Develop scales using tables. Pupils complete charts to show equivalent scale factors before using the completed tables to determine the sizes of scale drawings. They finish the lesson and demonstrate their understanding by completing a table using their own scales.

Concepts

scale drawings, scale, scale factors, ratios, equivalent ratios, proportional reasoning, proportions

Show More Show Less

Additional Tags

math

Show More Show Less

Instructional Ideas

• Use the assessment as a lead-in to writing linear equations in the form y = mx
• Have class members share their processes for determining solutions to the open-ended tables

Classroom Considerations

• Class should be familiar with scale and equivalent ratios

Pros

• Answer key provides sample solutions to the open-ended item
• Rubric includes the math big ideas addressed in the assessment

Cons

• None

Common Core

6.RP.A.3.a 7.RP.A.2.a 7.G.A.1