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CS Unplugged activity

Robot grid 1: moves and turns

About 30 minutesSolo, then compare with a partnerPencil

On the AP CSP exam, a robot on a grid gets used to test whether you can read code exactly the way a computer does. Nothing here needs a computer. You just need to keep track of where the robot is and which way it’s facing. This first set uses only three commands: move, turn left, and turn right.

Work each question on paper first. Trace the robot’s moves with your pencil right on the grid, one line of code at a time.

CC BY-NC-SA 4.0.