Scribe Post for March 23, 2009

Yesterday in class, we started off with "Number of the Day". The number of the day was 8756.934. Then we took some notes on perpendicular bisector and angle bisector.

Here are the notes:

Bisect: -Bi means "two"

-sect means "cut"

-so bisect means to cut in two

Perpendicular Bisector

A line that divides a line segment in half and is at right angles to it

eg.

How can you create or draw a perpendicular bisector?

1. Free hand, o.k. but not perfect

2. Protractor gets us 9o degree angle

-Ruler cuts line in half

eg.

3. Use a compass and create arcs
eg.

a) Open compass to greater than half the distance of line

b) Place compass on point A, draw an arc

c) Place compass on point B, draw an arc

d) Use a ruler to connect the intersections of the arcs that line is a perpendicular bisector

Angles

Angle: the figure formed by two lines with a common endpoint called a vertex

eg.

Acute angle: less than 90 degrees

eg.

Obtuse angle: more than 90 degrees

- less than 180 degrees

eg.

Angle bisector: the line that divides an angle into two equal parts

eg.

How do we make an angle bisector?

1. Free hand not perfect not accurate enough

2. Protractor

eg.

3. Compass

eg.

a) Arc from vertex

b) Arc from point S (intersection of line and arc)

c) Arc from point T (intersection of line and arc)

d) Line from arc intersections to vertex that is your angle bisector

After taking down all the notes, we worked on page 116-121 (Math Links)

I pick Telissa to do the next scribepost

Scribe Post for March 20, 2009

BY Devin

On Friday we started with ''number of the day" and the number we did was "4792.831".

After Number of the Day, we did notes on

These are the notes

parrallel-describe lines in the same plane that never cross or intersect

-they are marked using arrows

'

perpendicular- describes lines that intersect at right angles(ninety degrees)

-they are marked by using a small square

I chose Alex to do the next scribe post

Scribe Post for March 17,2009

Today in class the number of the day is 1936.295 so you all know that it's homework.

In math class we were taking notes about Area.
So for now I don't even know how to put drawings or pictures in the post so sorry guys.

Now I'm going to tell about area.

Area is the number of square units contained in a two dimensional region

Parallelogram - a four sided figure with opposite sides parallel and equal length

Base - A side of a two dimensional close figure
- common symbol is b

Height - the perpendicular distance from the base to the opposite sides.
- common symbol is h

Perpendicular - A line that meets another line at a right or 90 degree angle.

Those were the notes we have taken.

Here's a video about Volume (L x W x H) oh and if the link ain't working then press ctrl + left click

I choose Alex to be the next scribe post

Scribe Post for March 13, 2009

Today at school we started with the Number of the day. For those who were away the number is 2468.135. Remeber number of the day is ALWAYS homework!

1. Half of the number of the day is:
2. Write the number of the day in expanded form:
3. Write the number of the day in written form:
4. Round the number of the day to the nearest 100:
5. What number is in the tenths place:
6. The number of the day doubled is:
7. Write the number of the day in expanded notation:
8. Write a power using the number in the 100th place as the base and the number in the 10s place as the exponent:
9. Write the above power in factored form:
10. Cube the number in the ones place:
11. Square the number in the hundreds place:
12. Divide the number by 3.55 and round to the nearest hundredth:
13. The product of all the numbers in the number of the day is:
14. List all the prime numbers in number of the day:
15. Write the number of the day in scientific notation:
16. The whole number is divisible by (circle): 2, 3, 4, 5, 6, 8, 9
17. Combine the numbers in the 1s place and the 10s place respectively to make a two digit number and write the prime factors:
20. Write a fraction using the 1000s place as the denominator and the tenths place as the numerator:
21. Use any two numbers to make an improper fraction:
22. Use any of the numbers to make a mixed fraction:
23. Write the answer to number 22 as a decimal:
24. Draw a picture to represent the answer to number 22:
25. Write the answer to number 21 as a percent:


We also took notes on Still More Probability.

