Proving Slope Criteria for Parallel & Perpendicular Lines

This Proving Slope Criteria for Parallel & Perpendicular Lines lesson plan also includes:

This lesson launches with learners graphing the fourth vertex of a given rectangle, and finding the length and slope of one of its sides; and ends with learners writing a summary sheet for parallel and perpendicular lines. In between, collaborative groups rotate through four stations containing investigations using patty paper, graph paper, similar right triangles, distance formula, calculators, and geometers’ sketch pad. The suggested homework is to have learners practice application problems that require finding the equation of a line parallel or perpendicular to a given line that passes through a given point.

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CCSS: Designed
Pros

  • The stations instruction document covers all stations completely and is superbly written including the Geometers' Sketchpad instructions for learners
Cons

  • None