Download this cooperative barrier game to teach your students vocabulary and communication skills using the structure Match Mine. Each partner receives a game board with protractors and angle game pieces to place on the game board. Partners sit on opposite sides of a barrier so they can’t see each other’s game board or game pieces. Partner A arranges the angle pieces on each protractor of the game board. Then, using only verbal communication, Partner A describes to Partner B which angle goes on each protractor so they can make a match. For example, “Put the 90-degree angle on the left protractor in the second row.” When they think they have a match, they compare arrangements and celebrate. This set teaches common angle concepts and vocabulary such as: degrees, right angle, acute angle, etc. Match Mine is a fun and cooperative way to develop language, communication, cooperation, and perspective-taking skills.