Random- an event in which every outcome has an equal chance of occuring.

Experimental probability- the probability of an event occuring based on experiment results.

Theoretical probability- the expected probability of an event occuring.

e.g. flipping a coin
Theoretical probability Experimental probability
5 heads, 5 tails heads 1,6, 5 tails 7, 4, 5
favourable over possible do the experiment

The larger or more trials in an experiment the closer experimental probability gets theoretical probability.

After that we took out our Maths links text book. We worked on page 180 and number 1 to 11.

Thank you for reading my scribepost.
I choose DEVIN to do the next blog.

Probability tree and table

In class today we had to do a tree diagram to solve the answers to Page 168 from 2 to 14. We also kinda learned how to use a table diagram as well.

Here is an example of a tree diagram and a table diagram

ScribePost for Febuary 20, 2009

Today we started of by Number of the day 6918.205, as usual .

Then Mr. Isfeld gave us back our Algebra test from yesterday and told us it was a practice test. So then we corrected it.

*Opposites: Addition-> Subtraction. Multiplication -> Division.

Practice Test.

1. a+5=11
a+5-5=11-5
a=6

2. b-3=7
b-3=3=7+3
b=10

3. c/5=25
5xc/5=25x5
c=125

4. 6d/6=30
d=5


5. 7e+8=29
7e+8-8=29-8
7e/7=21/7
e=3

6. 2f-2=8
2f-2+2=8+2
2f/2=10/2
f=5

7. g/3+2=7
g/3++2=7-2
g/3=5
g/3(3)=5(3)
g=15

8. h/4-3=2
h/4-3+3=2+3
h/4=5
h=20


9. 4x+2+3x=9
7x+2=9
7x+2-2=9-2
x=11

VERIFY

1. a+5=11
6+5=11
11=11

2. b-3=7
10-3=7
7=7

3. c/5=25
125/5=25
25=25

4. 6d=30
6(5)=30
30=30

5. 7e+8=29
7(3)+8=29
21+8=29
29=29

6. 2f-2=8
2(5)-2=8
10-2=8
8=8

7. g/3+2=7
15/3+2=7
5+2=7
7=7

8. h/4-3=2
20/4-3=2
5-3=2
2=2

9. 4x+2+3x=9
4(1)+2+3(1)=9
4+2+3=9
6+3=9
9=9

10. There are two more than twice as many dogs as cats in the vet. If there are six cats, how many dogs are all in the vet? Show all your work including the equation and verify and answer in a sentence .

6 Cats
6x2+2=d
12+2=d
14=d

Verify
6x2+2=d
6x2+2=14
12+12=14
14=14

There are 14 dogs in the vet.

Then when we were done correcting the practice test. He gave us another question like that to answer:
There are 2 more than half as many boys in class as girls. If there are 12 girls. How many boys are there? Show work.

12G/2+2=b
6g+2=b
8=b

Please comment and see how you think of it :) enjoy . I know its not the best :)
I choose GILBERT for the next Scribepost.

ScribePost for Febuary 19, 2009

Today we had to do "Number of the Day" then we had to do a Test on Algebra.

After we finished the test we had to do a balance.

The total was 50.

As you can see we didn't do very much but we still had to do something.

I would put a video,

but my computers not letting me so sorry.

Please comment and i hope you enjoyed it.

I choose Stephanie to do the next Scribepost.

scribepost for february 11

Today in class we started with the test that is about transformation, coordinates, quadrants, adding, subtracting, multiplying, dividing, BEDMAS, fractions, decimals, percent, pattern, and algebra.

When everybody is done they have to do number of the day which was 1359.248.

After that, some of the students that are done doing the test and the number of the day did the balancing act:

Then Mr. isfeld gave us an algebra question which was 4y+12-2y+16=y+2

PLEASE LEAVE A COMMENT!!!

i choose binesi to do the next blog...

