MORE WAYS TO BUILD: Compare to Lincoln logs legos and building blocks. These planks help teach how to manipulate physics and appear to defy gravity. A timeless product Constructables! grow with the user as building skills develop SIMPLE DESIGN: Great kit for young STEM students little engineers and future architects. The unpainted pieces are free for you to design as your own Manufacturered by Imagination Generation. DEVELOPMENT BENEFITS: Teaches physics balance and spatial awareness. Encourages problem solving hand-eye coordination and fine motor skills IG PROMISE: Our planks are cut from all-natural unprocessed and unpainted pine wood imported from New Zealand and sanded smooth for safe play BOARD? Tease your brain while having fun with IG's Constructables! The Ingeniously Simple Building Toy with a whopping 150 pieces! Each plank is 4.65" x .95" x .25"