Ever wonder how helicopters work? Gather a piece of paper, a ruler and a pair of scissors. Take the ruler and draw 3 lines of 10cms on a sheet of paper. Then place the ruler in the middle and draw 2 lines of 14cms in length. Then cut the lines with the scissors and fold the slides in the opposite direction. Get one paper clip and put it on the tail end of the helicopter. The flight of the helicopter depends upon the size of the wings. It will help you to learn the dynamics of a helicopter.
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