Scribe Post for February 10, 2009

We started off our class by doing Number of the Day. The number of the day was 7214.586. After that, we handed in our number of the day booklets for a check. We also got a chance to catch up on our provincial folder worksheets.

Some examples of the worksheets we had to finish are:


-Find as many ways as you can to represent 3/4, 1.25, etc.


-Match the correct fraction to the correct picture


-Order the fractions from least to greatest or greatest to least





Today's homework is to write an algebraic equation and solve it, for the following statement:


Daylon talked for 45 minutes in today's class. How many minutes did he work?





Make sure you study for the term test tomorrow. The test is going to be on everything we have learned since the beginning of the year, from rounding numbers to solving algebraic equations.





I choose Althea to do the next scribepost.

Scibepost for February 2, 2009

Today our class started with Number of the Day which was 2857.236( two thousand eight hundred fifty seven and two hundred thirty-six thousandths ) . Then we did some of the matching fractions and understanding fractions.

And we have this homework:

1. A+7=10
2. 7+A=10
3. B-4=3
4. 4-B=3
5. 4c=12
6. c4=12
7. d/2=7
8. 2/d=7

I choose Joshua to do the next scibepost.

Scribe Post for January 30, 2009

Today in math, our class started off with Number of the Day which was 2 969.402

After that, Mr. Isfeld asked about our Gr. 8 algebra homework:

1. 6 - 3x = -6
2. 5x / 4 + 3 = -7
3. x / 5 = -3 / 4

These are pretty hard questions to answer so Mr. Isfeld told us steps to answer them.

Step # 1

Take away not needed numbers by doing their opposite operation so you can cancel them out and what you do to one side of the equal sign you do to the other.

Step #2

Answer anything you can solve.

Step #3

Find what the letter is.

After finding everything, verify by writing down the equation and then replacing the letters by the answer.

Here are some of the practice questions Mr. Isfeld gave us:

1. b - 2 = 4

b -2 + 2 = 4 + 2
b = 6

Verify

b -2 = 4
6 - 2 = 4
4 = 4

2. a + 3 + a = 5

a + 3 - 3 + a = 5 - 3
a + a - 2
2a / 2 = 2 / 2
a = 2

Verify

a + 3 + a = 5
1 + 3 + 1 = 5
4 + 1 = 5
5 = 5

3. 3d = 9

3d / 3 = 9 / 3
d = 3

Verify

3d = 9
3(3) = 9
9 = 9

4. 4 / f = 4

4f / 4 = 4 / 4
f = 1

Verify

4 / f = 4
4 / 1 = 4
4 = 4

After doing the algebra, our provincial folders got handed back to us and we finished doing our worksheet about ordering fractions and decimals in ascending (least to greatest) and descending (greatest to least) order. We also had to put down a goal about ordering the fractions.

I choose Razel to do the next scribe post.

Scribe Post for January 29 2009

Today in class we started with number of the day which the number was: 1245.839(Onethousand twohundred fourty-five and eighthundred
thirty-nine thousanths) and went into a test on the 'Balancing Act'

I made a sample picture for people who would like to see how it was . We also did a easy algebra question .

Thanks for reading my Scribepost please look for tomorrows scribepost!
I choose ELAINE !! to do the next scribe post (:

Scribe post january 28 2009

Today's class we worked on number of the day, 1269.584

Then Ordering Fractions Strategies.

1. Using landmarks, landmarks are things everybody should know.

eg. Let's meet at polo park.

I live near the forks.

bold words are landmarks

Fraction landmarks include:
1/10, 1/5, 1/4, 1/3, 1/2, 2/3, 3/4, 1/1

Practice: which is larger 11/15 or 7/10

Using our second strategy finding common denominators we see that 11/15 equals 22/30 and 7/10 equals 21/30. There for 11/15 is greater.

Third startegy is converting to decimals. Decimals are always over or out of one. So we follow the same steps as equivalent fractions only this time our equivalent fraction must be over 1.

