3.3 Proportions

How can you use proportions to determine when things are fair?

Math Minute Directions• Work by yourself• You have 10 minutes to

complete the first 5 questions

• When you’re done…• Math Facts in a Flash• Accelerated Math• Incomplete work• D-11 Math Review

Raise your hand if you have a question!

Math Minute 10 ANSWER KEY

1. False2. True3. False4. 12/2, 8/8, 22

5. 3/86. 7. A8. 69. 1/610. 1/3

Math Minute Extension Time

• If you are an A-Team Member, you may go to the following websites:– Mathplayground.com– Funbrain.com

• If you are NOT an A-Team Member, your computer needs to be closed. You should be working on one of the following things:– Incomplete/missing work– D-11 Math Review 1.4 DUE FRIDAY– Extra Credit

Announcements• D-11 Math Review 1.4 DUE Friday• Winter Math MAP on Thursday• STAR Math Test on Monday• December Newsletter DUE Friday

Results from Last Class

Due to the Project Night, I didn’t get an opportunity to grade the quizzes. You will get feedback tomorrow.

We are moving onto 3.3 Proportions today, but we will still be reviewing concepts from the 3.1 Mini-Quiz.

Data from Chapter 3 Pre-Test# Section Skill

1 3.1 Ratio as a fraction in simplest form

2 3.1 Ratio as a fraction in simplest form

3 3.1 Find the unit rate

4 3.1 Find the unit rate

5 3.3 Tell whether the ratios form a proportion - expression

6 3.3 Tell whether the ratios form a proportion - expression

7 3.3 Tell whether the ratios form a proportion - in words

8 3.3 Write a proportion

9 3.4 Write a proportion

10 3.5 Solve the proportion using multiplication

11 3.5 Solve the proportion using multiplication

12 3.5 Solve the proportion using multiplication – Distributive Property

New Groups/New Partners – Period 5

Red: Darius, Evelyn, Reyna, Leslie, Juan, and DavidBlue: Kendrick, Anastaja, Francisco, Deasia, Miguel, Nathan, and KatieYellow: Sheahona, Samantha, Rachel, Luis, Brody, and SamOrange: Brandon, Jenny, Bela, Wendy, Joseph, and Yoanna

Clockwise from bottom left

Class Reflection for Moving ForwardWhat are two-three behaviors we need to work on to help our class move forward?

Who are two-three people who are already demonstrating these behaviors?

LEARNING TARGET3.3 Proportions – How can you use proportions to tell when things are fair?

Today I can compare unit rates to determine when things are fair or equivalent by answering at least two out of three exercises from the book correctly.

TCAP STANDARDS1.4a Use the relationships among fractions, decimals, and percents, including the concepts of ratio and proportion, in problem-solving situations.

6.1a Use concrete materials or pictures to explain how ratios, proportion, and percents can be used to solve real-world problems.

AGENDA• (10 min) Math Minute 10 (1/2 sheet)• (5 min) Grade Math Minute• (10 min) Intervention/Extension• (5 min) Announcements & Results• (5 min) Lesson Overview• (15 min) 3.3 Lesson Start Thinking• (25 min) MODEL Determining

Proportions • (15 min) Exit Ticket: Practice from the

Book

KEY VOCABULARYRateProportionProportional

HOMEWORK & UPCOMING EVENTSMissing & Incomplete AssignmentsD-11 Math Review 1.4 DUE Friday

Get Materials Ready

CLASS

1. Set-up your record sheet with a half slip of paper at the table or use your own paper

2. Open your textbook to p. 110

NameDatePeriod

3.3 Start ThinkingHow Do You Determine Fairness?

Are you paying the same amount each time? How do you know?

Lesson Check-In

MODEL – Determining ProportionsTEACHER: p. 110 Part B

MODEL – Determining ProportionsTEACHER: p. 110 Part B

Answer: First day 45 miles per hour; Second day 40 miles per hour

MODEL – Determining ProportionsCLASS: p. 110 Part C

MODEL – Determining ProportionsCLASS: p. 110 Part C

Answer: Both days 75 calories per mile

MODEL – Determining ProportionsPARTNER: p. 110 Part D

MODEL – Determining ProportionsPARTNER: p. 110 Part D

Answer: First day $0.45 per song, Second day $0.50 per song

Lesson Check-In

Partner Book Practice p. 114 #18-20Pick 2 SHOW YOUR WORK!

Tell whether the two rates form a proportion.• #18 12 players from 21 teams; 15 players from

24 teams• #19 440 calories in 4 servings; 300 calories in 3

servings• #20 120 units made in 5 days; 88 units made

in 4 days

Partner Book Practice p. 114 #18-20Pick 2 ANSWER KEY

Tell whether the two rates form a proportion.• #18 12 players from 21 teams; 15 players from 24

teams – Answer: 1.75; 1.6 Not proportion

• #19 440 calories in 4 servings; 300 calories in 3 servings – 110; 100 Not proportional

• #20 120 units made in 5 days; 88 units made in 4 days – 24; 22 Not proportional

Class Reflection for Moving ForwardWhat are two-three behaviors we need to work on to help our class move forward?

Who are two-three people who are already demonstrating these behaviors?