Monday, March 31

Rate: Comparison of 2 quantities measured in different units

3 pizzas
______
8 people

Unit Rate: Rate where the quantity is equal to 1 unit (cost of 1 pizza)

Constant of Proportionality: How are unit rates and constant of proportionality related?

10 oranges for $2.00
Create a unit rate. How much for 1 orange? How many oranges for $1.00?

Monday, March 24, 2014

Otis' Method:
1 cup concentrate/4 cups total = x cups concentrate/128 cups total
 4 cups total/1 cup concentrate = 128 cups total/32 cups concentrate

Proportion: 2 equivalent ratios that are set equal to each other

Sarah's dog is given a vitamin dosage.
A ten pound dog is given a 1 teaspoon dose.
Sarah's dog weighs 80 pounds. What is the dosage? 
Her other dog weighs 7 pounds. What is the dosage?

No new homework 




 

Wednesday, March 19

Working with Percents
10 is what % of 25?
10 is what % of 30?

Bo's Method

Divide 100 by the whole #. Multiply the part # by that result.
Grace's Method

Put into fraction (part/whole) = give a decimal. Multiply decimal by 100 to get %.
General Rule:
Divide the 100 by the whole #
Multiply that part # by that result

Homework: L-21 page 91 #1-7, page 34 #66-68

Tuesday, March 18

What are some different ways to compare data?

Ratios
Percents

No new homework

Monday, March 17

Neilson Middle School
150 Student Total
100 of the students like to watch TV in their free time
50 of the students like to listen to the radio in their free time

On L-17, write down as many comparative statements as you can about the data.

Two types of Ratios:

• Part to Whole 
• 50 : 150 
• 50 students who prefer radio to 150 students total
• Compares one part pf the whole to the total
• Part to Part 
• 50 : 100
• 50 students who prefer radio to 100 students who prefer TV
• Compares two of the parts of the whole to each other

A different message is conveyed depending on the type of ratio that is given.

No new homework

Tuesday, March 11

How do advertisements use comparisons?

2 out of 3 dentists .....
Which soft drink do you like better?
60% of people preferred....
In a taste test, 5,713 more people preferred....

Homework:

• Comp Test Corrections due Friday, March 14
• Pi Day is Friday. 
• 3.14 plus 5 additional digits for 1 piece of pie
• 3.14 plus 7 additional digits for 2 pieces of pie

Thursday, March 6

On R-15 of a notebook at the table - divide the page into 3 sections
Read another group's poster
Take notes on questions you have for the group
Make comments on all 3 sections of the poster: agree? disagree? something you really liked?

On R-16:
Find the missing side lengths in 2 different ways.

No New Homework

Wednesday, March 5

With Table groups: 

1. Write the scale factor ratio and describe in words what it means

2. Write the side length ratio and describe in words what it means.

3. How are these the same and different? How do they prove the triangles are similar? 

Use math language: scale factor, ratio, corresponding side lengths