Grimm's Shapes and ColoursCompatible with all Grimm's 4x4 scale sets. Seven colours and five different geometric forms offer a wide range of colour, coordination and building combinations. Children experience and discover geometric properties through play. Ideal for Kindergarten: For example, each child or group chooses a colour and everyone builds a house until a small colourful city of houses is created. By building and playing with the blocks, children develop fine motor