Sunday, October 31, 2010

Jayvee's Math Profile

Hi, My name is Jayvee and I'm a grade 8 math student. If someone asked me if I like math, I would say of course. I like math because it's easy for me. All you have to do is memorize formulas and you'll do good on test and quizes. I remembered a time in grade 3 about decimals when we played games using decimals.

When I was in grade 7, The best unit I studied is integers because it's easy and I did good on test and quizes. The unit that made me struggle is algebra. I always get confused with the formulas. I will ask more often for help so I won't struggle to much this year.

To be a successful math student, I need to be a more active in class and responsible by asking questions to my teacher if I don't understand something. This year, I would like to learn more about algebra and things that should be learned in future grades.

Last year, I learned how to make a blog and this blog is about Areas. I think this is one of my favorites because I had a lot of pictures. Blogging helps me to remember if I forget math homework pages then I'll just check it on the blog. I want to do more blog this year so I can do scribes better.

Scribe 3 Show You Know Page 84 Page 85 Questions 3,7,12,14

Show You Know Page 84.
Determine the side length of a square with an area of 196 cm2.
196 cm2
/ \
14 x 14
/ \
7 x 2 x 7 x 2
7 x 2 x 7 x 2 = 196
14 x 14 = 196
142 (squared) = 196
or
square root of 196 = 14 (Sorry, I don't know how to put the square root sign)
The side length is 14cm.
Page 85: Questions 3, 7, 12, 14
3. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18 and 36. Use words and/or diagrams to explain how you know which factor is the square root of 36.
My answer: The factor which is the square root of 36 is 6, because 6x6 = 36, or 6 multiplied by itself equals 36.
If you want, you could use prime factorization to find the answer.
36
/ \
12 x 3

/ \
3x4 x 3
/ \
3x2x2 x 3
square root of 36 = 6
7. Write the prime factorization of each number. Identify the perfect squares.
a) 42
b) 169 169
/ \
13 x 13
c)256
/ \
128 x 2
/ \
64 x 2
/ \
32 x 2
/ \
16 x 2
/ \
4x4 x 2
12. Determine the square of each number.
a) 3(squared) = 9 / 3x3 = 9
b) 18(squared) = 324 / 18x18= 324
14. Determine the side length of a square with an area of 900cm2.
square root of 900cm = 30cm / 30 x 30 = 900
I am sorry for the lack of pictures, I had trouble uploading. I managed to upload one though. Also, if the spacing is weird, sorry for that too.
I found this video about prime factorization. Hope it helps anyone who was confused about it. I know it helped me. :)


Reminder: Tomorrow, we have a math quiz. It will be about square numbers, roots and perfect squares, if you have all textbook pages complete, you will understand what to do, the quiz will be based on them. Good luck! :)

Friday, October 29, 2010

Nikki's Sesame Street Video Post

Ratio

Two term ratios: compares two quantities measured in the same units
eg: triangles to circles 2:5

Three term ratios: compares three quantities measured in the same units
eg: triangles to circles to squares 1:5:3

Part to part ratio: compares different parts together
eg: triangles: rectangles 3:7

Part to whole ratio: compares one part to the whole group
eg: 1:34

RATE
Rate compares two quantities measured in different units
eg Tina can walk 100 steps/1 minute

Unit rate is when a second term is one
eg Tina walks 200 steps/2minutes

Unit price is a rate used when shopping
eg 0.99 c/ 100 g of rice

Proportional Reasoning
Proportional reasoning is when it says to rates or two ratios are equal
eg 2:4 1:2








Ryan Sesame Street Video Post

Ratio:
Two Term Ratio
- Compares two quantities measured in the same units
ex.
- a:b

- a to b
- a/b
- ab (Ratio Table)

Three Term Ratio

- compares three quantities measured in the same units
ex.
- a:b:c
- a to b to c
- abc (Ratio Table)

Rate:
- compares 2 quantities measured in different units
ex. $100/10 books

Unit Rate
- a rate in which the second term is 1.
ex. 20km/hr

Unit Price
- a unit rate used when shopping
ex.
$3/pizza pop

Proportional Reasoning:
- a relationship that says that 2 ratios or rates are equal
ex.
15 donuts/30 donuts are equal to 1 donut/2 donuts






Alec's Sesame Street Video Post

Ratio:
two term ratio- compare two quantities measured in the same units
example: a to b, a:b
three term ratio- compares three quantities measured in the same units
example: a to b to c, a:b:c

Rate:
compares 2 quantities measured in different units
example: km/h
unit rate- a rate in which the second term is one
example: 20km/h
unit price- a unit rate used in shopping
example- $5.99/100 gallon

Proportion:
- a relationship that says that to ratios or rate are equal



Sesame Street Video: The Ratio Song

Group: Cathlene, Olivia, Lizelle

Ratio - compares two or more quantities measured in the same unit
eg. apples to oranges, 2:3

Rate - compares two quantities measured in different units
eg. $8.00/ hr

Proportion - the relationship that says two ratios or rates are equal
eg. 1/2 = 2/4


This is the original video that we re-made.




