantined and how are
you spending this time with everything
closed I mean it's been a mixture of
keeping busy while learning and then
lots of family activities one of my
brothers made a podcast in his free time
so it's really just been trying to stay
creative and you've been in school that
school just finished for you yes the
other day literally mmm 24 hours ago
very proud my last papers and when
you're you you're sitting in Harvard
where you're even yeah I'm a sophomore
so I'm now a rising junior awesome in
Yara's do many thoughts you want to
share with students who like you have
been studying at home and are probably
struggling with staying motivated in law
school no I know I know and understand
because not only am i doing it both of
my brothers who are in middle and high
school have been distance learning I
know it can be difficult I think the way
that I've done it is I've tried to
create my own goals for myself because
it's sometimes hard to stay motivated
with their goals so whether that I mean
something super simple I am a secretly a
grandmother so whether that's
knowing that I get to crochet when I
finish an assignment or get to go learn
a new skill then that's usually what
inspires me to get through whatever I
need to finish it well I'd like to
introduce another special guest fuzzy
Kawasaki fuzzy how are you hi I'm doing
great
how are you I'm great at fuzzy is the
inventor of Google Spreadsheets and
where are you calling us from I'm
calling from beautiful New Jersey
overlooking New York and probably the
question everybody wants to know what
kind of name is fuzzy what kind of name
is fuzzy it's a very it's a very popular
Persian name no it's a nickname my
soccer coach decided to call me fuzzy
and it's stuck and how will you serve me
well because everyone who meets me
thinks oh what a what a funny name and
it's a good conversation starter all
right well we're gonna start today's I
guess conversation with the computer
joke of the day and so he has I've got a
little sound machine that uses because
we have so we're kind of low production
here idea you wanted to tell fuzzy and
you are on your joke of the day okay
what did computers do just before going
to bed what did they do spreadsheets
Duke just for fuzzy thank you now let's
meet our live audience we're gonna
switch to gallery view so we can see the
names put on the faces of all the
students are joining us on camera can
everybody wave and say hello everybody
I'd like to also have us say hello to
the rest of our audience we can't see
the majority of our audience but I'm
gonna screen share as they were joining
this we give them a chance to put where
they're from
on a map so here's our map oh wow Yara
and fuzzy I don't know if you expected
to have people
from all over the world but time zones
very far away from here
yes great look that everyone's tuning in
yeah
a lot of you yeah it see there's people
as early as 6 a.m. 7 a.m. 1 a.m. really
from all time zones for joining in that
for this live classroom which has really
just been an incredible thing to see
happen during this pandemic so also just
you know these students are they range
from age 66 260 from all grades there
are also different levels of experience
some beginners some intermediate some
advanced if you're advanced please be
patient with us we're gonna start with
the easy stuff and if you're a beginner
please stick with us through the whole
classroom even if it goes too fast for
you hopefully you'll soak something out
also if you have questions during the
show for either of our special guests or
for me
you can visit code.org slash questions
to submit your questions today we have
three parts in our episode we're gonna
talk about variables today and we're
gonna learn about variables first in an
unplugged way then about using variables
in games and lastly about using
variables and apps valuables are one of
the most important things in computer
science but before we move on to today's
lesson we want to welcome some students
to demo their creations to our special
guests last week's challenge was to make
your own flow chart or to modify the
apps we made for you the magic 8-ball
app for the DECA stroller app and each
week when you share your creations we'll
invite you to show them the best ones on
next week's episode so Yara and fuzzy
you ready to meet our two students from
last week I'm so ready
alright so doc who's from India
submitted a dice roller project this
week doc we're gonna unmute you can you
tell us more about yes are you there
yeah we're from India hello hi their way
from India India let me screen share
your app and then you can tell us more
about it it's a very nice hat by the way
it's actually no there are two variables
first one is first variable the first
variable we put a straightforward
equivalent to random integer second one
there if there is variable which we put
equivalent to random number which which
it picks from 1 to 10 as as we click
dark then there is number come whether
it comes 1 then there is equal to 1 6
then it comes to then earlier we press
alia then it comes 5 so this number 6 is
more than 5 result Dutchman's so it's
like check not only we made a dice
rolling after you guys created this from
scratch again click then action alia and
shows who wins aliens then click again
click again click ducks again here
earlier and result here you go duck she
wins again there are two numbers equal
they are two numbers equal then mesh
right then
the ties I got it and it's all your data
disturb my sister all right very cool
the second app we have is from Abigail
unfortunately Abigail's audio isn't
working so she can't speak with us
Abigail's from Vermont and she took our
magic 8-ball app which was a very very
simple app and made something much more
complicated she made six different or
