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Project title Bridge Building BasicsFeatured science projectScience project video
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Bridges must be strong and bear a great deal of weight, or force, to keep us safe as we travel across them. Basic geometric shapes are used in bridge design - namely, squares, triangles, rectangles and half circles. If we use two different geometric shapes, a square and a triangle, to create the structure for a bridge's supports, which one would be able to bear more weight? This science project demonstrates a basic concept of engineering to help us understand why certain shapes are used, and which shapes withstand the most force. 

Instructions preview
1. Lay down two (2) sheets of waxed paper about 18 inches long. 2. Begin by making 18 triangles. You will need 54 toothpicks. Take three (3) toothpicks at a time (do not use any toothpicks that are splintered or broken) and place them on the waxed paper. Put a drop of glue on both ends of one (1) toothpick. *Some glue will drip off the toothpick onto the waxed paper: that's OK, as the glue will only stick to the toothpick and not the waxed paper. Place two more toothpicks in the glue at the tip of the .....
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