Toys of Wood Oxford Wooden Colour Sorting - Brainteaser Puzzle Game - Wooden Brain Teaser for 3 Year olds Suitable for Montessori Learning Fine quality solid wooden board with 12 disks in four bright colours (3 disks of each colour) which are fixed on the board but can slide along the tracks. 18 patterns wooden cards i.e. 18 combinations of the colour disks arrangement. Slide the disks following the disk distribution on the card or any way you like. Instruction is included on the box. Play by one person or more than one player by timing each other in changing a pattern. It is a great game, fun to play and also good to train childrens abilities of observation, critical and strategic thinking, hand and eye coordination. Suitable 3 plus.