1) The document discusses ratios and uses Lucky Charms cereal as an example. It states there are 287 marshmallow pieces and 2,583 oat pieces in one box of Lucky Charms. 2) Ratios are introduced as a comparison of two quantities that can be written as a fraction, using "to", or with a colon. The ratio of marshmallows to oats in one box is given as an example. 3) Students practice writing ratios to compare amounts in different scenarios, such as numbers of lions to birds or people to pizzas. They also work on simplifying ratios by writing them in simplest form.

1. 1
Intro to Ratios

2. Warm Up
Agenda
2
Write each fraction in simplest form.
3) Which fraction above has the greatest value?
5/9 is bigger than 3/10 because 5/9 is
about 0.55 and 3/10 = 0.3

3. Lucky Charms Launch
Agenda
3
Turn and Talk:
1. Have you ever had Lucky Charms cereal?
2. Are there more marshmallows or oat pieces in a
box of Lucky Charms?
3. Predict how many marshmallows pieces are 1 box.
4. Predict how many oat pieces are in 1 box.
Hint:
Hint: There are almost
2,500 marshmallows and oats
altogether in 1 box.

4. Lucky Charms Continued
4
Agenda
 There are 287 marshmallow pieces and 2,583 Oat Pieces
in 1 box of Lucky Charms.
We can write this real-world situation as a ratio!
A ratio is a comparison of two different quantities.
We can write a ratio in 3 ways using:
1) a fraction
2) the word, “to”
3) a colon :

5. Lucky Charms Continued
5
Remember in 1 box:
287 Marshmallows
2,583 Oats
Agenda
Write the ratio of marshmallows to oats in 3 ways.
Let’s try together:
1) A Fraction
2) The Word “to
3) A Colon
287 Marshmallows to 2,583 Oats
287 Marshmallows : 2,583 Oats

6. Practice – Work with a partner!
6
Write a ratio comparing # of people to # of pizzas for each picture.
1 person: 4 pizzas 4 people: 1 pizza
Agenda
Picture #1 Picture #2
Talk to your partner
 How are the ratios above alike?
 Does the order matter when writing a ratio?
Yes! The situation changes if we change the order of pizza & people.!

7. Explore
7
Agenda
Partner Work:
Use the picture above to write a ratio in 3 ways comparing
the # of lions to # of birds.
lions to birds
6 lions to 1 bird
lions : birds
6 lions : 1 bird

8. Simplifying Ratios
8
2 hours of basketball
Agenda
1) Write in simplest form the ratio of Biking to Running.
=
8 hours of biking
16 hours of basketball
=
1 hour of biking
Let’s explain the meaning of this ratio!
This ratio means that for every 1 hour biking, Christian spent ___ hours
playing basketball.

9. Simplifying Ratios
2) Write in simplest form the ratio of Christian’s
Hint: Add to find the
total # of points
Let’s explain the meaning of this ratio!
This ratio means that for every 25 total hours Christian spent on
9
time spent running to total hours of activities.
activities, he spent ____ hours running.
Scaffold Agenda

10. Summary – Try Independently
1) A ratio is a comparison of two different _________.
2)We can write a ratio in ____ different ways.
3) Ratios can be written as
 As a fraction
 Using the word “to”
Using a colon :
10
Agenda

11. Practice
Complete the following problems then move to the next slide to check.
11
Agenda

12. Practice - Answers
12
Agenda

13. Practice
13
Agenda
Complete the following problems then move to the next slide to check.

14. Practice - Answers
14
Agenda