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This geometry lesson from Illuminations aids students in the transition from using twocolumn proofs to paragraphstyle proofs. The material helps students to understand proofs as chains of statements, and learn to...
This geometry lesson from Illuminations involves using sidewalk chalk and rope to illustrate the locus definitions of ellipses and parabolas. Students will define conic sections, apply locus definitions and collaborate...
This geometry lesson from Illuminations presents a realworld problem for students to solve with mathematical functions. The material involves constructing the circumcenter and incenter of a triangle. Learners will gain...
This lesson from Illuminations teaches students the features of sine and cosine graphs. Students use uncooked spaghetti to demonstrate the properties of the unit circle, which they will then represent with graphs. It is...
This lesson from Illuminations uses growth charts for girls and boys to examine rates of change. The material uses slope to approximate the rate of change in height. Students will learn how to translate this data into a...

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