Showing posts with label shaneille9-05. Show all posts
Showing posts with label shaneille9-05. Show all posts

Scribe post for May 11

Thursday, May 13, 2010
Hello 905. Sorry about the lack of scribe posts. So here's for the class two days ago.

Today in class we started Chapter 9. * Inequalities*

So we started up with some symbols we knew, and some we didn't know.



Here are some examples of how we use these symbols. (algebraically)



And here is how you express it graphically.







2- step Inequalities.

How do you solve this?

just like in linear equations.






Ok theres the quick overview of what we did in class. Sorry if I missed some things, I got the main points down I think. Homework was
9.1 All odd, or even numbers up to 22.
Extend 23+ 24 or 23+ 25

And today for homework.
Practice all odd numbers.
All of apply
Extend 23 and 26
Choose two of 24, 25, 27, 28
Then next person for scribe would be Melissa. Please comment.

Shaneille's Journal Post

Sunday, April 18, 2010
March 3 2010
Today we started chapter 7.

First thing,

(Negative)(negative) = Positive

(positive) (positive) = Positive

(positive)(negative)= Negative


Learning to multiply.




(2x)(3x)
which means (2)(3)(x)(x)

(2)(3) =6
(x)(x) = x^2
So (2x)(3x)=
=6x^2





Then dividing.



6x/-3x = -2x



Scribe for March 3, 2010

Wednesday, March 3, 2010
Hello 905! Today we started class by reviewing two questions from the homework.

Question #14 from the Chapter 5 Practice test.






A) 4n+7+5n+6= 9n + 6
B) This could represent the difference between each squirrel.
C) (5n-1)-(4n+7) = 5n-1-4n-7
= n-8


* remember that when the negative is outside the brackets whatever inside is the negative*
Next Question #15 from the Chapter 5 practice test.




A) $100+5b b=bowling shoes
B) $20+4b b=pizza
C) 100 + 5b + 20 +4b = 120+9b

D) 120+9(9) =120 +81

= $201



~CHAPTER 7 ~
Multiplying and Dividing polynomials.
one thing to know about negative and positive numbers.


(-)(-)= +


(+)(+) = +

(-)(+) = -
(+)(-) = -
(-)/(-) = +
(-)/(+) = -
(+)/(+)= +




(2x)(3x)



so (2x)(3x)= 6x(squared)


* reminder (-2x)(4x) the first set is on the side so -2x would be on the side, the second set is always on the top 4x would be on top*



Another example using algebra this time .




Dividing


~Homework time ~ Due Friday!

Read pg 254-258

Key ideas pg 259

Cyu #2

Apply

3 or 4 ,5 or 6 , 7 or 8, 9,10, 11 or 12, half of 15 and 16, 17-24, 26+27

journal.

math links,

Foldable.

I just touched on a bit we did on class, sorry if i missed something, comment please.

The next scribe is Simran.

Spin A Win - Shaneille and Kristin

Monday, January 4, 2010
Spin A Win

~Rules~
Object:Get to the end of the board ( number 20) to win
Playing the Game:
1. Spin the spinner-Each number is divided into 2 sections. The coloured section is positive( remember your number)
2.Spin again -the non-coloured spaces are negative
3. Add the two together, to make a positive or negative number. The sum is the number of spaces you move. If you on 1 and you get a negative number you stay where you are.
Question Marks ??
If you land on a question mark, your partner gets to ask you a question. If you get it wrong nothing happens. If you get it right, move forward the amount of spaces on the card.
Spaces Marked X
If you land on an X, your partner gets to ask you a question. Get it wrong, you miss a turn. Get it right, you stay where you are.
Winning
First Person to Reach the the 20th space wins!
There are the rules for Spin A Win!

Mr. B

Thursday, December 17, 2009
Hello Mr. B! Shaneille here, or Brink (because everyone seems to call me that)
We are missing you at at school. Without you we are learning about bites and bytes.
Math is no fun without you.

I am writing this post because everyone else has, and i don't want to be left out :( , no just kidding. Anyways I hope you are doing okay, we saw you the other day, just remember when you come back, "the class" will be waiting!


So I hope you will come to school tomorrow because " The class" has to wish you a merry Christmas! If you don't, we understand. So ya I wish you a merry Christmas and a happy new year.



Thanks for being a GREAT teacher. MERRY CHRISTMAS!

Question #16

Thursday, November 26, 2009
Hello, "THE CLASS" I am going to talk about Question #16.





Okay, so went over this in class, but in case you still don't understand I am going to explain.
So First you need to find how much cash Boris has.




So we know how much Boris has now, what about Charlie?



Alright Boris has $64, And Charlie has $19.20, and Anna has $ 25.60. The question asks us how much all three have together.


There a.) is Done HOORAY.

Now b.) the Question asks how much more money, Boris has then Charlie.

So here you need to subtract how much Boris has compared to Charlie. So $64.00 - $19.20= $44.20.

There is Question #16. Hope this made it clear. Please Comment!

Textbook Question #28

Thursday, November 5, 2009
Okay 905! I mean *the class* Here is question #28 in extend.




Okay so I'm going to do each letter separate.
So A) First you replace the Y's with -0.5 because it says that
y= -0.5.




Second. BEDMAS do the brackets 2x-0.5





Third. ADD.


YA one part done. Now B) First replace the M's, with 1.7



Second BEDMAS brackets first.





Third. Multiply.





