How Do You Build A Miniature Geodesic Dome?
The triangle is one of the most stable shapes in nature. A geodesic dome is formed entirely of triangles, making it a very stable structure even when it is constructed of light-weight materials such as drinking straws. Make a dome of drinking straws and see how much weight it will support. Compare it to a drinking-straw cube the same size. Cut 35 blue straws 12 cm long. Cut 30 red straws 11 cm long. Tape 10 blue straws together end-to-end to from a ring. This is the base of the dome. Tape one end of a blue straw to each end of one of the straws in the base ring. Bring the other ends of these straws together above the base straw. Tape these ends together to form a triangle. Tape one end of a red straw to each end of the next straw in the base ring. Tape the ends of these straws together to make another triangle. Use blue straws to make a triangle over the next base straw. Alternate red- and blue-straw triangles all the way around the ring. This will form ten triangles. Tape a red straw