seven different six different games only
one Yara or fuzzy are there any of these
you want to try Yara go ahead I play
tic-tac-toe excellent I'm not not that
Jerry tic-tac-toe is the one she hasn't
finished yet
okay it's the only one I tried before it
doesn't work yes you are the truth or
dare yes
okay let's try two three all right Yara
do you want on truth or dare I'll do a
truth all right let's go Sofia you want
to click I'm nervous oh gosh
it happens okay just because you're
alive of 10,000 people you have a
question from Yara so there's another
one of these apps is the cursor maze
check this out Sofia has wanted to play
this all morning so this is a cursor
maze app where you need to control the
mouse to get from the start to finish
without touching any of the blocks so
she has to move the mouse very carefully
and it gets harder than easy yeah and
it's really simple after this I don't
know this is one out of six apps and
then you have to click next level right
this is fenomena Thank You Abigail for
sharing that app Thank You Abigail yeah
thank you
you want to play an applause sound for
both Abigail I'm - for their apps yes
sorry you were on mute alright so for
today our word of the day is variable a
variable is a way to store hold
information that can change you may be
familiar with variables from math class
like in that class when you say X equals
5 X is a variable and it holds the
number value 5 but variables and
programming are different in two key
ways first of all and programming and
computer science valuables can change so
X can start like a 5 but then it can
become a 6 or a 7 or an 8 it doesn't
stay the same the second thing is
valuables and computer science can
change can hold many different types of
values they can be numbers they can have
words or even more complicated
information now why would we use a
variable anytime a computer program
wants to keep track of anything because
it's the variables basically act like
its memory like to remember the score
and a theme or to remember the names of
the players or anytime you type
something in an app the app remembers it
in America now we're going to see
variables in action with health
Yara so we're gonna switch to gallery
view to see all the students on the
screen and I want every student on the
screen including fuzzy and Yara to all
the variables your basic variable and
each variable has a name so yeah we can
see your names on the screen so Yara
what's your name
it's Yara Yara so that's the name of
your variable so each file gets assigned
a value so I'd like you each to pick a
number between 1 and 10 and to hold up
your number up on the screen so we can
see all the numbers assigned to all the
different variables
alright so Yara what number are you
ships
storing seven you're seven so you could
say that Yara equals seven so now Jana
I'm gonna ask you to change your value
and so when I do you can like shimmy
your hands when you get a new okay
everybody else keep your numbers up and
I want to make a number that combines
the numbers in the variables Owen and
Evelyn so we're gonna highlight Owen
that's Owen Owen what number are you
showing that's a two and then Evelyn and
Evelyn I think is showing a three so
y'all I want to say Yara equals Owen
plus Evelyn oh so you're already a five
you changed from a seven to five so when
we say yarn ankles Owen Plus Evelyn you
set one variable to the value of two
other variables now Owen and Evelyn can
you both change your numbers pick a
number between one and five a different
number all right and Yara can you
reevaluate the are equal Owen Plus
Evelyn all right so you see now Owen is
a four and Evelyn is a 2 so Y became a
six now I want to ask Evelyn your number
changed did your name change no no and
that's that's right because with
variables the value of a variable can
keep changing a computer program can
change it all the time then
the variables stays the same all right
you can put your hands down we're gonna
do something totally different now we're
going to be variables in a different way
what we're going to do is show how
variables health computer programs
remember and to do this we're going to
have yara act like a computer program
for ordering a food basket okay
yara since you're an actress you're
gonna act like a computer who can't
remember anything without saving
information and we want a great role yet
mm-hm
we we wanted to act like you have no
memory without the help of your
variables and all the students you see
on screen are gonna be your variables
they can save information for you is
that sound okay that sounds great right
did you remember anything I just said no
actually you need to remember what I
said but once you're running the
computer program you should forget it
all great got it Sofia here is gonna
order a fruit basket from Yara and Yara
each time Sofia asks for new fruit to
add to the basket I want you to ask one
of the student variables on screen to
save that piece of information by
writing it down so you can say for
example Naomi please save an apple and
Naomi will write it down and while
you're doing this
Fuzzy's you're going to be a counter
variable I want you to start with the
number zero and then each time Sophia
asks for a new fruit add one to your
number so you'll show how much fruit
Sophie has asked for I've been packing
are you ready yeah all right Sophia go I
like apple please stam yo can you
remember an apple it's the same I was
going to write this down next I like an
orange Seth can you do me a favor and
remember orange and write it down Seth I
want a pear a new shot can you please
remember pear for me can I have a grape
please Naomi can you remember grapefruit
for me please I'd like a Kiwi - all
right Serena
will you write down QE for me and lastly
I would like a banana okay Amir can you
