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Math 8 Start.notebook 1 September 10, 2013 Sep 212:51 PM Math 8 with Mrs. Doshewnek, Mrs. BodmerHoff, and Mr. North Sep 21:09 PM To achieve success in Math: Complete assigned homework Do extra work or ask for more examples if necessary Study for exams Talk to your teacher

Math 8 Start.notebook - · PDF fileMath 8 Start.notebook 2 September 10, 2013 Aug 19­12:15 PM Go through Math 8 Outline ­ Assignment Expectations ­Marking Criteria ­Materials

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Math 8 Start.notebook

1

September 10, 2013

Sep 2­12:51 PM

Math 8

with

Mrs. Doshewnek, Mrs. Bodmer­Hoff, 

and Mr. North

Sep 2­1:09 PM

To achieve success in Math:

­Complete assigned homework

­Do extra work or ask for more examples if necessary 

­Study for exams

­Talk to your teacher  

Math 8 Start.notebook

2

September 10, 2013

Aug 19­12:15 PM

Go through Math 8 Outline

­ Assignment Expectations­Marking Criteria­Materials

Teacher Expectations­Respect­Ask for help when confused­Practice math daily (AKA do your homework!)

Aug 19­12:17 PM

The following is meant to be a quick review of Math 7.

It is meant to:

­ help you understand how your Math Education has been and will be developed

­ allow you to figure out where your strengths and weaknesses may be

­ allow you to get to know your teacher and for your teacher to get to know you

Math 8 Start.notebook

3

September 10, 2013

Sep 2­3:15 PM

Rate Your Understanding

1  ­   Poor recollection

2  ­   OK

3  ­  Above average

4  ­  Excellent

Sep 2­3:26 PM

Unit 1 ­  Patterns & Relations

1. What is a variable? Write a definition and/or give an example of it.

Pull

PullPossible Answer:

Variables represent numbers in equations.

They can be symbols like an ice cream cone, or simply letters like the letter A.

Math 8 Start.notebook

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September 10, 2013

Aug 19­12:23 PM

2. Solve the following Algebraic Expression.

6 r + 3 given that r = 2

PullPull

Substitute 2 for r in the expression. 

6 x ( 2 )  +  3

BEDMAS says to Multiply first.

So we are left with   

12 + 3 

Which equals     15.

Aug 19­12:27 PM

Now,

Rate your understanding.    1 ­ 4

This will be seen again in Unit 6.

Math 8 Start.notebook

5

September 10, 2013

Sep 2­3:26 PM

Unit 2  ­   Integers

You dealt with the more difficult adding and subtracting integers.  This year, we will be focussing on multiplying and dividing them.  It is often much easier.

List the RULES to ADD and SUBTRACT integers.             You can draw pictures if it's 

easier.  Think of examples like (+1) + (­1)  =  ?

Aug 20­9:32 AM

Rule Example

Two like signs become a positive sign +(+)  3+(+2) = 3 + 2 = 5

−(−) 6−(−3) = 6 + 3 = 9

Two unlike signs become a negative sign +(−)  7+(−2) = 7 − 2 = 5

−(+) 8−(+2) = 8 − 2 = 6

Rules to recall Simply Put:

Math 8 Start.notebook

6

September 10, 2013

Aug 20­9:22 AM

Rules to recall in detail:

­ No Sign Means Positive :  if a number has No Sign, it usually means that it is a positive number     Ex: 13 is really +13

­ Adding positives is just simple addition 2+3=5

­ Subtracting positives is just simple subtraction like 6 ­ 3 = 3, unless you have 

a smaller number first like 5 ­ 6 = ­ 1

Aug 20­9:25 AM

Tougher ones to Remember: 

  ­Subtracting a Negative is the same as adding

   6 ­ (­3) = 6 + 3 = 9

  ­Subtracting a Positive or Adding a Negative uses SUBTRACTION

   6 ­ (+3) = 6 ­ 3 = 3    (Easier to think about)

   5 + (­7) = 5 ­ 7 = ­2 

Math 8 Start.notebook

7

September 10, 2013

Aug 19­12:31 PM

Unit 2 of Grade 8 Math is Multiplying and Dividing Integers

Now,

Rate your understanding.    1 ­ 4

Sep 2­3:26 PM

Unit 3  ­  Fractions, Decimals & Percents

Write an example of each of these.

