Project math subjects overlap caused by the volume of a cone shaped nest is a project of high school classes, school loyalty, Chaiyaphum, Chumphon. Intended to apply the knowledge from the contents area of the cone-cutting sector volume image overlap caused by the cone stack to provide fast and accurate calculations.The study, which is due to bring the cone 2 figure are the same size as its volume. The areas of overlap caused by the cone shaped nest Geometer's Sketchpad.In the creation. Therefore, knowledge of the subject, said that the Math Department cut the cone. Bring the image workspace overlap caused by the funnel. Can cause the image to calculate the volume of ideas overlap caused by the cone nested properly and fast. To make participants aware that various doubts, even though it is small, but doubts it can do, it is easy and they can see how the principle of mathematics is not too far a.
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