MATH-a-licious Monday!1. Change group roles.

2. Warm Up: Workbook p. 34 (#5 a-e)Show your work! Find BOTH “x” and “y” Use either scale factor or ratios.

3. Write a question that deals with ratios on the note card that you think will be a challenge for others to solve. Be sure you solve it on a separate piece of paper as the answer key.

ONLINE TIMER for 10 minutes

Warm Up Answers: WB 34 (#7-11)7) X = 4 2/3 y = 8

8) X = 18 y = 24

9) X = 21 y = 24

10) X = 20 y = 9

11) X = 21.6 y = 20

# correct

10

Runners go get…New Notebook Assignment Sheets Today’s Lab Sheet------------------------------------------------------

Make sure your Notebook Assignment Sheet looks like this:

# Date Book/ Brief Description1. 11-14 C&S Problem 2.1, ACE 1-3, 9-13

BIG IDEA: Comparing ratios, percents, and fractions

Launch…How many of you have ever

made orange juice from a can before?

What was involved in making it?

Mix A 2/5 40%Mix B 5/14 35.7%Mix C 1/3 33.3%Mix D 3/8 37.5%

Remember

part-to

whole!

Mix A 2/5 40%Mix B 5/14 35.7%Mix C 1/3 33.3%Mix D 3/8 37.5%

Nope! Yes! Because you need a part-to-whole

comparison!

Mix A - 5 cups = 1 batch, 1 batch = 10 people, 240/10 = 24 batches

Mix B - 14 cups = 1 batch, 1 batch = 28 people

240/28 = 8.57, so 9 batches

Mix C - 3 cups = 1 batch, 1 batch = 6 people

240/6 = 40 batches

Mix D - 8 cups = 1 batch, 1 batch = 16 people

240/16 = 15 batches

Mix A - 24 batches 24 x 2 = 48c. concentrate 24 x 3 = 72c. H2O

Mix B - 9 batches9 x 5 = 45c.

concentrate9 x 9 = 81c. of H2O Mix C - 40 batches40 x 1 = 40c.

concentrate40 x 2 = 80c. H2OMix D - 15 batches15 x 3 = 45c.

concentrate15 x 5 = 75c. H2O

Make a table to help organize!

Look at next slide

MIX A

MIX B

MIX C

MIX D

CONCENTRATE to WATER

2 to 3 5 to 9 1 to 2 3 to 5

# BATCHES 24 8.6 40 15

CUPS of CONCENTRATE

48 ~43 40 45

CUPS of WATER 72 ~77 80 75

TOTAL CUPS of JUICE

120 120 120 120

Discuss this question with your group and be ready to respond in 1 minute or less… On the previous slide you saw that

43 and 77 were approximations for Mix B...

Why can’t you make EXACTLY 120 cups with whole numbers by scaling up the recipe?

MIX A MIX B MIX C MIX D

CONCENTRATE 2/5 5/14 1/3 3/8

WATER 3/5 9/14 2/3 5/8

TOTAL 5/5 = 1

14/14 = 1

3/3 = 1

8/8 = 1

Make sure your Notebook Assignment Sheet looks like this:

# Date Book/ Brief Description

1. 11-14 C&S Problem 2.1, ACE 1-3, 9-13

Begin your ACE questions…