Conic Sections
Educomp Smartclass Videos:Conic SectionsSee how the parabola, circle, ellipse and hyperbola are formed when a double napped cone is intersected by a p...
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Permutations and Combinations
Educomp Smartclass Videos:Permutations and CombinationsAn introduction to counting the permutation and combination of objects .免費玩Permutations and Com...
Shadows
Educomp Smartclass Videos: ShadowsLearn all about shadows. See how the shadow of an object is formed and why we can not rely on the shadow of an objec...