Proportional Reasoning in Scale Drawings

Presentation

•

Mathematics

•

6th - 8th Grade

•

Hard

Joseph Anderson

FREE Resource

19 Slides • 9 Questions

Apply Proportional Reasoning to Solve Problems

Good Afternoon! Time to Warm Up!

Work on iXL "Recommended Skills" or "enter diagnostic arena" on iXL

Apply Proportional Reasoning to Solve Problems

Fill in the Blanks

How much of each ingredient do I need to make a single serving? (hint: you can use unit rates and/or proportions)

Type answer...

Cup(s) of Cranberry Juice

Fill in the Blanks

How much of each ingredient do I need to make a single serving? (hint: you can use unit rates and/or proportions)

1 Cup of Cranberry Juice

Type answer...

Cup(s) of Orange Juice

Fill in the Blanks

How much of each ingredient do I need to make a single serving? (hint: you can use unit rates and/or proportions)

1 Cups of Cranberry Juice

\frac{1}{2}

Cup of Orange Juice

Type answer...

Cup(s) of Ginger Ale

Multiple Choice

There are 20 cups of cranberry juice for every 10 cups of orange juice. What is unit rate for cups of cranberry juice per cups of orange juice?

Multiple Choice

Which graph would represent the proportional relationship between the cranberry juice and the orange juice?

There are 20 cups of cranberry juice per 10 cups of orange juice. (cranberry juice is on y-axis and orange on x-axis)

Multiple Choice

The original recipe states that 5 cups of ginger ale are needed to make 20 servings of punch. Which proportion can be used to find the number of cups of ginger ale needed for 10 servings of punch.

$\frac{20}{5}=\frac{g}{10}$

$\frac{5}{20\ }\ =\ \frac{10}{g}$

$\frac{5}{20}\ =\ \frac{g}{10}$

Fill in the Blanks

The original recipe states that 5 cups of ginger ale are needed to make 20 servings of punch. Solve the proportion below that can be used to find the number of cups of ginger ale needed for 10 servings.
$\frac{5}{20}=\ \frac{g}{10}$

g =

Type answer...

Open Ended

Write a recipe for the amount of ingredients needed for 10 servings of Orange-berry Punch. List the amount of cranberry juice, ginger ale, and orange juice needed.

“Orange-berry Punch Recipe”

Serving Size: 20

20 Cups of Cranberry Juice

10 Cups of Orange Juice

5 cups of Ginger Ale

Type response here

Answer

Cranberry Juice: 10 cups

Orange Juice: 5 cups

Ginger Ale: 2.5 cups

Multiple Choice

If the desks are 2 inches apart on my scale drawing, how far apart are the desks in real life if 1 inch drawing: 30 inches actual?

Apply Proportional Reasoning to Solve Problems

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