Unlock the secrets of bridge building with Polydron Bridges. These sets give budding Civil Engineers and Designers a chance to build and test several types of bridge designs, including some of the most recognisable, world-famous bridge constructions. Twelve comprehensive work cards and lesson plans provide step-by-step instructions to piece together truss, suspension, cantilever, drawbridge, cable stay, swing and bascule bridges. The set will encourage and challenge children to go beyond the set shapes and to experiment with their own creations. Build all of the eight bridges, at the same time using the 12 work cards included in this pack. You can build the following bridges: truss, suspension, cantilever, drawbridge, cable stay, swing and bascule. This 322 piece set contains:. 70 Frameworks Squares,. 68 Frameworks Equilateral triangles,. 44 Squares,. 14 Frameworks Rectangles,. 56 Frameworks Right Angle Triangles,. 4 Frameworks Isosceles Triangles,. 4 Frameworks Root 2 Triangles,. 8 Struts 330mm, 2 Struts 110mm, 3 Struts 80mm,. 4 Pulleys, 2 Handles,. 4 Square Holes,. 2 Rectangles with Holes,. 2 Hinges,. 8 Double Squares,. 6 Eyelets,. 15 Plinths,. 2 Laces with ends,. 4 Laces,. 2 Suspension Laces,. Work cards, book and a Gratnells tray. *Warning: Choking Hazard due to small parts and strangulation hazard due to long cords*. Age 9+. Each square piece measures 7.5 x 7.5cm.
