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This interdisciplinary math lesson from Illuminations may be used in conjunction with geography education. Students will consider strategies for figuring out the distance to the horizon from various heights. A formula...
This geometry lesson from Illuminations uses the model of the orbits of Mars and Earth relative to the sun to illustrate parametric equations. As an interdisciplinary learning activity, the material may be used in...
This geometry lesson from Illuminations asks students to draw two line segments through a point on the diagonal of a parallelogram and parallel to the sides. Students will examine a geometric shape, analyze the patterns...
This math unit from Illuminations asks students to inscribe and circumscribe regular polygons. They will then analyze the area of the polygons, using either an applet or a graphing calculator. The unit includes two...
This lesson from Illuminations asks students to measure the diameter and circumference of various circular objects, plot the measurements on a graph, and relate the slope of the line to ?, the ratio of circumference to ...

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