Understanding Scale Drawings and Measurements

Miss Go's lesson focuses on computing actual lengths from scale drawings. Students learn to identify scale factors and use them to calculate real-world dimensions. The lesson includes three examples: a basketball court, a garden, and a surfboard, each demonstrating different methods of using scale drawings to find actual lengths. The lesson emphasizes understanding scale factors and applying them to solve practical problems.

What is the main focus of today's lesson?

• Understanding scale drawings

• Exploring geometric shapes

• Learning about historical figures

• Studying algebraic equations

In Example 1, what is the scale used for the basketball court drawing?

• 1 inch to 10 feet

• 1 inch to 15 feet

• 1 inch to 20 feet

• 1 inch to 25 feet

How does Vincent determine if the basketball court will fit in the lot?

• By measuring the court directly

• By using a scale drawing and calculations

• By estimating the size visually

• By asking the school administration

What is the actual size of the basketball court in feet?

• 30 feet by 40 feet

• 25 feet by 30 feet

• 15 feet by 20 feet

• 20 feet by 25 feet

In Example 2, what is the scale used for the garden drawing?

• 1 cm to 25 meters

• 1 cm to 20 meters

• 1 cm to 15 meters

• 1 cm to 10 meters

What are the actual dimensions of the garden?

• 100 meters by 200 meters

• 50 meters by 100 meters

• 60 meters by 120 meters

• 80 meters by 160 meters

In Example 3, what is the scale used for the surfboard drawing?

• 1 inch to 30 feet

• 1/2 inch to 38 feet

• 1/2 inch to 38 of a foot

• 1 inch to 38 of a foot

How is the actual length of the surfboard calculated?

• By multiplying the drawing length by 2

• By estimating based on the drawing

• By dividing the drawing length by 2

• By using a unit rate derived from the scale

What is the actual length of the surfboard in feet?

• 5 and 1/3 feet

• 6 and 1/3 feet

• 8 and 1/3 feet

• 7 and 1/3 feet

Why is the calculation in Example 3 different from the others?

• It uses a different unit of measurement

• It involves a non-standard scale

• It is based on a real object

• It requires estimation