This is our version of the video. :)

jocelyn,lara,lizelle sesame street video post

Lizelle , Lara and I ,
Choose this song to Cover .
http://www.youtube.com/watch?v=sU0MIJI-iio&feature=player_embedded
However , we Remixed this song to make it relate to math , Here is our Cover.
Singers: Lizelle And I ,
Camera Person: Lara .
http://www.youtube.com/watch?v=Fry15KMN_JM&feature=player_embedded

The Ratio Song

Group: Cathlene, Lizelle, Olivia

Rate- Compares two quantities in different units

Ratio - Compares two or more quantities measured in he same unit

Proportion - A part considered to the whole.



Glenn Sesame Street Video Post

RATIO
two term ratio- compares two-quantities measured in the same units.
EXAMPLE: a to b .. a:b
three term ratio- compares three-quantities measured in the same units.
EXAMPLE: a to b to c .. a:b:c

RATE
compares two-quantities measured in the different units.
EXAMPLE: 20 miles/ 5 hour
unit rate- a rate which the second term is one.
EXAMPLE: 5km/h
unit price- a rate used when shopping.
EXAMPLE: $5.99/500 gallons

PROPORTIONAL REASONING
proportion- s relationship that says that two ratios or two rates are equal.
EXAMPLE: 15 donuts out of 30 donuts are equal to 1 donut out of 2 donuts.

Errol's Sesame Street Video

A ratio compares two quantities measured in different units.
Ex. 3:12 three glasses of milk to twelve cookies

A rate compares quantities measured in different units.
Ex. 3/mph three miles per hour


Proportional Reasoning is a relationship that says that two ratios or two rates are equal.
Ex. 3/12 = 6/24



Grover is a doctor fixing an A.

Jocelle's Semame Street Video

RATIO :

Two Term Ratio - compares two quantities measured in the same unit.
Example - White Cookies: Blue Cookies
1:2

Three Term Ratio - compares three quantites measured in the same unit.
Example :
White Cookies: Blue Cookies: Pink Cookies
1:2:3

Part to Part Ratio - compares different parts of the group to the whole group.
Example: White Cookies:Yellow Cookies
1:7

Part to Whole ratio
- compares one part of a group to the whole group. It can be written in a decimal, fraction and percent.
Example: Purple Cookies : Total Cookies 8:21

Rate:

Rate- compares two quantites measured in different units

Unit rate- a rate in which the second term is 1

Unit price - a rate used when shopping

Proportional Reasoning :

Proportional Reasoning - a relationship that says that two ratios and two rates are equal. It can be written in a fraction form.



http://www.youtube.com/user/spmath789#p/u/4/r2vYfx5ff1w

Lara Lizelle Jocelyn Seasme Street Sing ,

This is the original video .
http://www.youtube.com/watch?v=sU0MIJI-iio&feature=player_embedded
And this is our cover version talking about how we can use songs to make help us study in math .
http://www.youtube.com/watch?v=Fry15KMN_JM&feature=player_embedded

Josell's Sesame Street Post

My group was made up of Melanie, Kristel, and Me.


Ratio
:

Two term ratio- compares two quantities measured in the same units.
ex. 2:3

Three term ratio- compares three quantities measured in the same units.
ex. 2:3:4

Part to part ratio- compares different parts of a group to another part of the same group.
ex. 4:2

This is a diagram
:



Rates:
rate- compares two quantities measured in different units.
ex. 2m/8hr

unit rate- a rate in which the second term is one.
ex. 3km/1m
unit price- a unit rate used when shopping.
ex.$4/5pencil

This is a diagram.



Proportional Reasoning:
-Is a relationship that says that two ratios or two rates are equal.
example- 1/2 = 2/4






This was the video that Melanie, Kristel and I were planning to do.






And.. This was our remake :) .. ENJOY.


