1Frame geometry makes learning easier and clearer of thinking. Geometry teaching can be built arbitrarily 2Used for understanding geometry, mathematics education, bring simple learning, happy growth, wisdom education, thinking expansion 3The product come with rounded corners and smooth edges, care for children's hands 4Straw constructor building blocks adopt socket design, stable and not easy to deform, freely assembled 5Goodquality plastic material, possess strong corrosion resistance, durable, waterproof, and light weight
