Download Part to Part

What does it mean when a recipe
uses a ratio like “2 eggs for
every 3 cups of flour”?
In this lesson you will learn to
visualize a part-to-part ratio using
pictures.
A Common
Let’s
Review Mistake
Thinking that a ratio describes just one
situation
Example: 2 eggs for every 3 cups of flour
CoreReview
Lesson
Let’s
Ratios show how 2 (or more) quantities are
related.
CoreReview
Lesson
Let’s
For example: 2 eggs for every 3 cups of flour
CoreReview
Lesson
Let’s
The ratio of eggs to flour is
2 to 3
2:3
2
3
In this lesson you have learned to
visualize a part-to-part ratio using
pictures.
Guided
Practice
Let’s
Review
At a school, the ratio of boys to girls is 4 to 3. Draw two
different pictures of this ratio.
Extension
Let’s
ReviewActivities
A recipe for lemonade says that the ratio of cups of
lemon juice to cups of sugar to cups of water is
1:2:5. Draw two different pictures of this ratio.
Extension
Let’s
ReviewActivities
At School A, the ratio of boys to girls is 3:2. Draw
two pictures of this ratio.
At School B, the ratio of boys to girls is 2:3. Draw
two pictures of this ratio.
Would you rather go to School A or School B?
Why?
Extension
Let’s
ReviewActivities
The pancake recipe says that you should make 4
pancakes for every 1 person. Draw two different
pictures of this ratio.
Quick
Quiz
Let’s
Review
To make yummy fruit punch, you should use
1 cup of grape juice for every 4 cups of
apple juice. Draw two different pictures of
this ratio.
When you set the table for a fancy dinner,
you should use 3 forks for every 2 spoons.
Draw two different pictures of this ratio.