Simran's Journal Entry

March 8, 2010

Today we learned a new strategy for multiplying polynomials, called "FOIL". Which stands for first, outside, inside, last.

e.g (6a-2) (6a+3)
F (6a) (6a)= 36a^2
O (6a) (3)= 18a
I (-2) (6a)= -12a
L -(2) (3)= -6

= 36a^2 + 18 -12a
= 36a^2+ 6a -6

Journal Entry

March 8, 2010

Today in class, we got our math test back. Then, we corrected some of the questions from the test that everyone had trouble with. Here's one question from the test: simplify by combining like terms:

(2c²+4)+(-c²-2)-(-3c²+4c-4)-(2c²+c+3)

c²+2+(3c²-4c+4)+(-2c²-c-3)

2c²-5c-1

Then we learned :

First

Outside

Inside

Last

It's FOIL which is used for multiplying binomials.

Here's an example:

That's all we did in class today. Now this is for homework:

-7-5 (blue sheet)

-write on your journal

-comment on the blog

Marc's Journal Entry

Hey there you guys 8D! Were supposed to make a post for the best journal entry for the past two units that we've done...I chose the entry for the test of both chapter 7 and 5, which made it so much easier.

Entry: March 19,2010 ******************(Start)

Today we basically corrected our tests. There are a few questions people had trouble with, but I'm not completley sure if they were the ones.
(^2=Squared)

19. Write a simplified expression for the area of the following figure. What is the area of this figure?
--------------------------
20. Apply the distributive property to simplify: 2x(x-4)-3x(x-4)

=2x^2-8x-3x^2+12x (combine like-terms)
=2x^2-3x^2-8x+12x
=x^2+4x
--------------------------
21. A pool table is twice as long as it is wide. If the area of the pool table is 2.88m^2, what are the dimensions of the table.

We are also to try and play a game called "Save the Zogs", in http://www.mathplayground.com/

**********************************(end)

Thank You for reading my entry, leave a comment :)

Zerlina's Journal Entry

April. 5, 2010 - Interpolation and Extrapolation (Chapter 6)

Today in class I learned how to interpolate and extrapolate. I also learned the difference between them because I honestly didn't know the difference before. Interpolating is when you are given a set of values and you estimate between them.

eg.






When x=2.5 then y=?

Interpolate the given values
y=5






Extrapolating is when you estimate a value beyond a given set of values.

eg.







When y=12 then x=?

Extrapolate beyond given values by extending the line
x=8




Thanks for reading one of my journal entries. Please leave a comment!

Scribe Post for April 15, 2010

Hello 9-05. Today in class we got our tests back. We went over the test and I am going to post one of the questions that was "kinda" on it.

To find the answer we must make a table of the question.





 

After you have made a table you want to check if you did it right so make plug in the numbers in an equation.

Since there are 3 more dots for each figure you have to multiply the figure by 3 and then you add 2.



After making sure you are right you have finished the question. That wasn't too hard was it?



After we had finished going through the test we started a new unit, known as Chapter 8 "Solving Linear Equations".

We started the unit off by Mr.B giving us 3 different equations.

First let's see one of the two methods of how to do these (though this one isn't always the best).
5x=30 By looking at this equation I'm sure you could piece out the puzzle and figure out x is equal to 6. Doing this is called Inspection. The other way of doing this is Algebraically.

Remember to think of a scale and to balance everything while doing the equation algebraically.


Now let us do a few more examples of the different equations.

  Now, it is very important that there is no "chew chew" train, so align your equal signs. One very important thing to do is to check or verify your equation. And as you can see while I was checking I didn't put "=21" for each line because...well I'm not to sure but Mr.B told us that we should do it that way and its less writing so more trees will be saved.




Now on to the best part about scribes, the homework.

First, make sure you have finished the 8.1 Warm-Up that was assigned before.

Text Book: Read pages 292-300
                  C.Y.U #2, 3
                  Practice 6-30
8.1 Extra Practice
8.1 Workbook
Foldable

Also be ready to hand in your stash it for Chapter 6.
It should include:
Chapter 6 Test Signed
Chapter 6 foldable
Journal (Don't forget to blog your "best" entry)
And Mr.B will tell you the rest tomorrow.

That's it for my scribe, Casey gets to do Monday's because there won't be a scribe tomorrow.

Wednesday, April 14,2010 Test Scribe!

Hello 9-05, so today in math class we had "the hardest math test in history"...

it was on

To anyone who hasn't taken it yet, you should maybe bring some defibrillators( a device that gives you a jolt in order to start your heart again. *yells clear*) because you might be knocked unconscious by the difficulty of the test.

JUST KIDDING!!

Now back to the test.
So I don't remember most of the questions on the test since we just wrote it today. I will be giving examples pertaining to the test questions.

*If you still don't understand the questions then you should ask Mr. B, he will know.

1)

-Create a Table of Values


-Now Figure out the pattern

Here's a table instead, because I thought it would be easier for me to explain it, and you would understand it.
*You don't have to do this but this is to show you how to figure out the pattern

- How many squares are in Figure 8

2) There was also questions that included
- Examining the graphs
-Interpolating Extrapolating
- and answering the questions provided

Finally,
3) There are 3 topping of Ice cream, how many different ways are there
But you can switch around the letters like this: CS <---- Yes
or SC <----- No

-Sprinkles = S
-Cookies = C
-chocolate chips = CC
- Bubble gum = BG

You could do:
CS
CC S
CC C
S BG
CC BG
C BG

There's 6 Different ways

* Read the Questions carefully on the test

HW
-Be ready to hand in your stash its soon.
*Look back later to see what Mr.B wants us to put in it.
-Chapter 6 work
-New chapter 8 sheets (Math link Intro &

I Leave you with some humour :)
Enjoy! ( It starts at "Welcome")
I think the next scribe is Casey!
Thanks for reading and Please Comment!
(If you don't want to wait tell the beginning then go this link
http://www.glitter-graphics.com/graphics/231084)

Scribe Post for April 12 :)

Hi it's Alyanna :) Well I dont really have anything to scribe about.. But today in class we we're in the computer lab. Its been awhile .. In the lab we got this question.. which i'll try to remember because I didnt bring my binder home today. Fail -_-"

Simran charges a flat rate of $15 per call plus an hourly rate of $3.50. Liem charges $10 per call plus an hourly rate of $4.25. How long of a call would they charge the same amount?

So, we were suppose to graph this question on Excel. I would show you how but unfortunetly I don't have it. -_-" I use to but since my computer got upgraded.. It disappeared. Sorry guys, I'm a fail -_-"

Well, thats practically all we did in class. We also got our Stash-its back! Its about time... AHAHA. ^_^

We ended the class by going on www.mathplayground.com , and played Saving the Zogs. Tehehe :) Well that's all, bye guys !