Looking for a fun, low-prep way to teach your students about debugging, algorithms, and computational thinking? This unplugged coding activity set is the perfect way to help students practice finding and fixing mistakes in code without needing a device!

Created by an elementary computer science teacher, these print-and-go worksheets challenge students to analyze step-by-step sequences, identify errors (bugs), and correct them so the program works properly. With increasing levels of difficulty, this set is flexible for a variety of learners and works well for independent practice, small groups, centers, or computer lab rotations.

What’s Included:

• 15 printable debugging worksheets
• 3 differentiated levels (beginner, intermediate, challenging)
• Student response sections to identify and fix bugs
• Clear, simple directions for each activity
• Answer key for easy grading and checking

Skills & Concepts Covered:

• Computational Thinking
• Debugging (finding and fixing errors)
• Algorithm Design
• Sequencing
• Problem Solving & Logical Reasoning

This set is ideal for grades 2–5, but can easily be adapted for younger learners with support or used as enrichment for students who need an extra challenge. Whether students are just being introduced to debugging or are building confidence in analyzing code, these engaging activities provide meaningful, unplugged coding practice your class will enjoy.

Don’t forget to follow my shop and leave a review to earn TPT credits, which supports creations like this. Every review helps fellow teachers and gives you points toward future purchases!