Ishaka Sesame Street Video Post

My Math Group is Paulo, Roemer, and Me


RATIOS
Two Term Ratios
Compares two quantities measured in the same units.
Example: A:B 10:20 10 to 20
Three Team Ratios
compares three quantities measured in the same units.
Example: A:B:C 10:20:30 10 to 20 to 30

RATE
Rate
Compares two quantities measured in different units.
Unit Rate
A rate in which the second term is one.
Unit Price
A unit rate used when shopping.
Example: $10/ 3 chocolate bars.

PROPORTIONAL
Proportion
A relationship that says two ratios or two rates are equal.
Example: use it to find cost of 15 donuts if 5 cost $0.10
5/$0.10 = 15 / $x ; x = $0.30 (multiply 5 by 3 and $0.10 by 3)


Here is our math video part 1 and here is part 2

Thursday, October 28, 2010

Nicholas' Sesame Street video post


Here is my video

Nicholas's Math Profile

Hello my name is Nicholas and I am a gr.8 student at Sargent Park. If someone would ask if I liked math I would say no. I don't like math because I never get 100% and its hard to understand math. In gr.1, I remember adding and subtracting with skittles. I liked this activity because we got to eat the skittles afterwards!

Last year in gr.7, I liked doing fractions because it was one unit that was easy to understand compared to some of the other units. The unit I hated the most was algebra, I thought it was sometimes hard to answer most of the questions.

To be a successful student this year I will do my work. I will try to do my best to get good grades on my tests. This year I will try not to be lazy, do my work, and pay attention in class. I would like to learn more about algebra so I can improve on it.

Victoria's And Nikkis Sesame Street Video

This Is the original Video : http://www.sesamestreet.org/video_player/-/pgpv/videoplayer/0/3f4c0c9c-1548-11dd-8ea8-a3d2ac25b65b/it_s_hot_

This Is Our Made Video :
video

Nikki was actualy in the video you just dont see her :) .
If it dosent work its on our blogger on YOUTUBE.


Lizelle, lara, jocelyn' Sing Sesame Street Post.

This is the original video that Lara, Lizelle and I did. :




This is the remake that Lizelle, Lara and I did of the song 'sing' by sesame street.
We talked about proportion, rates, and ratios.






Thank you for reading, and watching. (:

Alec's Math Profile.

Hi, my name is Alec and I have grade eight math. I like math because it's my best subject. The best thing that I ever did in math class is playing a game like spinning a spinner to find the experimental probability.

Last year when I was a grade seven, the best unit I studied is integers because it's easy and I did good on quiz and test. The unit that made me struggle is fractions because I get sometimes confused on changing it to a mix number or to improper fraction. To not struggle much, I need to not talk much

I want to be a better math student. To do this I think I need to be a more responsible by asking questions to my classmates or teacher if I don't understand something. Also I need to pay more attention to what the teacher says and not to talk much about non related to the subject. This year I would like to learn about algebra.

In grade seven I learn how to create a blog. My favourite blog is about the best measure of central tendency. I picked this because i have a video and picture. I also picked this cause I think it's my best blog last year. The blogging help me become a better student because when I forgot the homework's page I can look at the blog and check it. This year I like to play a math game or a math problem in a computer because it helps me alot when I'm doing extra work.

Wednesday, October 27, 2010

Paulo's Sesame video post, rateproportionratio

Our group has Roemer, Ishaka, and Paulo


Part to Part Ratio:
Compares different parts of the group,to each other

Example: 25:15

Part to Whole Ratio:
a ratio or a fraction that represents a relationship between a part and its whole.

Example: 3:8

Ratio:
a comparison of two numbers by division

2 Term Ratio: Compares two quantities measured in the same units.

Example: 5 blue cars: total cars

3 Term Ratio:
Compares three measured in the same units.

Example: 5:15:30

Rate: Compares two quantities measured in different units

Example: 3 laps/mins

Unit Rate:
ratio of two measurements in which the second term is 1.

Examples: $180 in 20 hours

Proportional Reasoning: relationship that says two ratios are equal.

Example: sugar1/lemon1=sweetness1


Unit Price:

unit rate is essentially a ratio used to compare a quantity to the way it is being measured

Example: 2 liters= $1.90 per liter


The video we did was Grover reacting the Old spice commercial there is a part 1 and part 2.




Nikki Shannon's Math Profile

Hello my name is Nikki Shannon. I am currently in grade 8 and I am not maths #1 fan. If i had a choice to do math I would probably say no. I don't really know what was the best thing I did in math class.

