Description: Material: Wood Color: As pictures show Constructive triangles gives the children an opportunity to experience plane geometry by manipulating or forming triangles Teach multiple math fractions, addition, subtractions etc Nice educational tool for home or classroom Help children recognize the color and develop practical and creative ability Good for cultivate kids intelligence development, sensory interactive Size Chart: Size(L x W): Approx. 13.7 x 13.7cm/ 5.39 x 5.39inch Package Includes: 1 Set of Montessori Triangle Toy Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size