Build your computational problem solving skills by writing programs that produce complex outputs.

You'll learn how to use variables to store and update values, as well as how to harness the power of the for loop.

These tools will help you build foundational skills to write more dynamic programs.

Use variables to store important values in a program

Debug programs that use variables incorrectly

Variables

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Writing Programs

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Using Variables

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Multiple Variables

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Setting Variables

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Level Review

Use loops to update variables, creating complex patterns

Updating Variables

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Updating with Expressions

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Variables and Loops

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Geometric Expressions

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Use conditional statements to change a variable's value based on logic

Use logic on different variable types --- numbers and strings

Variables and Logic

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Using Logic

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Variable Logic

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Ordering Logic

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Leverage `for` loops, modular arithmetic and randomness to visualize patterns

Represent colors with numbers using the standard for digital visualizations, including websites and apps

For Loops

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The For Loop

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The Loop Variable

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Expressions in For Loops

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Coloring with Numbers

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Supercharge your programming skills with variables and loops.

Master the fundamentals of writing modular code -- key to building scalable software.

Programming with Variables

Level 1Variables

Level 2Updating Variables

Level 3Variables and Logic

Level 4For Loops

Programming with Functions