Today's Slides: December 21
Here they are ...
Happy Holidays!
Arthur Benjamin: Lightning calculation and other "Mathemagic"
Ron Eglash: African fractals, in buildings and braids
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Friday, December 21, 2007
Happy Holidays!
Arthur Benjamin: Lightning calculation and other "Mathemagic"
Ron Eglash: African fractals, in buildings and braids
Thursday, December 20, 2007
December 20 , Scribe Post
In our math class we started mental math first thing as always. Also we marked each others papers. Usually Mr Kuropatwa explains all the mental math questions on how to do them in a helpful way And if u still don't understand the question he will try and explain it again bit by bit or making it more easier to understand. After the mental math questions Mr K put us in groups. I was number 3 but moved to 4 =S. Anyways he put us in groups because its better to find out what other people have for the answers to the booklet. There are many ways to answer a question. Like different kinds of answers that u don't even know about that other people do. It is helpful to people if they don't understand the question or if they do understand the question they might want to know what new things on other peoples minds. And you even get to make new friends :D If we didn't do our homework then we had to do it in class.
There is one question i didn't understand in the booklet. How to find the perimeter of a Parallelogram like how to add 5 1/2 + 91/4 + 6 3/8= ????
I just cant wait till tomorrow. 1 MORE DAY TILL THE WINTER BREAK =D OHHHHHYEAAAA!! Merry Christmas and Happy New Year Everyone!! =D
Next scribe will be : Jonathan
There is one question i didn't understand in the booklet. How to find the perimeter of a Parallelogram like how to add 5 1/2 + 91/4 + 6 3/8= ????
I just cant wait till tomorrow. 1 MORE DAY TILL THE WINTER BREAK =D OHHHHHYEAAAA!! Merry Christmas and Happy New Year Everyone!! =D
Next scribe will be : Jonathan
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Imperial and Metric Measurments
Hi class, today we did we leaned about imperal and metric measurment we also did mental math as we amost always do it was mostly about precents that we already finshed in our booklets then we went back to imperial measurment and Mr K some students to try to figure out where to put the measurments using arrows.If any of you have problems in math you sould really see Mr K or any qustions and get some help right away the exam is coming.That is it for today see you all in class.
Cait.
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Wednesday, December 19, 2007
December 19, 2007 Scribe
Well first off, today, we started by coming into the class and chatting to Friends that sit near us. We stood for O' Canada and sat back down. Today we don't starting a mental math .In our class we did a sort Quiz in class.We learn how to measure a screw, clock diskette wrench and pencil. Mr.K show us how to measure this staff. In the other day is i learn how to used the formula
next scribe is justin
next scribe is justin
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Tuesday, December 18, 2007
Monday, December 17, 2007
Friday, December 14, 2007
Thursday, December 13, 2007
December 13, 2007 Scribe
Holy, how time flies! This is my second scribe post since September 10th. So, I might not be doing this as well as others.
Well first off, today, we started by coming into the class and chatting to the people that sit near us. We stood for O'Canada and sat back down. Class started with Mental Math, as usual. Remember, if you got something wrong, you should come back to the Blog and see where/how you got the question wrong. Everyone should be getting 9 or 10's!
After the Mental Math, Mr. Kuropatwa asked us if we liked working in groups or solo. With the awesome response he got, we were divided into groups and worked on many questions. We basically worked on Perimeter/Circumfrence and Area questions.
Right at the end of class, we quickly looked at the formulas for Surface Area and Volume.
FORMULAS
PERIMETER/CIRCUMFRENCE
Triangle: P = a+b+c
Rectangle: P = 2 (L+W)
Square: P = 4s
Circle: C = πd OR C = 2πr
AREA
Triangle: A = 0.5bh
Rectangle: A = LW
Square: A = s2
Circle: A = πr2
Well first off, today, we started by coming into the class and chatting to the people that sit near us. We stood for O'Canada and sat back down. Class started with Mental Math, as usual. Remember, if you got something wrong, you should come back to the Blog and see where/how you got the question wrong. Everyone should be getting 9 or 10's!
After the Mental Math, Mr. Kuropatwa asked us if we liked working in groups or solo. With the awesome response he got, we were divided into groups and worked on many questions. We basically worked on Perimeter/Circumfrence and Area questions.
Right at the end of class, we quickly looked at the formulas for Surface Area and Volume.