Almost Done. C) First replace the Q's with -3.6


Second. First I thought that you subtract fractions, but then i remembered that we haven't learned how to subtract fractions THIS year yet.
So you divide the decimals. 4.5/ -3.6 - -3.6/4.5






Third. You subtract.



Okay so there it is. Sorry for it being so long. Comment please.

Rational Numbers

Monday, October 19, 2009
Our Next Unit Is Rational Numbers. What are they? How do we use them?

A Rational Number is any number that can be expressed as the quotient a/b of two integers.

So A number that can be a fraction, an example would be maybe



Natural Numbers are first they are numbers that we use everyday like 1,2,3,4,5,6,7

Then it is Whole Numbers 0 and Natural numbers.

Then Itegers which are Whole Numbers and their opposites eg. -3,-2,-1,0,1,2,3

Then it Rational Numbers itegers that can be expressed as fractions.

After that Irrational numbers, numbers that can't be expressed as fractions. Eg PI.

Ok so, I hope i covered some major things.

Question 11

Sunday, October 18, 2009
11. List places or situations in which surface area is important. Compare your list with those of your class mates.


1.) When designing clothes.

You need to know the measurements for the people you are making the clothes for.


2.) When wallpapering your wall/ or painting a wall.
You need to know the dimentions of the wall you are covering to buy the right side.


3.) When buliding a house.
You need to know the size of what you are building, so you can buy the correct amount of materials.


4.) When buying furniture.
You need to know the measurements of you room, to buy the correct size furniture.


5.) When designing shoes.

You need to know the size shoe you are making.

6.) When buliding a wall.
You need to know what the measurments are, also the surface area.



7.) When you are a Carpenter
You need to know surface area, of areas where you are expanding or doing work on.

8.) When you are a farmer.
You need to know the area of your field so you can buy seeds.

9.)When you are putting shingles on your roof.
You need to know the surface area of your roof.

10.) When you are landscaping your backyard.
You need to know the surface area of your yard, for the right amount of plants or grass.

11.) When you are wrapping gifts.
You need to measure how much wrapping paper it takes to cover the surface area of the present.

12.) When you are baking layered cakes.
You need to know the surface area of the first layer so you can make the next layer smaller, etc.

13.) When you are buliding a treehouse.
You need to know the measurements of the tree, plus the surface area of the house to make sure it will fit.

14.) When you are laying a floor.
You would need to know the surface area of the floor.

15.) When you are buliding a deck.
You would need to know the suface area of the spot where you are placing it.

Elegant Algebraic Equations

Elegant Algebraic equations.


I didn't know what Mr. Backe was talking about when he said Elegant Algebraic Equations. And thats what they are, the most elegant way to find the surface area of a shape. So im going to tell you the different formulas for different shapes.





S.A of a Cube 6s²


Say the cubes side lenght is 7


S.A 6s²


S.A = 6(7²)


S.A = 6(49)


S.A= 294 u²


A rectangular Prism

S.A 2(lw)+ 2(hw) + 2(hl)

S.A 2 (4)(6) + 2 (5)(6) + 2(5)(4)


S.A 2 (24)+ 2(30)+ 2(20)


S.A 48+ 60+40


S.A 148u²






Cylinder

S.A 2pi r² + 2 pi rh

S.A 2 (3.14)(5²) + 2(3.14)(5)(20)

S.A 2(3.14)(25)+ 2(3.14)(100)

S.A 2 (78.539) + 2 (314.159)

S.A 157.078 + 628.318

S.A 785.396 u²







Triangular Prism

2 Triangles bh ( don't put divided by 2 because bh/2 is for one triangle I am finding for 2)

2 triangles (15)(10)

2 triangles 150u²
base of prism lw

base of prism (15)(20)

base of prism 300u²

2 roofs lw

first we need the side of the roof.

a² + b² = c²

10²+ 15²=c²

100+ 225 = c²

(sqroot)325= (sqroot)c²

18.027 = c

2 roofs lw

2 roofs (20) (18.027)

2 roofs 360.555 u²

Add everything together.

150u² + 300u² + 360.555 u²=

810.555u²




Oct 7, 2009

Wednesday, October 7, 2009
Today in class we spent most of the time answering the homework from yesterday. First he gave us the side view, top view and front view. Then asked us to make the shapes. As Zerlina showed. Here are the answers.







Then we talked about the cylinder. I didn't get it at first, so Mr. Backe explained it to me.
Thanks for the picture Zerlina.
First you find the Surface Area of the Outside Cylinder.







Then you find the surface area of the small cylinder inside the big cylinder






Then you add the total of the first cylinder, and add the rectangle surface area of the small cylinder.


Then you minus the Surface area of the 2 circles from the small cylinder so 629.


Anyways so that's the first part. Of the class. For the rest Mr.Backe gave us 3 shapes.









HOMEWORK.
- Journal ..everyday.
- Surface area, and net for each shape above ^

I hope that made the cylinder clear to you. But if it didn't ask Mr. Backe.

For the next Scribe i pick Kristin. Please Leave a comment if i missed anything.

Why 360?

Sunday, October 4, 2009
Lots of people ask the same question. Why 360 degrees in a circle? Well it all started with the Babylonians. They used a base of 60, rather then 10 like we do. This system was called the Sexogonal System.


Another reason they used 360, was because 360 is divisible by A LOT of numbers for example 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30 and more. The Babylonians calender also was made up of 360 days, when the earth makes a complete rotation, a circle, so to the Babylonians it made sense for a circle to be 360 degrees.


So I hope that my post helped you understand 360. If I missed anything please comment.