Math 8 Start.notebook

8

September 10, 2013

Aug 19­12:31 PM

Unit 3 is Operations with Fractions

and Unit 5 is Percent, Ratio, and Rate

Rate your understanding of this topic    1 ­ 4

Sep 2­3:27 PM

Unit 4 ­  Circles and Area

Describe, define, or draw what these concepts mean.

Circumference

Radius

Diameter

Math 8 Start.notebook

9

September 10, 2013

Aug 20­10:12 AM

Describe Pi.  

3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 8214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196 4428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273 724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609... 

Aug 19­12:33 PM

Create your "Typical Summer DAY" circle graph.  See the example started below...

Sleep 8 hours

Computer 2 hrs

Math 8 Start.notebook

10

September 10, 2013

Aug 19­1:19 PM

Rate your understanding of this topic    1 ­ 4

You will see it in Grade 8 Unit 4 Measuring Prisms and Cylinders

Sep 2­3:27 PM

Unit 5  ­  Operations With Fractions

56 + 2

6 = 76

This is adding fractions with LIKE denominators.

Math 8 Start.notebook

11

September 10, 2013

Aug 20­10:16 AM

But recall that we should not leave the fraction as an ___________ fraction.

That would be improper.

Write         as a mixed number. 76

Think wholes and remainders.

Aug 19­1:23 PM

Now see if you remember how to add using UNLIKE denominators.

34

35

+             =  1520

1220

2720

+             = 

Math 8 Start.notebook

12

September 10, 2013

Aug 19­1:22 PM

The Grade 8 Unit 3 Operations with Fractions is also a lot easier this year, compared to adding and subtracting as you will be Multiplying and Dividing.  You will do great as long as you know your multiplication table!!!

(Start practicing now    : )    What is 5 x 6?    )

How well do you remember Fractions? Rate yourself now.

Sep 2­3:28 PM

Unit 6 ­  Equations

Write the Equation and Solve by Inspection.

1. a) 6 more than a number is 22.

Pull

Pull

Math 8 Start.notebook

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September 10, 2013

Aug 19­1:32 PM

1. b)   A number divided by eight is nine.

PullPull

 n __

 8            =  9

Aug 19­1:34 PM

Unit 6 Linear Equations and Graphing is where you will see this idea again. 

What is your understanding?   1 ­ 4  ?

Math 8 Start.notebook

14

September 10, 2013

Sep 2­3:28 PM

Unit 7 ­  Data Analysis

1. What is the probability to get the number 1 on a proper 6 sided die?

16

Sep 2­3:38 PM

2.  What is the probability of getting SNAKE EYES in ten rolls?   Give an educated guess out of ten.  

12345678910

CLA

SS R

ESU

LTS

Math 8 Start.notebook

15

September 10, 2013

Sep 2­3:41 PM

Interpret information from a Graph

3. Write as many things as you can about this graph.

Aug 19­1:35 PM

Unit 7 Data Analysis in Grade 8 Reviews this and a few new concepts.

Rate your understanding.

1 ­ 4

Some ideas: It's a bar graph, there is no title, most bushels were demanded at $2.

Math 8 Start.notebook

16

September 10, 2013

Sep 2­3:36 PM

Unit 8  ­  Geometry

Draw a translation (slide) and a reflection of the shape.

Aug 19­12:13 PM

Rate your understanding of Geometry.

Math 8 Start.notebook

17

September 10, 2013

Aug 19­1:44 PM

Now, look back at what you have done.  Do you see some units where you may have strengths?  Do you see some units where you may have weaknesses?  

Regardless,

It is time to get to work...Happy Mathing!

Aug 20­10:18 AM