Programming

Variables: Storing, Naming and Computing with Data

Understand a variable as a named box that holds a value, then make it do something — computing with it, predicting its values, and building a calculator bot.

A Box With a NameBy the end you can name a variable well, fill it three ways, predict what it will hold, and describe a variable in an exam answer.
Mission ControlBy the end you have planned, built and launched a mission program, and you can trace what it does line by line.