Loading in 5 sec....

Creating Multiple ProportionsPowerPoint Presentation

Creating Multiple Proportions

- 49 Views
- Uploaded on
- Presentation posted in: General

Creating Multiple Proportions

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Creating Multiple Proportions

Sunday, July 13, 2014

We are learning to…use proportional reasoning to solve problem situations.

- What is a ratio?
- A comparison of two quantities, usually written in the form of a fraction in simplest form.

- What is a proportion?
- Two ratios set equal to one another.

- Ted eats 6 pancakes in 2 days. How many days will it take Ted to eat 15 pancakes?
Table:Proportion:

(15)

(15)

- Insert that missing value into your table.

“Prove that you have created equal ratios.”

“Is there only one proportion that you could have created to solve this problem?”

“What about creating proportions from data vertically in the table?”

This is one proportion!

Solve this proportion!

(2)

(2)

- We know we can make proportions horizontally and vertically using the table…whatabout diagonally?

We cannot use these ratios to help us solve because they do not create equal ratios (proportions).

1. Do these make equal ratios?

2. Can we make a true proportion?

Why does this comparison not give us a proportion?

3. Can we use this to help us find a solution? Why or why not?

- Practice:
- Mr. Cain sells 4 candy bars every 5 hours. How long will it take him to sell 16 candy bars?

Your job:

Create and solve TWO different proportions that could be used to find the solution in this problem situation.

Be ready to share with the class.