Creating New Scale Drawings Using Ratios and Proportions

This lesson teaches how to create new scale drawings from existing ones using ratios and proportions. It explains the concept of proportions, how to solve them through cross multiplication, and common mistakes to avoid. The lesson also covers using scale drawings to determine actual measurements and how to adjust blueprints for different room sizes. By understanding these concepts, students can accurately create and modify scale drawings.

What is a proportion and how can it be solved?

Explain the significance of the extremes and means in a proportion.

What common mistakes should be avoided when working with proportions?

How do you determine the actual measurements using a scale drawing?

Describe the process of creating a new scale drawing from an existing one.

What steps must be taken to adjust a blueprint for a larger room?

How do you cross multiply to find the new dimensions in a scale drawing?