Explore the world of geometry with our Montessori Wooden Material Toy Constructive Triangles set! This set includes 5 boxes of different triangles, perfect for children ages 0-3y, 3-6y, 6-12y, and 14+. Made with high quality metal and approved for CE certification, our triangles are both educational and safe. Watch as your child creates and manipulates triangles to discover the principles of plane geometry. Warning: keep away from fire.