Wednesday, April 30

7th graders decided to give a t-shirt to everyone of their sponsors. The t-shirt costs $4.75. How does that affect the graph and the equation?

Homework: page 18 #6-9, page 22 #23, 26, page 26 #31, 32
Due Thursday, May 1

Tuesday, April 29, 2014

Linear Relationships: constant rate of change

Pledge Plan Equations

6th Grade: M = $10

7th Grade: M = ($2) x (x)

8the Grade: M = $5 + ($.50) x (x)

Monday, April 28, 2014

There are three ways to represent a linear relationship:

- Graph
- Table
- Equation

Pledge Plans
 
Pledge 1:
$10 regardless of how far people walk 

Pledge 2:
$2 per mile regardless of how far people walk

Pledge 3:
$5 flat donation plus .50 per mile

Tell everything you know about these plans.

Dependent variable - (on the y axis) the amount of money raised because it depends on the number of miles walked
Independent variable - (on the x axis) miles because the miles don't change based on the amount of money raised

Homework: Fix the dependent and independent variables on your graph if you had them switched. Due tomorrow.

Tuesday, April 8

What did we learn from the Otto and Carla problem?

You can solve a problem in different ways - ratios, proportions, fractions, rate tables, unit rates, graphs, equations, constant of proportionality and percent table

Homework: Computation R corrections due Wednesday

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