Magformers My First 30 SetThe pieces are the same size as the standard pieces, so the My First sets are compatible with every other Magformers Set. The difference is in the colour scheme. My First pieces come in a vivid crayon (solid) colour scheme which are more attractive for younger children than the transparentcolour pieces that are found in the standard sets. The My First 30 Set contains 12 triangles and 18 squares, as well as a beautifully printed book teaching children