Activity 01
Pairs Challenge: Shape Tracer
Pairs select a shape like a triangle or star, then break it into forward, turn, and repeat blocks on screen or tablet. They predict the robot's path, run the code on the robot, measure accuracy with string, and adjust one block at a time. End with pairs swapping codes to test and critique.
Construct a sequence of commands to make a robot move in a specific pattern.
Facilitation TipDuring Pairs Challenge: Shape Tracer, circulate and ask each pair to predict one step their robot will take before running the code.
What to look forProvide students with a printed grid and a starting point. Ask them to write the sequence of commands needed for a robot to draw a square on the grid. Then, ask them to identify one potential error that might cause the robot to draw a rectangle instead.