The next step is the invention, which is begin. 1. determine the angle that you want to use in the experiment. 2. wipe and clean milk boxes. 3. use the circle draw lessons paper. 4. cut down on paper and then the milk box system. 5. use a pen to draw a circle in the milk, then cut by Roy, defined. 6. cut from the edge to the center point. 7. fold the paper cutting, overlapping by angle and mark. 8. wipe out the center hole in the Middle, and then be able to insert the power cable. 9. fold the paper cutting, overlapping the marked points and glue stick elephant.
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