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Students will make connections between the Cartesian graphs of trig functions and Polar graphs involving cardioids and limacons (with and without a loop). https://education.ti.com/en/activity/detail/have-a-heart###-or-a-snail
Students discover properties of an ellipse, such as the set of all points such that the sum of the distances from these points to two fixed points is constant. https://education.ti.com/en/activity/detail/properties-of-an-ellipse
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