For example: 3/5 converts to 0.6/1. We must divide 5 by 5 to have a denominator of 1. Therefor we must also divide the numerator by 5. So we get 3 divided by 5 equals 0.6

Things to remember a fraction is a part of a whole.

The line seperating the numerator and denominator means divided by.

I choose Jazzy as the next sribepost!

Scribe Post for January 26, 2009

In today's class we did Number of the Day . Today's number was 3269.148 .

After Number of the Day , we did a balancing act .
The total for today's balancing act is 48 .
Here is a picture for the people who didn't
have enough time to draw it down .











We also worked on our provincial folders .

We had to order fractions from ascending and descending .

ascending - to order numbers least to greatest .
descending - to order numbers greatest to least .

I choose Robert to do the next scribe post

Scribe Post For Jan 23

Today in class we had to go over yesterdays homework.

The homework was the balancing act.

It looked like this:

The total for the whole balancing act is 160.

Here is the answer for the people who

didn't get a chance to write it down
during class.

Also, today we started our provincial folders.

For the first segment of proof that we had to put in our folders

were ordering decimals.

eg. Put the following decimals in order from least to greatest.
1.3 0.9 0.2 0.8 1.2 1.6 1.8 0.1

In order the numbers would be:

0.1 0.2 0.8 0.9 1.2 1.3 1.6 1.8

If you got something like this right on the sheet you would have to give yourself one check mark and put the date next to it. if you didn't get to put any check marks on your sheet, you would have to come another day and try to get it right a second time.

I choose Kevin to do the next scribe post.

Scribe Post For January 22, 2009

Today at Math class, my class had a test ! The test had 42 questions and it was about percent, decimals, fractions, outliers, range, mean, and mode. After the test, we had to do Number of the Day. If we finished Number of the day and still had some time, we had to do a balance question. It looked like this :

Sorry if I made some mistakes in the picture. Those looked like the shapes that I copied down.

After that, we corrected our tests. That was pretty much what happened in Math today.

Here is a Math video. It is called Mathmaticious ( Math-ma-tish-iss ). This video is about math and it has the tune of Fergie's song called Feralicious. I put this video on the blog because it's funny and it mentions some math that we have been doing. The video actually starts at 30 seconds. I hope you like it.

Thank you for visiting my scribe post! I hope you liked it !

The person to do a scribe post next is .......

Argie G ! YAY ! xD

scribepost jan. 22

Today we did math link page 437-439 1-16We have a Quiz tommorow jan 22 2009 its about

decimals/fraction/percents/mean/median/mode/range/outlierThis could help you for the test tommorow

Decimals-A linear array of digits that represents a real number, every decimal place indicating a multiple of a negative power of 10. For example, the decimal 0.1 = 1/10 , 0.12 = 12/100 , 0.003 = 3/1000 . Also called decimal fraction.

Fraction- a number expressed as a quotient, in which a numerator is divided by a denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator. If the numerator is greater, it is called an improper fraction and can also be written as a mixed number — a whole-number quotient with a proper-fraction remainder. Any fraction can be written in decimal form by carrying out the division of the numerator by the denominator. The result may end at some point, or one or more digits may repeat without end.

Percent-, a quantity can be increased by any percentage but cannot be decreased by more than 100 percent. Once pollution has been reduced by 100 percent, for example, it ceases to exist. In defiance of this logic, however, advertisers sometimes refer to a 150 percent decrease in lost luggage or a new dental rinse that reduces plaque on teeth by over 300 percent. Presumably what is implied by the latter is that the new rinse is three times as effective as some other rinse, but such constructions are still subject to criticism as illogical.·Percent can take a singular or plural verb, depending on how the quantity being described is viewed. Very often what determines the form of the verb is the noun nearest to it. Thus one might say Eighty percent of the legislators are going to vote against the bill or Eighty percent of the legislature is set to vote the bill down. In the second sentence the group of legislators is considered as a body, not as individuals. When percent is used without a following prepositional phrase, either a singular or plural verb is acceptable.