remember banana for me please all right
before we make this fruit basket how
much is this fruit order going to cost
let's say it's $2 per piece of fruit how
much should Sophia pay let's do a poll
from our audience all the folks on zoom'
were not on camera you can look at fuzzy
the counter and we are going to ask how
much does Sophia's fruit basket cost is
it $12 or is it two dollars per fruit or
is it two times fuzzy or is it all of
the above all of the above God said
don't tell us the answers people are
actually filling out the poll but all
right almost half the students have
already voted fuzzy sort of gave away
possibly gave away the answer might not
be right we'll see
all right let's share the poll results
of what students guessed
all right before it was almost a dead
heat but we have now 70% of you guessed
all of the above and that's correct so
the food basket is gonna cost $12
because it's $2 per fruits and Fuzzy's
been the food counter counting how many
think Sophia's ordered now Yara dear
remember Sophia's fruit order I don't
I'm not sure anybody remembers it but
since you're a computer program you
don't need to have your own memory your
variables save that for you so if you'd
like you can now ask your variables to
show their information up on the screen
so you can see it yes please well my
variables share what we've stored so can
all the variables hold up your pieces of
paper so Yara can see see an apple pear
grapefruit keep holding it up so y'all
can you now from what you see make the
fruit basket that that's Sophia ordered
thrust yes
I see an apple a pear a grapefruit okay
so I have some fruit with me I have my
apple have my kiwi I'm going to draw a
pear I have my grapefruit and I'm gonna
do a nice round pear for everybody
artist so yo can you now hand the bowl
of fruit to Sophia together we want to
test out a really new zoom feature
called zoom fruit delivery gladly
Sophia thank you everybody for the
variables for the healthy determined
helping our food delivery program
remember her fruit order so to recap
first we use variables to store numbers
and we showed how the values changed and
next we use variables to store text so
the computer er could remember how to
prepare a food order that we're gonna
explore more about it valuable soon but
first let's learn a little bit more
about God so Yara you're our third
special guest to play our lightning
round game we're gonna put 60 seconds on
the clock and Sophia's going to keep
score actually on an app she Scott is
gonna keep score and and your goal is to
get through as many questions as
possible and beat our current score of
nine nine questions which were answered
by Sal Khan so you want to make the
comments but also make it fast
I've got it all right Sophia go umm
country you have all you want to visit
but haven't Greece advocated what did
you want to be when you grew up a
historian favorite drink um my go-to
black tea my side ask something you
can't ever eat no matter how many people
love it sardines the last person you hug
know
living with you not living with me oh my
goodness
my friend Jacqueline 30 seconds your
favorite smell um I love just any
kitchen smell I love this smell of the
kitchen being used because it means that
we're about to eat
what were your hobbies when you were a
kid I loved everything from exploring
and I was in karate and I would rock
climb what was her score seven so that
was variable so close thank you so much
and we're gonna play a little applause
sound all right so I have a few more
questions for both fuzzy and yah for
each of you how did you become a
standout in your field and especially in
a field for both of you that has a lack
of diversity and representation you want
me to go well yeah go ahead fuzzy so I
don't think it was intentional when I
I've always thought that diversity was
very important and I'd like to I tried
to work in companies that were very
diverse I find that having working on
products that are user facing it's
really important to build stuff that a
lot of people can use so I try to
surround myself with a lot of diverse
people and that would be able to build
things that you know have have different
viewpoints one of the things that I
remember for example with sheets is
having someone on the team that was
basically hearing-impaired originally
impaired helped us empathize more and
build products that met the needs of
visually impaired more so diversity was
really important for us there and how
Hollywood doesn't have nearly as much
diversity as a lot of people who wish it
did yeah um well I'm grateful because I
got into this because I love to read I'm
sorry till I actually didn't watch much
television until I was 13 we'd watch an
hour
on Saturdays mouths about it so it's fun
for me to be a television actor who
didn't watch TV but it was because I
love telling stories and so a lot of
what I do is when I'd get a script or
have to go audition it was really about
what story are we telling and I think
similarly to fuzzy I found places in
which diversity was really valued so
whether that be on blackish or even now
I'm grown ish it was something where I
didn't even have to be a conversation
because everyone knew how important it
was not only for a great work
environment but just for a great final
product - and we've had the best time
and now we are in the role of making
television and that has been so much fun
because we get to bring to life stories
that I'm just discovering or learning
about and we're constantly meeting new
people who have incredible things to
share and why do you think it's
important to increase representation of
women or people of color and fields such
as technology it's always been really
important to me I had the privilege of
going to an all-girls school and I
remember what that did for me because I
