Skip to learning content
🐞

Grade 4 · Code & Play

Bug Detective

Test and debug

🎯 Coding challenge

Level 1: Wrong Turn

🐞 Find the wrong block

One instruction turns the robot too soon.

Broken program · Tap a line to edit

Choose a replacement block:

Run and test your program to unlock Next.
You control the blocks. No typed JavaScript is executed. These activities are original practice inspired by Grades 3–5 CS concepts.