Calculating Perimeter and Dimensions

This video tutorial covers fourth-grade module three, lesson two, focusing on solving multiplicative comparison word problems using area and perimeter formulas. It includes examples such as a rectangular pool, a poster, and Nathan's bedroom and living room rugs, teaching students to use drawings to organize their thinking and calculate dimensions and perimeters.

What is the main focus of this lesson?

• Solving multiplicative comparison word problems

• Understanding subtraction

• Learning about fractions

• Solving addition problems

What is a multiplicative comparison?

• Comparing numbers by subtraction

• Comparing numbers by addition

• Comparing numbers by division

• Comparing numbers by multiplication

In the pool problem, if the width is 7 feet, what is the length?

• 14 feet

• 21 feet

• 28 feet

• 35 feet

How do you calculate the perimeter of a rectangle?

• Length times width

• 2 times (length times width)

• Length plus width

• 2 times (length plus width)

What is the perimeter of the pool?

• 48 feet

• 42 feet

• 64 feet

• 56 feet

In the poster problem, if the length is 3 inches, what is the width?

• 9 inches

• 6 inches

• 15 inches

• 12 inches

What is the perimeter of the poster?

• 42 inches

• 36 inches

• 30 inches

• 24 inches

Why is it okay to draw the rectangle in different orientations?

• Because it looks better

• Because it is a rule in math

• Because it is easier to understand

• Because multiplication and addition are commutative

What is the area of Nathan's bedroom rug?

• 20 square feet

• 15 square feet

• 25 square feet

• 10 square feet

If the longer side of Nathan's bedroom rug is 5 feet, what is the shorter side?

• 5 feet

• 4 feet

• 3 feet

• 2 feet