at no point did I process like oh the
sciences weren't meant for me or stem
wasn't meant for me because I was
surrounded by people who proved that it
was but I think just to Fuzzy's point we
need diverse teams of people in order to
make products that reflect what our
world looks like and I think so much so
many people have so much to contribute
that it's important that we decrease the
barriers that just stop people from
being able to contribute study computer
science while you're at Harvard or high
school either does it's so funny that
you say that I'm about to sign up for a
class for my summer class I haven't
decided yet
I have friends so a lot of my actual all
my girlfriends I think I've taken a
computer science class and I'm beyond
I'm the odd person out right now so I'm
taking more suggestions I'm speaking of
diversity by the way one thing that's
unique is all of us right here Sophia
myself fuzzy and Y are all for Iranian
Americans the way nice t-shirt huh D
yeah I'm wearing an image
t-shirt because fuzzy and I are also
immigrants as well
Oh Thank You Evelyn for showing a heart
so yeah we have some questions from our
student panelists as well one of our
producers at Kyra is going to introduce
these students hi ara so we have two
questions one friend a ha who has a
question about girls and achievements
and they hum going to onion you what
suggestions do you have for girls to
stay confident in whatever field they
choose and to become leaders in their
community yeah hi I know that's a
wonderful question I think what I've
always relied on is I always say my
support network and so for me that's my
family I come from a really cool
matriarchy of women but that's also my
chosen family my friends my professors
and teachers and the reason I say that
is that there's so much happening in the
world that often times you can run into
barriers that try and convince you that
this is an ear space but that's why I
rely on the people around me not only
for that confidence boost but to
constantly get better at whatever I'm
trying to achieve but I think having
those people around me have helped me
through every step of the way
and to always be open to learning thank
you so much and we also have our last
question from Amir so Amir I'm going to
unmute you he had a question about
achievement yeah what drives you to
achieve your goals and motivates you to
never give up
that's a great question Amir and I've
been thinking about that a lot
especially now that we're all at home
and life looks very different right now
but I think what's been important for my
entire family are finding ways to
continue to be of service to my many
communities not only the communities
that my family are part of being black
in Iranian but just the many communities
that I think support us and so sometimes
that small like on blackish being able
to tell really great stories that
hopefully spread a point of view and
sometimes that's trying to figure out
how I can use an opportunity to give
back and how I can support other people
but that's always helped motivate me
because otherwise if you're not doing if
you're just doing it for yourself
sometimes it's hard to find the
motivation but when you do
for the betterment of so many people
around you then I think that's what
convinces me to get up when I'm not
trying to accomplish something to go to
go do it thank you you're on thanks Amir
yeah thank you thank you so much and
Yara thank you for joining us today to
share your story we're all a part of
Yara soon so can we switch to gallery
view for the audience so all of our
students can wave goodbye to Yara and so
if you can you play an applause thank
you thank you my first computer science
class thank you so much thank you
alright fuzzy let's chat a little bit
more though bye bye Yara so fuzzy we're
gonna chat a little bit more about your
background and your work at Google with
Google Spreadsheets while fuzzy and I
chats if you have questions don't forget
to send them in at code.org slash
questions you have about two minutes if
you want to submit a question so fuzzy
how old were you when you began learning
how to code and how did you get into it
what's your story about how you got into
this I don't even remember how old I was
because I was a as you can tell I'm I'm
not a young young young one like you all
so back then I was actually history
major in college and when I graduated I
didn't I was having a hard time finding
a job so I ended up selling life
insurance for a while then real estate
that my wife said wouldn't it be great
if we open up a Subway sandwich shop and
worked all day and all night together
and I said sure we tried that for a
while it wasn't only it wasn't until my
30s when I actually started really
coding I had a job in the banking
industry and was coding there and
teaching myself most of the coding and
that's when I came up with the idea of
taking sell spreadsheets and converting
him into Web Apps and the idea with the
help of a lot of amazing people we sold
that product to Google and it became
Google sheets so it wasn't like I wasn't
coding as a young kid like everyone here
that's really kind of what most people
envision that people
start companies and sell them you know
our whiz kids who learn when they're
like really young and then sell their
startup when they're like right out of
school or something but you'd between
being an insurance salesperson and real
estate sales persons the sandwich sales
person make great sandwiches to make
great sandwiches yeah it's pretty
amazing that Google Spreadsheets was
basically an acquisition by Google of a
company made by a sandwich style
sandwich shop owner and by the way if
you think about it there's a connection
between spreadsheets and our earlier
activity when we were all in a grid the
students were in a grid each one of us
