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Which grade are you in?[br]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[br]being able to fix peoples problems

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

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Computer science is the basis for a lot of the things[br]

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students and proffesionals will do[br]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[br]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, [br]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 [br]as they explore the magic and beauty of ice.

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

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

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In the next hour, [br]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,[br]which you can drag and drop to write programs.

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This is how even university students learn the basics.[br]

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Under the hood, you are still creating code.

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The concepts you will be learning [br]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 [br]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 [br]where you will run your program.

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

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

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The white space on the right is called the workspace [br]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,[br]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...[br]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:[br]"turn right by 90 degrees".

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When we use the "turn right"-block,[br]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,[br]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[br]by clicking on the arrows next to them