Dr. Super's Trigram Puzzle
Almost as amazing as the puzzle is its creative packaging. The 9-piece, 1/8" thick plastic puzzle rests snugly in a plastic CD-case, along with a puzzle booklet challenging you to construct 75 different figures. Based on a 30°-60°-90° triangle, the pieces can also be used for geometric exploration. The similar triangles are in three sizes; one large, three medium, five small. This is very similar to the tangram puzzle except there are more pieces and all are the same shape. I found them to be more challenging. Puzzles vary in difficulty and are categorized as dinosaurs & animals, aviation & machines, people, geometric shapes, and the alphabet. For younger children, the outline puzzle pages (available separately) provide a boundary shape for the pieces. Puzzle solutions are included in both the booklet and on the outline sheets.