Ratios and Reciprocals in Mathematics

This lesson covers the concept of ratios, starting with an introduction to reciprocal multiplication. Students engage in activities using Snap Cubes to visually represent ratios and describe them. The lesson progresses to exploring paint mixing ratios and matching diagrams with sentences for spaghetti sauce recipes. The session concludes with a review of homework and key concepts, reinforcing the understanding of ratios and their applications.

What is the reciprocal of 4?

• 2

• 1/2

• 4

• 1/4

If you have 5 red Snap Cubes and 2 blue Snap Cubes, what is the ratio of red to blue?

• 1:2

• 2:5

• 5:2

• 2:1

In the paint mixing activity, what is the correct ratio of white to blue paint?

• 3:1

• 6:2

• 1:3

• 2:6

Which statement correctly describes the ratio of flour to water in Jada's mixture?

• 1:4

• 4:1

• 2:8

• 8:2

In the recipe activity, what shape represents tomato sauce?

• Circle

• Square

• Triangle

• Rectangle

How many cups of pretzels are there for every cup of raisins in the snack mix?

• 2

• 4

• 1

• 3

What is the area of a square with a side length of 3 inches?

• 15 square inches

• 6 square inches

• 9 square inches

• 12 square inches

If the area of a square is 36 square centimeters, what is the length of each side?

• 4 cm

• 7 cm

• 6 cm

• 5 cm

What is the result of multiplying 8 by its reciprocal?

• 1

• 0

• 64

• 8

Which of the following is a correct statement about the ratio of green to white paint?

• 2:4

• 4:2

• 1:2

• 2:1