Lesson Plan: Scale Drawings and Models Mathematics • 7th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to identify a scale drawing, calculate the scale factor and the dimensions of both the scaled model and the actual object, and apply this to real-world problems.

Objectives

Students will be able to

  • understand the relationship between the drawing scale, the actual length, and the drawing length,
  • calculate the drawing scale, the actual length, and the drawing length,
  • define minimization and enlargement and their relation with the drawing scale,
  • decide whether a drawing scale represents a minimization or an enlargement.

Prerequisites

Students should already be familiar with

  • ratio notation,
  • ratio as fractions,
  • proportion,
  • unit conversion.

Exclusions

Students will not cover

  • scales other than 1𝑥 and 𝑥1.

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