Grade 6 · Technology · Lesson 27

Variables, lists and debugging

Code is a recipe a computer follows step by step. To follow your recipe, the computer needs to remember things — a score, a name, a list of high scores. We give those memories a name so we can find them again. That name is called a variable, and a variable that holds many values in order is called a list.

What this lesson teaches

1Define a variable as a labeled box that holds a single value
2Describe a list as one name that stores several values in order
3Trace how a value changes through a short sequence of code lines
4Spot and fix common bugs by reading the code one line at a time

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