was a variable just like a spreadsheet
stores a value in each of the cells in
its grid and each cell in a spreadsheet
has a name like a 1 or B 1 or C 2 just
like a variable and in fact I often tell
people if you've ever written a command
in a spreadsheet using a formula like
saying this cell is going to be the sum
of this and that you've written one line
of code and that's how you can start
learning computer programming so now
we're gonna go into the second sentence
of today's class which is learning about
how to use variables and games and so
fuzzy Sophie and I are gonna use we're
basically gonna use ku dog to modify a
game using validus and I'm gonna change
the screen share to just show code or
game screen just one second
all right can you see my screen yes I
can it's wonderful thank you so for
those of you who are not familiar we're
in co.org sprite lab on the left-hand
side is where the code will be running
where we make our game on the right hand
side is the code for this game and
there's all these little commands and
here in these different drawers that we
can look at now this code is already
been written and I'm not going to run
through how it works what it does is it
creates a bunch of these little players
called sprites on the screen so it's got
this little alien who's a good guy and
then these purple aliens are bad guys in
these coins and when you run up the Run
button all these things float around and
you can use the cursor keys to move the
good alien that we control you can also
use the cursor keys on a keyboard the
arrow keys move the good
the good little alien but what we wanted
to do is when they're good little alien
catches a coin we want to count the
score so Sophia you're gonna do that
using valuables and so we're up here and
it says when a coin has been gotten by
the good alien so what is the first
thing we want to do so if you go into
the sprites menu and the first thing you
want to do is remove the point so bring
out the remove block and then take out
or change that to the coin actually no
don't change that because that's gonna
remove all the coins take that out take
out this little block and go into the
sprite menu and choose this sprite
because if each removed the coins but
all of them would go but you want to
trim this just this right and now when
you do this
that's right that you get will disappear
but what we also want to do is increase
the score and at the start of the game
we created a valuable score we set the
score 2-0 so now what I want you do is
to go into the variables section and set
the score see it's a set score to
personally not set score to change score
change and then clear that I and change
it to score and so we're gonna change
the score by one you want to change it
by one or by two let's leave it by one
now that's good to stuck me when I was
the counter exactly that's just like
here now so if you hit the Run button as
you're going around you can control the
little you couldn't roll this little
thing and it's catching these little
coins and the coins are disappearing but
we're not seeing the score so what we
need to do is we actually need to
display the score on screen so so if
they go into this area of text the
section that says text and bring out the
print button and in there you want to
type score but we want to combine the
score the word score with the value in
score so go into texting
and bring out this join block and
dropped it in there and inside the print
instead of a little score block yeah and
then join the the word score with the
quotes around in the Kulin and then in
the variables bring out the value score
so now it's going to tell the story
which time we get one of these things so
now if we hit run I'm gonna play this
this time I can run around and catch the
coins and see I got a score of one no
score to the score of three and so on
now I want to use a different battle it
looks fuzzy fuzzy you can also count
these as well what I want to do next is
actually make it so that our player gets
smaller and smaller and the points get
smaller and a harder to catch as we go
along so what we need to do is go back
to the start of the game and create a
new variable we're going to create a new
variable for the size of these so go
into variables and say set I to and
click on the eye and say rename this
variable so we're going to change that
to size the bargaining is going to be
size all right and we're gonna set size
can you drag out the number zero and set
the size to 50 all right so this is
gonna be the counter for what our size
should start to ask but what we want to
do is now every time you capture a coin
you want to change this change all the
sprites to that size so now go into
actions actions and see where it says
set size 250 bring that out and so when
a coin is caught change this coin size
but instead of choosing 50 you pull out
that 50 and then go into very ease and
pull out the size value now size is
going to keep this size at 50 so before
we do that we actually want to reduce
the size as well so go into variables
again and save huge
change I by and assuming keep changing I
change the size so we want to make this
eyes smaller it started out as 50 if we
reduce it how much do we want to change
it by how about by negative negative 10
so it'll start us 50 then become 40 then
30 and so now we want to do this not
just for the points let's make
everything smaller so click this block
and hit command C to copy it and the
command V to paste it and I'll put that
in there so not only the coins change
sides make the good little alien change
size and then click that whole block
again and hit command C and command V
the dark side purple aliens right now
try they're doing again yeah you're
doing great
oh my God look how tiny you got you're
getting a score it's super hard to see
