CW 5.2 Proportion

CW 5.2 Proportion

Lesson objective:

● use equivalent ratios to determine whether two ratios form a proportion.
● use the Cross Products Property to determine whether two ratios form a proportion.

Key Ideas

Example

1

Tell whether the ratios form a proportion.

1

Tell whether the ratios form a proportion.

1

Tell whether the ratios form a proportion.

1

Tell whether the ratios form a proportion.

Example

1

Tell whether x and y are proportional

1

Tell whether x and y are proportional

1

Tell whether x and y are proportional

Example

1

Tell whether the two rates form a proportion.

7 inches in 9 hours; 42 inches in 54 hours

1

Tell whether the two rates form a proportion.
12 players from 21 teams; 15 players from 24 teams

1

Tell whether the two rates form a proportion.
440 calories in 4 servings; 300 calories in 3 servings

1

Tell whether the two rates form a proportion.
120 units made in 5 days; 88 units made in 4 days

1

For the ratios to be in proportion, what number should the 88 actually be?

120 units made in 5 days; 88 units made in 4 days

1

Write an example of 2 ratios that are equal. Explain how you know they are equal.

write your fraction with a /
e.g. 2/3 for 2 thirds

Reflect on your progress

0

Give yourself a rating on the first lesson objective

I can use equivalent ratios (simplify them) to determine whether two ratios form a proportion.

0

CW 5.2 Proportion

Tell whether the ratios form a proportion.

Tell whether the ratios form a proportion.

Tell whether the ratios form a proportion.

Tell whether the ratios form a proportion.

Tell whether x and y are proportional

Tell whether x and y are proportional

Tell whether x and y are proportional

Tell whether the two rates form a proportion.7 inches in 9 hours; 42 inches in 54 hours

Tell whether the two rates form a proportion.12 players from 21 teams; 15 players from 24 teams

Tell whether the two rates form a proportion.440 calories in 4 servings; 300 calories in 3 servings

Tell whether the two rates form a proportion.120 units made in 5 days; 88 units made in 4 days

For the ratios to be in proportion, what number should the 88 actually be? 120 units made in 5 days; 88 units made in 4 days

Write an example of 2 ratios that are equal. Explain how you know they are equal.write your fraction with a / e.g. 2/3 for 2 thirds

Reflect on your progress

Give yourself a rating on the first lesson objectiveI can use equivalent ratios (simplify them) to determine whether two ratios form a proportion.

Give yourself a rating on the second lesson objectiveI can use the Cross Products Property to determine whether two ratios form a proportion.

Tell whether the two rates form a proportion.

7 inches in 9 hours; 42 inches in 54 hours

Tell whether the two rates form a proportion.
12 players from 21 teams; 15 players from 24 teams

Tell whether the two rates form a proportion.
440 calories in 4 servings; 300 calories in 3 servings

Tell whether the two rates form a proportion.
120 units made in 5 days; 88 units made in 4 days

For the ratios to be in proportion, what number should the 88 actually be?

120 units made in 5 days; 88 units made in 4 days

Write an example of 2 ratios that are equal. Explain how you know they are equal.

write your fraction with a /
e.g. 2/3 for 2 thirds

Give yourself a rating on the first lesson objective

I can use equivalent ratios (simplify them) to determine whether two ratios form a proportion.

Give yourself a rating on the second lesson objective

I can use the Cross Products Property to determine whether two ratios form a proportion.