Thinking & reasoning. Problem solving. Strategy planning. Perseverance & concentration An awesome game to develop spatial perception in the child aged 6 years and up. A Tangram set of seven shapes forms a perfect square and consists of a square, five triangles, and a parallelogram. The problem and solution cards are designed to cater for different levels of development of spatial perception. Encourages thinking and reasoning. Problem Solving. Strategy Planning. Perseverance and Concentration.