A fabulous workshop for discoverers of colors and shapes- the optical effects are simply fascinating! There are many things to discover: exciting patterns of colors and shapes and impressive motion effects. Even everyday surroundings look very different with the optical blocks. 10 pieces of beech wood: mirror block, faceted block, color spinning tops, big color blender, jigging block, kaleidoscope, 2 effect blocks, moire block, prism with 4 picture cards and a cinema block with four animal tiles.