Have students practice their math fact fluency with this project based enrichment activity. 2 versions are available, addition and subtraction. Students first practice all of the math facts prior to designing their game. They then design their game, select their favorite model and reproduce it on the cards. They use their math facts to complete the cards and be able to play the game. This memory game will require students to know and build their fluency in order to successfully make a match while using their creativity to design their own game.