you anger is not as good as me it's so
these aliens are now size 10 so it's
hard to see them all right that was
super fun
so I'm gonna stop this for a second
mount like all things you make on code
over one thing we can do is we made this
little game and we can share it out and
if you want you can actually I'm gonna
make this a little bit bigger you can
actually scan what we this QR code using
your phones and the app that Sophia made
would then show up you just tap the
little thing that shows up on your
screen and that after we just made this
on your phone to play it so if you don't
play it right now
but instead of doing that right now
we're gonna send this app to you an
email later so you can actually improve
on it more in fact one of the things we
wanted to do is figure out what happens
when the good alien runs into the bad
purple aliens that's something you can
do now before we go into the next part
of our episode actually want to take a
pause and do our trivia questions so
it's trivia attack yourself
so fuzzy we want you to read the trivia
question for today's audience and
everybody of the frosted zum caulk and
answers make sure to read the question
and all the answers and should I answer
it like last time what was the first
computer that had real-world practical
use
was it the ENIAC the Turing machine the
baggage the Babbage calculator or a
human who did the job of a computer
let's see who's the who's ahead looks
like I'm watching the results come in
not everybody else can see them but we
have about half of our audience is
already voted I don't know I don't know
what the image of you voted and this is
a pretty tight one this is tight I don't
know this is tricky so almost everybody
has voted so can we share the results of
people's polls
Wow everyone thinks that more most
people think it was a human so I'll say
straight up the Turing machine isn't
actually a physical machine it's a
conceptual abstraction and the Babbage
calculator was really also theoretical
calculator Charles Babbage came up with
the idea of a computer but neither of
those are actually sort of real-world
practical uses I'm going to give you the
answer be a screen share so just one
second I'm going to share my screen
the ania computer built in 1945 80 some
80 years ago it was 800 square 1,800
square feet of office space it took and
it weighed 32 tons this was the first
modern anumana the first computer with
practical use and used vacuum tubes
instead of transistors and electricity's
and today's phones like Sofia's phone
right here have a tiny chip the size of
a fingernail that's literally a million
times more powerful than this first
computer however this wasn't the first
computer that had real-world practical
uses the first computer as early as 1613
a computer was somebody who did
shooting work like math work like math
calculations and throughout the 1800s
and even the 1900s entire teams of
computers often women would work on hard
problems because we didn't have the
machines yet to do this work and in fact
here's pictures of some of the women who
helped get the man on the moon it helps
America's space program these young
women were called computers that was
literally their job and if you've seen
the movie hidden figures at showcases a
woman named Katherine Goble who's one of
these women these women basically did
the work of now today's modern day
computers and I think that's interesting
because in today's world technology is
constantly improving in a way that
changes jobs and human jobs are being
replaced by machines and the computer
itself used to be a human job long
before we have what we what we now think
of as computers so we're now going to
move to the next segment in our episode
which is using variables and apps and
we're gonna say goodbye to Sofia
I see that and we're gonna welcome my
second sidekick and my son Darius hi all
right Darius ideas so what we're gonna
do is we're gonna make an app that helps
us invent a story it's gonna be a tell
me a story that is really nervous a
little bit a little bit nervous it's
always a little bit nervous to have a
big audience and it's especially nervous
when you're coding in front of the big
audience coding by yourself is a lot
easier because you can make mistakes and
then you can fix your mistakes making a
mistake in front of thousands of people
is definitely different so we're gonna
share screens here we're now in co.org
app lab and what you see here on the
left is the app we're gonna create on
the right is the code and we've started
some of this for you I'm gonna walk you
through this
we're in design mode you can see this
app has a bunch of text inputs where you
can enter a name an adjective a noun and
a verb and when you click this button
it's not doesn't do anything yet because
we haven't written the code for it but
we would like it to do
is to store all this information just
like yara asked the valuables to
remember the names of fruits we want the
this app to remember this information
and then to switch to screen two and to
fill in those different words to finish
this sentence to make a story so this
here is going to be the name and this
year is going to be an adjective and
this year it's going to be a noun and so
on so let's go to code mode and write
the code of what happens when you click
this button let's remember the
information here using variables fuzzy
will you be able to help us doing this
absolutely
alright so darius what i want you to do
is if you look here there's an on event
block is what happens when the story
button gets clicked and what we want to
do is get the text from these things i
store them in baggies and if you look up
top we already have created the values
for the main the adjective the mound etc
so what i want you to do is to go under
