Gr. 3 M 4 L 4 Concept Development

Gr. 3 Module 4

Lesson 4

Objective: Relate side lengths with the number of tiles on a side.

Multiple Choice

(Entry Ticket) What are the side lengths of this rectangle?

• 3 and 6

• 4 and 10

• 2 and 6

• 2 and 5

Multiple Choice

Application Problem

Mara uses 15 square-centimeter tiles to make a rectangle. Ashton uses 9 square-centimeter tiles to make a rectangle. Which picture represents this problem?

Multiple Choice

Which image shows an array of 3 by 5 (3 x 5) using square inch tiles?

Multiple Choice

Which picture shows the correct way to arrange these square inch tiles into a rectangle (no gaps or overlaps)?

Lets use an inch ruler to measure the bottom of our rectangle. Notice that you must line up a ruler with the zero tick mark.

Multiple Choice

What is the length of this side

• 4 inches

• 5 inches

• 6 inches

• 3 inches

Now lets use the same ruler to measure the shorter side of our rectangle.

Multiple Choice

What is the length of this side?

• 3 inches

• 2 inches

• 1 inch

• 4 inches

Open Ended

What is the relationship between the number of tiles on a side and the side length of the rectangle?

They are the same.

Open Ended

What do you notice about the lengths of the opposite sides of the rectangles?

They are equal.

Multiple Choice

(Exit Ticket to problem set) What are the side lengths of this rectangle? (Careful, the answers have been rearranged)

• 2 and 6

• 2 and 5

• 3 and 6

• 4 and 10