What Is a Program?

A set of instructions that a computer executes.

Do this: Read the concept below, then try the quiz or activity.

Lesson 1 of 20
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Concept

Programs read input, transform it, and produce output. Think in steps: state, operations, and flow. Start with small tasks, test often, and iterate.

Try it

Describe a real-world process (making tea) as 5–7 steps a computer could follow.

Concept Check

Which best describes a program?

Mental Model
Computers do exactly what you say, not what you mean.