This is a computer-based activity through the website Desmos that allows students to practice their understanding of rigid transformations. Students get to play the game Tetris, using transformation notation to move the pieces. Once students have figured out how to move the piece, they enter the notation and let it play. If they are correct, the piece will fill in the gap. If students enter the wrong transformation, they get to keep trying until they get it into the right position.

Rigid transformations are a fundamental part of video game design. This is a fun way for students to see behind the curtain, to have a sense of what computer programs are doing when we play this classic arcade game.

The questions are well designed and the activity is free. If your students have access to computers, this is a nice activity they could do either in class, or at home. It works especially well with the Rigid Transformation: Shapes on a Plane student materials.