Grade 5 · Technology · Lesson 27

Variables & Debugging

A variable is a labeled box inside a program. It holds a value — like a score, a name, or how many lives are left — and that value can change as the program runs. A constant is also a labeled box, but its value never changes. Knowing the difference helps you write clearer code and find bugs faster.

What this lesson teaches

1Define a variable as a labeled box that stores a value that can change
2Tell variables apart from constants
3Read and update a variable inside a simple program
4Find common bugs and apply a clear fix

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