82 pieces Each set contains Squares & Triangles in two colors Easy to Master Connections Learning Comes With Play - They won’t know it at the time, but you’ll be smiling as you see them learn and develop while playing with That Hinge Toy. It might start with basic shapes with repeating patterns or see the mental connections forming as a determined mind explores using trial and error creating more complex forms. Endless Building and Rebuilding That Hinge Toy is a new easy to learn building system made up of two shapes, square and Triangles. The edges of each shape connect to any other pieces edges to create a hinge-like link. Use these pieces to create models from the imagination such as animals or vehicles that have a playful movement to the finished creation. Play with colors, shapes and pattern making to create amazing geometric designs. That hinge toy lets the builders curiosity run wild and leave the desire to keep building, testing and creating hour after hour.