See Through Rainbow Blocks 24 pcSet of 24 wooden blocks with transparent, coloured acrylic inserts Made from durable plywood 6 different shapes squares, rectangles, semi circles and right angled triangles 4 transparent colours pink, blue, green, yellow Whether building with the Rainbow Blocks or looking through them,children engage their inherent creative and inquiry skills. During the construction and block selection process, children are exploring simple mathematical concepts of