These puzzle pieces are great for cooperative learning and you can use them for anything! Simply print as many pairs as needed, cut and laminate them. Have students create the matches by writing on the laminated pieces with a dry or wet erase marker. Great for vocabulary! One piece has the vocabulary term and the other has the definition. Great for math! Recently, my class used these puzzle pieces with multiplication. Students worked together to create a multiplication array on one piece and a matching multiplication problem on the other. They circulated around the room trading cards to mix them up. When asked, they had to find their match. Since all pieces match, students have to justify why they match one another. Great activity and the possibilities of how you can use these puzzle pieces are endless!