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Direct linkPopelka, Susan R. – Mathematics Teacher, 2011
Tiny prisms in reflective road signs and safety vests have interesting geometrical properties that can be discussed at any level of high school mathematics. At the beginning of the school year, the author teaches a unit on these reflective materials in her precalculus class so that students can review and strengthen their geometry and trigonometry…
Descriptors: Safety, Geometry, Calculus, Mathematics Instruction
