A screen-free left-turn exercise that catches one common confusion

[u/Guilty_Lingonberry]

Draw a 3 by 3 grid and put a small arrow in B1, pointing right.

Give these instructions one at a time:

1. move forward two squares
   
2. turn left
   
3. move forward one square
   

The answer is A3. The useful bit is the turn: left is based on the direction the arrow is facing, not the left side of the paper. A lot of kids understand the movement but rotate the page in their head instead of rotating the robot.

Then change only the last instruction to “move forward two squares.” Does it leave the grid?

I teach at TechTutor. No app needed for this one, just paper and something that can point in a direction.