Common Core Math - HS Geometry

Lesson Plan

Find point partitioning segment

Goals / Objectives

Explain what a directed line segment is and how direction determines the order of the endpoints in partition problems

Derive and apply the section formula to find the point that divides a directed line segment in a given ratio m:n

Recognize the midpoint formula as the special case of the section formula when the ratio is 1:1

Solve problems that require finding a point a given fraction of the way from one endpoint to another

Connect the partition formula to proportional reasoning and similarity, explaining why the formula works

Standards

HSG.GPE.B.6

HSG.GPE.B.6: Find the point on a directed line segment between two given points that partitions the segment in a given ratio.

Academic Vocabulary

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Accommodations

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Anticipatory Set / Bell Work

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Check for Understanding

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Guided Practice

Independent Practice