1. Lesson 3.1.2 – Teacher Notes Standard:
6.RP.3c Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.
Chapter 9 – Heavy focus on percentages
Lesson Focus:
You are defining a percent and introducing the percent ruler as a strategy to represent equivalent portions in different forms. (Maybe use 3-29 as an exit ticket or closure.)
(3-27 and 3-28)
I can convert among fractions, decimals, and percents.
Calculator: Yes
Literacy/Teaching Strategy: Turn and Talk

2. BELLWORK

8. p to 3-29

10. 3-26 (cont.)
In your sample there are 22 raisins and 18 peanuts
Represent the portion of raisins in the whole sample as a fraction. How could someone tell the size of the whole sample by looking at your fraction? Explain.
Recall that the definition of “percent” means “out of 100.” Use a Giant One to change your fraction from part (a) to a percent.

11. FOCUS QUESTION 3-27. USING A PERCENT RULER
With your team, you will use the percent ruler shown above to examine a sample of 40 raisins and peanuts.
Copy the percent ruler onto your paper. Then use it to determine how many raisins would make 50% of the sample. How many raisins are in 10% of the sample?
Use your percent ruler to calculate the percent of raisins in the sample you were given in problem 3-26.
Which method do you prefer, using a Giant One or a percent ruler? Why?

12. FOCUS QUESTION
3-28. How can the percent you found in problem 3-27 help you predict how many total raisins that might be in different amounts of mix?  Work with your team to draw a diagram to help you make sense of each of the following questions.  Be prepared to explain your thinking to the class.
What if your sample had contained a total of 100 peanuts and raisins?  How many raisins would you predict would have been in that sample? 
What if your sample had contained a total of 150 peanuts and raisins?  How many raisins would you predict would have been in that sample? 
What if your sample had contained a total of 82 peanuts and raisins?  How many raisins would you predict would
have been in that sample? 

13. LEARNING LOG
Write your own definition of the word “percent.” Then describe at least one method to find a percent from a sample.

16. PRACTICE
Lucy is taking advantage of the sale at Hollister. She wants to figure out how much she will save on a purchase of $40. Lucy’s percent ruler is shown below. Help her figure out 30% of $40.
$40

17. PRACTICE (cont.)
Mario really needs new shoes for school. He sees that Foot Locker has a sale for 40% off Nike shoes. Mario likes a pair that cost $90. Use the percent ruler below to determine how much Mario will save.
$90

18. HOMEWORK