Bug Hunt, Debugging for Kids

Every program has bugs sometimes. Learn to read code step by step, spot the mistake, and fix it just like a real programmer.

Spot the Bug!

Read each step. Find the wrong card highlighted in red.

Bug found The robot turned the wrong way at step 3. It should turn right, not left.

⬆️Forward

↺Turn Left

↻Turn Right

★Goal

SStart

Debugging Basics

What Is a Bug?

A bug is a mistake in a program that causes it to do the wrong thing. The word "bug" comes from 1947, when engineers found an actual moth stuck in a computer!

Bugs can be small (one wrong step) or large (many things working together the wrong way). Finding them is a skill called debugging.

How to Debug

Good debuggers follow a simple method

Read each step of the program one at a time
Imagine or trace what happens at each step
Find where the result changes from what was expected
Fix that step and test again

Types of Bugs

Wrong command TurnLeft when TurnRight was needed
Extra step one too many commands in the sequence
Missing step a needed command was left out
Wrong order two correct steps are in the wrong sequence

In this tool, every bug is a wrong command at a specific step.

Real Programmers Debug Too

Professional software engineers spend much of their time finding and fixing bugs. It is not a sign of failure. It is a core part of programming.

Debugging teaches careful thinking, patience, and the habit of testing ideas. These skills help in math, science, and everyday problem solving too.

TopicsAlgorithms Computer Science Robotics Process Data Analysis

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