the values category of demands and drag
out the x equals but instead of x change
it to your name and you have a small
type of your name and so the value to
put a name go into your controls and you
want to get the value in the text editor
so use the get text block and you want
to do get text the main input alright so
what that's going to do is store that
into that valuable and then what we want
to do this is what's happening when the
tell me your story button is clicked so
what we want to do next is then it's
change the screen so go into the blocks
here know and and find this set screen
button it's near the very bottom right
there the set screen and pull that up
and now we're going to change screens at
screen too and just to remember what
screen to is over here you can click to
in design mode to change screen to so
that's what screen to its and i go back
to
right now once we change screen to
screen - we can set the text so this
text isn't the dispersed label up here
if you can move your mouse above this
these sort of question marks that's
where the name output is going to go so
go up and find the set text block it's
at the top you're doing great date and
set the text for name output right now
it's gonna fill it up with the word text
but we don't want to set the name output
to the text we want to use it about and
our variables let's see what should we
put over there for the variable yeah
this text here or the text I would say
funny no we want to change it to what we
stored in the variable so we're gonna
use your name which was the value that
we remembered oh I see alright so now
let's run this and see how it works it's
okay now hit run so now it's gonna say
let's come up with a story and so we're
gonna enter a name fuzzy pickles random
name for us random name
oh yeah pick darius darius that wasn't
very random
now click tell me a story and so you can
see it says one fine day darius walk
into a blank blank and blank over a
blank it was a truly great day so that's
our first step of remembering what
darius entered but we need to do the
rest of it so we're not going to do this
all typing in the code right now we've
actually written the lines to copy
seduce click show text when you click
show text you see all this code of
JavaScript instead of blocks and if you
go to the very bottom you see where it
has all these adjectives already made
the adjectives and nouns and all these
get text blocks can you select all of
that and then cut it this looks like
really hard it looks like what my code
yes paste it there and then go down to
the bottom again and then all these set
texts
put it again so fuzzy yeah this what
we're doing right now is no longer like
dragging and dropping blocks it's
dragging it's literally and how real
coders work in new texts but one thing
you can notify Z is even though we're
we're here you can still drag and drop
blocks into here Wow
turns out to flex that's kind of neat
and then once we're done we can change
the back to block mode and everything we
copied and pasted is back into blocks
and so now and I'm going to close this
so you can see it more easily so what we
did now is when the story button is
clicked we collect just like Yara asked
Samuel to remember a banana and so in
soda a number of here we're going to
change these variables your name is
going to remember what's in the main
input and a man and what's the name of
this spiral each of these virals
remembers each of these things here so
when we change the screen when we change
the screen in each of these labels we
can set text and we get the values in
the baggages Siderius can you run this
and now we're going to try it out
so let's now come up with this dinner so
why don't you now come up with a name
pick a random one like me you wanna do
fuzzy okay
all right for the adjective fuzzy you
want to pick a good adjective give us a
fun yeah I'll go with funny like I was
putting before funny yeah
which rhymes with fuzzy it rhymes with
fuzzy and then for the third so for the
third for the second adjective well
let's do an audience poll so great
blanket poll so the entire audience can
choose the adjective we use so we can
choose funny braid famous or clumsy I
kind of bet I know what people are gonna
choose yeah we were paying this we were
pretty much certain what everybody is
gonna think is their favor
all right almost all of you have voted
all right so can we share the results
all right the most popular adjective is
clumsy so Darius can you type the clumsy
so steamed funny clumsy now bears can
you pick another now the grocery store
grocery store actually no I don't want
to type all right and then fuzzy you
want to pick another now yeah how about
a puppy happy and then last let's use an
audience choose a verb that ends in D so
can we put up the audience poll so
appeared sneezed jumped or danced and
let's let the audience choose what they
want all right
and can we share the results of the
audience votes all right the winning
answer is sneezed so Daris can enter
sneezed and then tell me a story so one
fine day buzz if you want to read it for
us sure but I'm gonna get all emotional
this is a story my mom used to read to
me when I was a baby
one fine day Steve walked into a funny
arcade and sneezed over a clumsy puppy
it was truly a great day I remember it
like yesterday when she used to read
this to me that's a wonderful story and
by the way fuzzy I have inside
information that your mom is actually
watching this today so Wow so she'll
confirm this confirm this so thank you
so much fuzzy for helping us with this
app and what we're gonna do by the way
is you're gonna get an email with this
app so you can improve on it yourself so
you can make multiple stories there's
multiple changes you can make to it so
for example you can take out this very
last line and replace it with another