Measures Of Central Tendancy

mean- The MEAN is the arithmetic average, the average you are probably used to finding for a set of numbers - add up the numbers and divide by how many there are:Eg(80 + 90 + 90 + 100 + 85 + 90) / 6 = 89 1/6.

mode-The mode of a set of numbers is the one that occurs most often. So, in the set {1,5,7,5,9}, the mode is 5 because there are 2 fives and only one of each of the others.Now here is a problem for you: Find the mode of this set of numbers:2 6 9 0 5 2 4 1 6 4 5 2

median- Median is the middle value of the given numbers or distribution in their ascending order.Median is the average value of the two middle elements when the size of the distribution is even.

Range-Example 1:The Jaeger family drove through 6 midwestern states on their summer vacation. Gasoline prices varied from state to state. What is the range of gasoline prices?$1.79, $1.61, $1.96, $2.09, $1.84, $1.75Solution:Ordering the data from least to greatest, we get:$1.61, $1.75, $1.79, $1.84, $1.96, $2.09highest - lowest = $2.09 - $1.61 = $0.48Answer:The range of gasoline prices is $0.48.

Outliers- For a set of numerical data, any value that is markedly smaller or larger than other values. For example, in the data set {3, 5, 4, 4, 6, 2, 25, 5, 6, 2} the value of 25 is an outlier.I


PICK BRENDAN!!!!!!!

Scribe Post for January 20, 2009

In class today we learnt from our abusive math teacher (Do'nt hurt me) He decided to let someone not so abusive teach us named Mr.Piliske .Mr.Piliske taugh us today to play a game in this game everyone has a card . On that card there was either a equivalent fraction , Percent, Improper Fraction, or a Picture Representation.

Eg.

I have two and a half 2 1/2. Who has an picture representation of one third ?
I have one third who has Equivalent fraction of 0.25? I have 1/4 .Ext....


After that our abusive teacher assigned us to do some textbook work on page 437 starting at number one going on to whatever number we could possibley get to before the class was over.

Here are all of the questions on page 437 :

1)In you words explain what a range and a outlier is?
Your Answer Here!

2)How can you determine the smallest value in a data set if you are given the range and the largest value? Use an Example to explain your response.
Your Answer Here!

3)What is the range forthe data set of:

a.11,8,7,10,6,5,18,13
b.4,-5,3,-2,0,7

4)Determine the range of each set of data:
a.16,11,7,29,31,18,21,18
b.7,1,-1,-2,9,-7,4

5) Leanne timed how long she could hold her breathe under water.She recorded the following timings,in seconds:47,55,42,65,61
What is the Range of the data set above

6)What value(s)appear to be outliers in each data set:
a.6,9,9,37,8,7
b.24,34,46,26,32,43,115
c.48,32,67,61,47,95,89,888,1

7)Identify any possible outliers in each set of data
a.666,11,9,12,8,13,10
b.43,54,62,64,0,211,45
c.82,,75,7685,89,95,92,88,80


and the next person to do the Scribe post will be....... Aldrine(Muahahaha):P

Scribe Post for January 16, 2009

In class the other day we learnt from our super "cool" math teacher . We started class by doing our number of the day, then isfeld put this on the overhead

Total is 80. 1 shape weighs more than

9

It was kind of tough to figure out, but after about 10-20 minutes, we figured it out all together. and this is what we came to.

For the next person to write a blog i chose ..... TAYLOR :D

Congrats to All of You! :D

Great job you guys!

It has only been 2 days since you were taught how to use Blogger (better), and you guys are using those notes pretty fast. It's also nice to see that a lot of people are leaving comments behind. Keep it up! If you do, we'll hopefully see more visitors checking out our blog (by looking at the Cluster Map). I'm sure that Mr. Isfeld and Mr. Harbeck are also very proud of you all.

Keep up all the great work!
Melanie, Zerlina and Elmane
Mr. Isfeld and Mr. Harbeck
Other Visitors