Ontario Education Resource Bank

Ontario Education Resource Bank 

Is a resource that can be accessed by students to review topics taught in all subject areas.  All of the resources are interactive clips that show you video clips of the concept and then have you complete an activity. 

http://search.elearningontario.ca/index.php

username: dpcdsbstudent
password: oerbs

Visit these clips for fraction practice:

Fraction Action
CLIPS - Fractions: Exploring Parts and Whole Relationships

Fractions - What the 1/2 are they all about! - Representing Fractions

Representing Fractions

Fractions are how we represent the part of something. Fractions are used when cooking and baking. We use fractions to represent the amount of an item. We can use fractions to describe how much time has gone by. We can use fractions to represent how much of a task we have completed. We can use fractions to describe how much money we have spent or how much we have saved. There are lots of practical applications for fractions. Therefore we have to understand them to be one with them. 

Try This!

Look around your house how many many examples of fractions can you find. Write them down. 

So what do you need to know about fractions?

1. What does a fraction mean?

Fractions have two parts to them:

      2   - this is the numerator, it represents the part that you are talking about.

      4   - This is the denominator, this represents how many parts there are to make up the whole.

When looking at a fraction you have to ask yourself what is the whole and what model is being used.

2. What are the different ways can fractions be found?

There are five different ways we can find a fraction. 

Set model - a set model is a collection of objects that have something in common. 

We can use a fraction to describe what some of the objects have in common. 

five women and 3 men men 

5/8 represents women 

3/8 represents ment

Regional or area model - a regional or area model is dividing the shape into equal parts. 

Measure model - is a model that shows using a measure of something like a measuring cup, or a ruler. We can describe how much the fraction

There are also division and ratio models as well but we are not discussing those models as of yet. 

3. How do we write a fraction when looking at a model?

• Begin by determining what the whole is. Write the number that represents the whole as the denominator
• Determine what is being represented, what is shaded or missing and place that in the numerator 

Try This!

Represent these fractions using all three models (sets, area and measure models)

Is there any fraction that can't be represented by a model? Why are why not?

3/4           5/8               3/5              2/7           4/8

How are all these fractions alike? How are they different?

 

Algebra Test

Here is the outline for the Algebra Test

• Determining what the recursive and explicit pattern rule is for the pattern
• Determining the algebraic expression for a problem
• Solving algebraic expressions
• BEDMAS - see instagram
• Prime and composite numbers - see Blog earlier this week for a review whats up guys 

SES oOutline

Here is the outline for the SES test - April 23rd

Format: true and false questions
              short answer questions
             application questions

• difference between importing and exporting
• identify some of Canada's imports and exports
• difference between supply and demand
• understand the terms tariffs, domestic goods, GDP (gross domestic product)
• understand how Canada's natural resources help our economy
• identify some of Canada's largest trading partners
• identify some of Canada's connections with the USA (similarities and differences)
• differences between a developed country and developing country and give an example
• identify a couple of non-governmental organizations and its purpose.
• (Ex: doctors without Borders - provides medical care to those who are do not have this care., UNICEF fights for childrens rights around the world, Greenpeace - environmental concerns)
• identify a couple of Canada's contributions which have influenced other countries globally
• (insulin - for diabetics, Terry Fox - has raised money for cancer research)

Prime, Composite, Factors and Multiples

PRIME, COMPOSITE, FACTORS AND MULTIPLES

Part of understanding math is to understand the terminology that mathematicans use to describe numbers. Here are some definitions you need to know.

Prime numbers - A prime number has only 2 factors. One and itself.
Example:  19, 3, 17, 13, 17, 5
All of these numbers can only be multiplied by 1 and itself

Composite Numbers - A composite number has 3 or more factors.

8 = 1x8
8 = 2x4

Interesting fact: All even numbers are composite numbers because 2 is a factor of all of them. But 2 is a prime number because its only 2 factors are 1 and 2.
Example: 15, 14, 27, 20, 24

Multiples - A number that is the product of two factors. Its skip counting.

First 5 multiples of 24 are: 24, 48, 72, 96, 120

Factors - A whole number that divides a whole number without a remainder. One of the two whole numbers the multiply together to form a product.

24 - 1 x 24, 2 x 12, 3 x 8, 4 x 6

Try This!

Can you identify what numbers are prime and which numbers are composite?


 5,   18,   49,    52,    63,    78,    96,   121,   24,    32,  36,   72,   81,   11

For the numbers that are composite identify the factors of the numbers.

What are the multiples of these numbers:

3, 7, 8, 9,

Where could you find the multiples of these numbers? What are they similar to?

Understanding Algebra!

T-Tables and Algebraic Expressions
Algebra is used to study relationships between numbers. We can see that in a t-table

The relationship between the two numbers is we multiply by 3 and add 1.

Algebraic Expressions
We can also use algebra to determine change. For instance if you were babysiting
and you were paid $8 an hour, you could use algebra to determine how much money you
were going to make. On Tuesdays you babysit for 4 hours and on Saturday you babysit for 6 hours.
Every time you babysit the number of hours changes (hours is the variable)
We can use the algebraic expression (a combination of letters, numbers and operations to help us determine how much we will make.

8H - is the algebraic expression. (8 represents the amount we make each hour, and H represents the number of hours you babysit)

Now we can also figure out how many hours we need to babysit to make a certain amount of money.

8H = 40 (8 represents the amount we make each hour. H represents the number of hours we work, and 40 is the total amount we need to make for that new pair of shoes)

8H = 40  First we need to isolate H (In order for H to reveal himself he needs to be by himself.)
8H = 40  We can get rid of the 8 by doing the opposite operation. Whatever we do on one side
 8       8    we need to do on the other side.
                 Now we have to do the division
H = 5       That represents the number of hours we need to work to make $40

Now you Try It!

1. To rent a movie it costs $2.50 each day. If I rented the movie for 4 days how much money did it cost me. What is the algebraic expression.
I rented a movie and when I returned my bill was $10.00 how many hours did I rent the movie for?

2. Michael is making chocolate chip oatmeal cookies and it calls for twice as much chocolate chips as it does oatmeal. If there is 150 mL in total what is the amount of chocolate chips that you need.

Dollar Words

We have been reading the novel because of Mr. Terupt by Rob Buyea in our class.
Mr. Terupt the main character has given the class an assignment they must find as many
words that equal up to a dollar. This is a great activity to expand your vocabulary
and practice your mental math. Share your dollar words as you find them on the Blog.

DOLLAR WORDS

A = 1	B=2	C = 3	D=4	E=5	F=6
G=7	H=8	I = 9	J=10	K=11	L=12
M=13	N = 14	O = 15	P=16	Q=17	R=18
S=19	T=20	U=21	V=22	W=23	X=24
Y=25	Z=26

Each letter is equal to an amount that is beside it. How many words can you come up with that equal a dollar?

DELIVERY = 4 + 5 + 12 +9 + 22 + 5 + 18 + 25 = 100 OR 1.00