Mindware Keva Structures - 200 piece plank setKeva Planks are for everyone each piece is exactly the same size and shape. No glue or connectors required! Simply stack the precision cut, solid pine KEVA planks to create buildings, monuments and geometric forms. Its the ideal activity to help kids gain an understanding of balance and proportion, as well as an interest in architecture, building and design. KEVA Structures 200 plank kit comes with 200 KEVA planks for free form building and a 24 page,