variable you can make a second story
that uses the same inputs and you can
let their user to click between the two
story
you can make a longer story you gonna
have this app I'm not gonna use the QR
code to share it we'll send it to via
email I want to then also get some
chance for the audience questions that
people submitted for fuzzy so Akira
our producer is gonna join up again and
then share the questions for fuzzy at
this point I am an expert question asker
overlayer I'd like to think so fuzzy
this one is from Caitlin sea in Wyoming
she said what's at max have you had in
your career and how did you overcome
them what setback that's a great
question
setbacks I wouldn't say it's setbacks
because I always learn from every single
experience that I have and it's been
literally just you know making sure that
I've learned over time that I do much
better when I really enjoy what I work
on and I've learned that like trying
different experiences and if it's not
working out going to the next one but
using the last one as a learning
experience is really important so when I
was selling life insurance realizing
that I didn't necessarily I wasn't as
good at selling but I still expand I
learned a lot from it and then I moved
on to the next thing so you're always
just learning and trying new things and
you just can't give up thank you so much
buzzy and this next question is for both
you Hadi and fuzzy this is from Alice in
Zambia she said universities are
expensive so how can I learn computer
science without a university education
so judging by the question I'm assuming
she's a bit further along and so if you
both could speak to how can she learn
the basics and also how can she continue
to grow as she reached reaches those
more advanced stages how do you want to
take this or I can take it I can take it
all though Fuzzy's a perfect example of
somebody who's had an incredible career
creating and creating google
spreadsheets and even Google Docs and
Google Drive there's being used by over
a billion users and he never went to a
university to learn computer science he
basically taught himself coding and so
there's lots and lots of people that
teach yourself I also taught myself when
I was much younger living in Iran
but when I tell myself it wasn't nearly
as easy you needed to use books and
learning computer programming as part
today if you use code org as a beginner
you can learn all the stuff that we were
showing you you can use code or to
basically learn from our lessons that
guide you through them and you can also
get full computer science university
level computer science classes online as
well and in fact if you visit code.org
we link to some of the best university
computer science classes such as cs50 at
Harvard which I suspect is their class a
Jana she D is going to take when one of
either whether junior year senior year
starts and it's a year-long computer
science class that you could pay tens of
thousands of dollars to go to Harvard to
take that class or you can take it
online besides that there's many other
online university classes that you can
see links to from the code.org websites
and if you sign up on co.org slash break
for a mailing list you'll actually will
link that in our weekly email after this
episode oh wow just to expand on that
the best way to learn is to have a
project in mind so I love the fact that
when you go on code or you're actually
building something and learning it's
much better than reading a book whenever
I've done I've learned I in the past I
would get all sorts of books and then I
would try to use it to build something
exactly and we're so lucky we've had
students now have created 80 million
projects on code.org in just the last
two years so you won't be alone so we're
reaching the end of our time whether the
fun doesn't stop here we're gonna send
you all an email within the next hour
with all of our weekly challenges if
you're not on our email list go to code
org slash break and sign up and for this
week's challenges you're first gonna get
some practice you're gonna practice
variables to make a little bee that goes
and fetches honey and for our older
students there's some variable puzzles
that you can do an app lab and then for
this week's challenge you can either
modify the alien coin game that Sophia
made or if you can add features to a
storyteller app that there is made or do
both of those and when you finish share
with your parents if you have social
media you can ask them to share the app
on social media with hashtag go break or
you can email it to us and
that will pick two of the best ones that
you submit to highlight them and invite
them on our show next week and for
parents our activities each week include
activities that students can do on a
mobile phone if you don't have a
computer or even an unplugged activity
for students who don't have even a
device of any sort so please sign up for
our mailing list at code.org slash break
and lastly before we say goodbye I want
to share next week's special guests
which I'm very excited about we have two
special guests next week
one is Macklemore the famous rapper and
the second is Scott Forstall the
inventor of iOS and the iPhone so that's
going to be a really special episode and
not one to miss as we part I want to say
goodbye to our special guest fuzzy so
can we all switch to gallery view and
I'm going to play a quick round of
applause for fuzzy since so yeah it's
not here for us and all right everybody
good bye I by Darius great job thank you
and if you enjoyed today's episode
please spread the word if each of you
invites other pounds we're gonna to
gather make this largest interactive
classroom
thank you all goodbye see you next week
and if you're alone take a code break
you
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