Python Lesson 3: Variables (GCSE-Ready) | Store Data & Change It Correctly

Variables are one of the most important ideas in programming, and one of the easiest to misunderstand.
In this lesson, students learn what a variable actually is, how Python stores values, and how values can change during a program. This lesson directly targets common GCSE errors.

Designed for:
GCSE Computer Science students
Teachers delivering Python step-by-step
Cover lessons, homework, or flipped learning
Anyone who wants to learn Python

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In this lesson, students will:
Understand what a variable is (in student-friendly language)
Learn that = means assign / store, not “equals”
Update variables using their current value
Avoid common mistakes with overwriting and data type