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Which grade are you in?
second, tenth grade, first grade

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I was in the eight grade when I learned to program.

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I got my first computer when I was in the sixth grade.

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What me gets excited is
being able to fix peoples problems

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You can express yourself;
you can build things from an idea.

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Computer science is the basis for a lot of the things


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students and proffesionals will do
for the next 20 or 30 years.

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I like programming because I like helping people.

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I get the opportunity to build something
that's gonna make peoples life easier.

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I think this is the closest thing we have to superpower.

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Getting started is the most important part.

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I'm a beginner and I want you to learn with me.

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Hi, my name is Lyndsey

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I majored in theaterian college, 
but I also majored in computer science.

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And now I'm model, act and write my own apps.

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Let's use code to help Anna and Elsa 
as they explore the magic and beauty of ice.

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You'll create snowflakes and patterns
if you ice-skate

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and make a winterwonderland
which you can share with your friends.

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In the next hour, 
you're going to learn the basics of how to code.

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Traditionally programming is usually in text,

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but we will use blockly which uses visual blocks,
which you can drag and drop to write programs.

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This is how even university students learn the basics.


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Under the hood, you are still creating code.

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The concepts you will be learning 
are concepts which computer programmers are using every day

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and are the foundation to computer science.

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A PROGRAM is a set of instructions 
that tell a computer what to do.

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Let's build a code for a program that will help Elsa to create a simple line.

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We will use this later to create more complex patterns.

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Your screen is split into three main parts.

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On the left is the ice surface 
where you will run your program.

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The instructions for each level 
are written right below the surface.

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This middle area is the toolbox and each of these blocks
is an action Elsa and Anna can do.

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The white space on the right is called the workspace 
and this is where we will build our program.

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To move around the ice surface, you wiull use the "move forward"-block.

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Here the move forward block says,
move forward by 100 pixels.

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When we press run... What happens?

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Elsa moves forward a certain amount on the screen...
100 pixels in fact.

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Pixels are basically very tiny squares on your computer screen.

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The other block in the puzzle sais:
"turn right by 90 degrees".

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When we use the "turn right"-block,
that makes elsa turn a certain amount.

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You can play around with how far you want elsa to turn.

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The angle is measured from the path ahead of Elsa,
so this is the 90 degree turn...

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and this is an 120 degree turn.

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And remember, you can change the number of pixels or degrees
by clicking on the arrows next to them