Pre-AlgebraTUESDAY, AUGUST 19

Learning Target

I will understand that relationships between quantities can be compared in different ways.

Launch

Can you think of any commercials that compare one product to another?

https://www.youtube.com/watch?v=pt2O-LPzX4g

Can you think of any commercials that compare by using numbers?

https://www.youtube.com/watch?v=V_gGAPOZbFA

Launch

http://dashweb.pearsoncmg.com/main.html?r=15469&p=642

Statements: 10 more people prefer Cola Nola than Bolda Cola 2/3 of the people surveyed preferred Cola Nola

Why did they end up with two different conclusions from the same survey results?

Problem 1.1 A Question 1

Problem 1.1 A Question 2

Problem 1.1 A Question 3

• The ratio of 17, 139 to 11, 426 THINK: round to compatible numbers 17 139 rounded up to 18,000 and 11, 426 rounded up to 12,000…what is that reduced?

• The ratio of 3 to 2 (a part to part comparison) could also be written as 3 to 5 ( a part to whole) comparison. 3 to 5 is 60%

• The difference between 17, 139 and 11, 426 is 5,713.

Problem 1.1 A Question 4

• 1.5 times as many people preferred Bolda Cola to Cola Nola (like the Samsung commercial made a comparison)

• 6 out of 10 people preferred Bolda Cola to Cola Nola

Problem 1.1 A Question 4

• Remember: 60% means 60 out of 100

Problem 1.1 B Question 1 and 2

• 150 kids surveyed• 50 prefer a concert• 100 prefer an athletic

event

1. Yes. 50/150 would reduce to 1/3

2. Yes. 100:50 = 2:1

Problem 1.1 B Question 3 and 4

• 150 kids surveyed• 50 prefer a concert• 100 prefer an athletic

event

1. Yes. 50/150 would reduce to 1/3

2. Yes. 100:50 = 2:13. Yes. 50: 100 = 1:24. Yes. 100-50 = 50

Problem 1.1 B Question 5 and 6

• 150 kids surveyed• 50 prefer a concert• 100 prefer an athletic

event

1. Yes. 50/150 would reduce to 1/3

2. Yes. 100:50 = 2:13. Yes. 50: 100 = 1:24. Yes. 100-50 = 505. Yes. 100 = 2 x 506. No. About 33% of students

prefer concert to athletic event

Rate your understanding

Learning Target

I will understand that relationships between quantities can be compared in different ways.

Homework tonight

Complete page 7 of blue packet

Challenge questions: (ACE Questions start on page 19 and are in numerical order) #5 and #8