This is an engaging and collaborative group activity for students to practice multiplying matrices. There are a total of 28 problems including matrices with dimensions 1x2, 2x1, 2x2, 2x3, 3x1, 3x2, 3x3, 2x4, 4x2. All the problems are possible. Calculator use is optional. Students can be organized in groups of 2, 3 or 4. Each member of a group is given not more than 7 problems to work out. The activity can be used to have groups compete with each other. Students of each group will get points for