Toys of Wood Oxford Wooden pentominoes Puzzle Mind Games for Children &ndash; Tangram Wooden Toys for 6 Years Grown ups brainteaser Contains: 1 game board, 12 shape blocks, 1 slider and puzzle combination list (over 600). There are total over 1000 possible combinations. The aim of the game is to make rectangles of varying sizes. They can begin with just 3 pieces or use 4, 5, 6, each with many combination of shapes, right up to using all 12. The more pieces used, the harder the game becomes. Great mathematic challenge puzzle. Suitable for 6 years plus and grown-ups. Ideal to help children to understand the basic concepts of geometry; improve manual dexterity and spatial awareness; develop strong problem solving and critical thinking skills.