Sportime Giant Puzzle helps to co-operate with teammates to guide the puzzle assembly will help your students work on problem solving cooperation teamwork verbal skills and trust. Collecting the 12-piece puzzle makes easy except only one person handles the puzzle pieces and that person is blindfolded. It is made up of a high-quality 1/2 in. thick phthalate-free EVA foam the 12 piece puzzle measures 42 x 56 in. The pieces contain two different shape cut-outs with two different sizes of each which just adds to the challenge. This activity can be played with as few as 4 participants but works best for more than 20 participants 10 participants on each team. The detailed activity guide contains hints for one-team play two-team play and relay races so it also keeps students quite active. This puzzle was developed by a physical educator for different ages from elementary school through high school.