The thing I was best at in grade 7 was probability. I thought it was the easiest of all units. The unit that i struggled with was integers. It confused me with the minus and plus adding and subtracting with the integers.

Now that i made it to grade 8, i would like to learn more algebra. I know a little about it and I want to learn more.Another thing I am looking forward to learn is a bit more of fractions.

Well... I did comment on most of the blogs but I regret never creating a post. I was assigned to do it a couple of times but I really didn't understand it.

Karen's Scribe Post



Prime Factorization is also a way
to find out if a square is perfect or not.





Square root is the inverse (opposite) of squaring, for example:
5² = 5x5 or 25
√25 is 5 times itself has a product of 25
5x5=21 || √25=5

Yesterday's Homework
Estimating in Fractions
1: 1
√2: 1 1/3
√3: 1 2/3
√4: 1 3/3 = 2
√5: 2 1/5
√6: 2 2/5
√7: 2 3/5
√8: 2 4/5
√9: 2 5/5 = 3
√10: 3 1/7 ...

See any patterns? The denominator is how many spaces are in between the 2 closest perfect squares. The numerator is how many spaces the square root number took going to the left.


√39 \approx \!\, 6 3/13;6.24 x 6.24
√200 \approx \!\, 14 4/29; 14.14 x 14.14
√850 \approx \!\, 841 10/59; 29.15 x 29.15

Today's Homework
(This part gets confusing but I'll try to explain it as good as I can)
- make another number line with 1 to 25 square root numbers with one and a half (1 1/2) intervals
- write the fraction x fraction = 1-25
- on the bottom, write the decimal that is almost equal to 1, 2, 3, ... 25
- lastly highlight or box the perfect square numbers
* Don't forget to use ' \approx \!\, ' the almost equal symbol.





Tuesday, October 26, 2010

Jocelle Garcia's scribe post


Tell me everything you know.

1 , 1 x 1 = 1 , perfect square

2 , 1.41 x 1.41 = 2 , not a perfect square
3 , 1.73 x 1.73 = 3, not a prefect square
4 , 2 x 2 = 4, perfect square
5 , 2.23 x 2.23 = 5, not a perfect square
6 , 2.44 x 2.44 = 6 , not a perfect square

7 , 2.64 x 2.64 = 7 , not a perfect square

8 , 2.82 x 2.82 = 8 , not a perfect square

9 , 3 x 3 = 9 , perfect square


Square root is the inverse of squaring

5² = 5 x 5 or 25
√25 is WHAT times it self ?
has a product of 25
5 x 5 = 25 || √25 = 5

*Opposites *

+ addition , - subtraction
x multipication , ÷ division
x² squared , square root


NOTES :
  • Use fractions to show the estimated √ ( square root ) between 1-23
  • How can you use " perfect squares " to estimate 's ?
√39 √850 √200







Monday, October 25, 2010

Lizelle Scott's scribe. (:

Today, we learned and we checked over that paper that we made a number line and we showed our the square numbered. ( I would draw it for you, but it's so dufficult with this laptop. ):

Today we learned more about squared numbers, and we just started to learn about squared roots. YAAAY. :D

Today, we tried to make a square with 8 tiles. We failed, miserably. ):
Why did we fail miserably?

Because, It was a very dufficult number.

We tried MANY combinations of numbers,
like ,
2.75
2.3
etc.


Until, Mr.Math ( Tyler ) figured out that, this square root button will find it.
[ this is a picture of, YOU GUESS IT. A square root sign. (: ]
Soo, we did this.

8,
and the answer on my calculator which is:
2.828427125

So let's 2 ( also known as squared.) it.

2.828427125x2
OR also known as, 2.8284271252 = 8
So we would need: 2.828427125 tiles to make a PERFECT square.
Dufficult , huh.


Well after that, you folded your number line, and we had to write this. :

_____ is a squared number.

The answer to that blank is : 16.

4x4= 16
.
don't you just love how it's so HUMONGOUS. - I did that, because this is important information.


You also had to put :

42 is a 16 or a square number.


For room 8 16, and for the other classes as well you had to

Tell me everything you know me about the squares.

1 2 3 4 5 6 7 8 9

TELL ME EVERYTHING YOU KNOW. :D



Your jobs are :

Job 1 - Get sheet. (white paper sheet, long thinga magig. )
Job 2 - number line, the perfect square.
Job 3 - Fold, and write what you know.


Well thank you for reading my scribe, I really appreciate it. (: