Python Error Handling Lesson – Try Except & Debugging Activities (Computer Science)

This resource introduces students to error handling and debugging in Python programming. Students learn how programming errors occur and how developers prevent programs from crashing using try and except structures.

The lesson explores common programming errors, debugging strategies and how Python handles runtime exceptions. Students practice identifying mistakes in code and learn techniques for writing more reliable programs.

This ready-to-teach lesson 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:

• Types of programming errors
• Syntax errors and runtime errors
• Introduction to debugging
• Try and Except statements
• Handling runtime exceptions
• Writing safer Python programs

Perfect for:

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

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