I created five different types of pinwheels to explain the concept of rotational symmetry. Rotational symmetry is when a figure is rotated around a central point and the angle of rotation is noted when the object looks the same as the original figure. For example, a square has 90 degree rotational symmetry because it looks that same at 90 degrees, 180 degrees, 270 degrees and at 360 degrees. The order of rotational symmetry of a square is 4 because it looks the same 4 times in one rotation around a central point. Here is the PDF of the pinwheels. https://drive.google.com/file/d/0B7oGIyVDbRGYT1duczNleEM4SUU/edit?usp=sharing Here is the .Studio file of the pinwheels. I would recommend using the thinnest material for the blades and the strongest paper that won't tear easily for the rest of the pinwheel. https://drive.google.com/file/d/0B7oGIyVDbRGYMjAtRWlyZFliT2M/edit?usp=sharing Paper is not the best material to make the axles of these pinwheels....
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