1. Unit 1 Lesson 23 Ms. Rodriguez & Ms. Berger UNIT RATES & PRODUCTIVITY

2. DO NOW How do we find the unit rate? Find the unit rate for the following- 72 jumping jacks in 2 minutes 180 miles in 3 minutes CHALLENGE: $5.00 for 2 packs of Oreos

3. FOCUS QUESTION How can unit rates determine productivity ?

4. EXAMPLE #1 Gregg and Roderick are mowing lawns on a Saturday morning. Greg can cut 3 lawns in 5 hours. Roderick can cut 5 lawns in 8 hours. Who is cutting lawns at faster rate? Let’s find the unit rate for each boy.

5. HOW CAN WE DETERMINE WHO IS BEING PRODUCTIVE ? How much work is getting done in a amount of time. Greg can cut lawns at.6 lawns/hour Roderick can cut lawns at.625 lawns/hour

6. EXAMPLE #2 Congratulations! Your restaurant is opening in a week! Advertising is important and you hired 2 employees who post flyers around the city. The employee who works the fastest will receive a $10 bonus. One employee, Darien, posts 350 flyers in 2 hours, while Taniya posts 510 flyers in 3 hours. Taniya receives the bonus. Do we agree with this decision?

7. WHAT INFORMATION DO WE NEED TO COLLECT TO SUPPORT OUR ARGUMENT? Darien’s unit rate: Taniya’s unit rate :

8. PARTNER WORK Answer the questions that will appear on the following slide. Decide who will record your work and answers onto a sheet of paper. Make sure this is a SHARED effort!

9. PARTNER WORK QUESTIONS: 1.Who delivers newspapers at a faster rate: someone who delivers 60 newspapers in 10 minutes or someone who delivers 42 newspapers in 6 minutes? How many newspapers will the fastest person deliver in an hour? 2.Who completes their addition homework at a faster rate: Student A answers 60 questions in 10 minutes or Student B who takes 5 minutes to answer 25 questions? 3.A stuntman is testing parachutes to see which has the slowest descent. A red parachute falls 10 feet in 4 seconds and a blue parachute falls 12 feet in 6 seconds. Which parachute should he use?

10. PEER REVIEW Trade your work with another pair either within your cabin or a nearby cabin Each pair will receive a post it. On the post its you are to provide feedback on the following:  Is the answer stated in a complete sentence?  Does the answer offer a reason or evidence?  Does the answer include the units?  Do you agree or disagree with their answer?  Does the strategy or work show how to solve the problem?

11. CLASS REVIEW Who delivers newspapers at a faster rate: someone who delivers 60 newspapers in 10 minutes or someone who delivers 42 newspapers in 6 minutes? How many newspapers will the fastest person deliver in an hour? 6 newspapers/minute vs. 7 newspapers/minute Who completes their addition homework at a faster rate: Student A answers 60 questions in 10 minutes or Student B who takes 5 minutes to answer 25 questions? 6 questions/minute vs. 5 questions/minute A stuntman is testing parachutes to see which has the slowest descent. A red parachute falls 10 feet in 4 seconds and a blue parachute falls 12 feet in 6 seconds. Which parachute should he use? 2.5 feet/second vs. 2 feet/second

12. EXIT TICKET Ms. Rodriguez can grade 25 homework assignments in 20 minutes. Ms. Berger can grade 36 homework assignments in 30 minutes. Explain who is able to grade more homework assignments.