Get the ball rolling on teaching children critical thinking skills! This magnet game is a fantastic teacher resource for helping students develop their engineering talents as well as problem solving. The design combinations are endless, and this game is appropriate for all elementary school grades when you manipulate pieces to create even more challenging levels. Includes 14 magnetic foam pieces, 4 marbles and 10 activity cards. Plastic. (28 pcs. per unit) Longest pc., 10" x 2".