Python Functions and Modules Lesson – Coding Activities, Slides & Worksheet

This resource introduces students to functions and modules in Python programming. Students learn how programmers organize code into reusable blocks using functions and how modules help structure larger programs.

The lesson focuses on defining functions, calling functions, passing parameters and understanding how modular programming improves readability and efficiency in software development.

This ready-to-teach resource follows a structured, no-prep format designed for beginner programming classes.

What’s included:

• Lesson Plan (4 structured lessons)
• Teaching Slides
• Student Worksheet
• Summary Notes
• Answer Key
• Teacher Handbook with teaching guidance

Topics covered:

• Introduction to functions
• Defining and calling functions in Python
• Function parameters and return values
• Code reuse and modular programming
• Introduction to Python modules

Perfect for:

• High school computer science classes
• Beginner Python programming courses
• Coding clubs
• STEM lessons

Duration: 4 × 40 minute lessons
Level: Beginner Python Programming