FORMULAS
PERIMETER/CIRCUMFRENCE
Triangle: P = a+b+c
Rectangle: P = 2 (L+W)
Square: P = 4s
Circle: C = πd OR C = 2πr
AREA
Triangle: A = 0.5bh
Rectangle: A = LW
Square: A = s2
Circle: A = πr2
Parallelogram: A = bh
Trapezoid: A = 0.5(Base 1 + Base 2)h
SURFACE AREA
Rectangular Solid: SA = 2WH+2LW+2LH
Sphere: SA = 4πr2
Cone: SA = πrs (Slanted Sides Only)
Cylinder: SA = 2πrh+2πr2
Pyramid: SA = Area of Base + Perimeter of Base x Slant Height
Trapezoid: A = 0.5(Base 1 + Base 2)h
SURFACE AREA
Rectangular Solid: SA = 2WH+2LW+2LH
Sphere: SA = 4πr2
Cone: SA = πrs (Slanted Sides Only)
Cylinder: SA = 2πrh+2πr2
Pyramid: SA = Area of Base + Perimeter of Base x Slant Height
VOLUME
Rectangular Solid: V = LWH
Sphere: V = (4/3)πr3
Cone: V = (1/3)πr2h
Cylinder: V = πr2h
Pyramid: V = (1/3)b2h
Anyways, CHRISTMAS IS 7 DAYS AWAY! =D and The Next Scribe Will Be: Cait ;)
Merry Christmas and Happy New Year! =D
Cylinder: V = πr2h
Pyramid: V = (1/3)b2h
Anyways, CHRISTMAS IS 7 DAYS AWAY! =D and The Next Scribe Will Be: Cait ;)
Merry Christmas and Happy New Year! =D
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Wednesday, December 12, 2007
Tuesday, December 11, 2007
Monday, December 10, 2007
Sunday, December 9, 2007
The Parthenon
I thought you all might be interested in this:
We were talking about ratios and the number φ (phi), the Golden Ratio, last week. We also talked about how deeply it's tied to our unconscious appreciation of things that are beautiful. I came across this 7 minute video (below) that tells something of the story behind the construction of The Parthenon. You can also read on wikipedia about how φ was integrated into it's design. You can also browse this site which is dedicated to exploring all things about the Golden Ratio.
The Parthenon
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Thursday, December 6, 2007
Blogging on Blogging
It's meeeeeeeee. . . againnnn
In this section of Math, I found quite a lot of things interesting. However, one thing that has stuck with me was how you calculate the HST in the Atlantic Provinces.
Step 1: Look at the question. Does it have any Discounts or Other Items (More than one)
What is the total cost, including tax, of the socks and underwear, if the socks are $8.49 and the underwear is $14.88? There is a 20% discount on the items as well.
Step 2: If there are more than one item, add the items together. (If not, ignore this step)
$8.49 + $14.88 = $23.37
Step 3: If there is a discount, multiply the decimal form of the discount by the cost of the item(s), then subtract it from the cost of the item(s). (If no discount, ignore this step)
20% = 20 / 100 = 0.20
$23.37 x 0.20 = $4.67
$23.37 - $4.67 = $18.70
Step 4: Take the Sale Price (Cost after Discount) and multiply it by the decimal form of the HST.
14% = 14 / 100 = 0.14
$18.70 x 0.14 = $2.62
In this section of Math, I found quite a lot of things interesting. However, one thing that has stuck with me was how you calculate the HST in the Atlantic Provinces.
Step 1: Look at the question. Does it have any Discounts or Other Items (More than one)
What is the total cost, including tax, of the socks and underwear, if the socks are $8.49 and the underwear is $14.88? There is a 20% discount on the items as well.
Step 2: If there are more than one item, add the items together. (If not, ignore this step)
$8.49 + $14.88 = $23.37
Step 3: If there is a discount, multiply the decimal form of the discount by the cost of the item(s), then subtract it from the cost of the item(s). (If no discount, ignore this step)
20% = 20 / 100 = 0.20
$23.37 x 0.20 = $4.67
$23.37 - $4.67 = $18.70
Step 4: Take the Sale Price (Cost after Discount) and multiply it by the decimal form of the HST.
14% = 14 / 100 = 0.14
$18.70 x 0.14 = $2.62
Step 5: Take the Tax and the Sale Price and add the two together. It will give you the Total Cost of the item.
$18.70 + $2.62 = $21.32
Step 6: You are completely done the question and you got very pricey socks and underwear ;) (But Holy God, that must be some pretty good socks and underwear)
Remember that if you are finding PST and GST, DON'T combine the two taxes when you calculate them. LEAVE THEM SEPARATED OR CONCEQUENCES WILL BE WAITING.
Remember to study and then we can all have a Britney Spears party =O If you don't study, cellulite will haunt you forever =OO
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Blogging on Blogging ;D
Consumer Decisions
I learned a lot in this unit. This unit helped me gained more knowledge about taxes and sales. In real life, my mom asked me how much this jacket at GAP was. I told her the right amount with the 25% off sale and the PST and GST. When we went to the cashier, I was right. =) I felt so proud of myself.
Before I never knew about how to do all these taxes and sales. But I'm so happy I learned about it. This unit really helps me a lot especially in real life.
We learned about finding the unit price of one. Like for example,
At a fruit and vegetable stand, a dozen apples sells for $2.50. What is the price of one apple?
$2.50 / 12 = $0.21
So the unit price of one apple is $0.21
Then we learned about GST, PST, HST.
GST stands for Goods and Services Tax
PST stands for Provincial Sales Tax
HST stands for Harmonized Sales Tax. Harmonized Sales Tax is a combination of federal and provincial tax.
Here is an example of how to find GST and PST.
A customer purchases a new suit. The price of the suit is $285.00. What is the cost to the customer after GST and PST are added? The suit is purchased in Ontario.
Price of suit is $285.00
Now find GST and PST by converting the percent to decimal place. A reminder that PST in Ontario is 8%
GST - 6% / 100 = 0.06
PST - 8% / 100 = 0.08
Now multiply the price of the suit with the GST and then PST.
GST - $285.00 * 0.06 = $17.10
PST - $285.00 * 0.08 = $22.80
Now add the taxes together.
$17.10 + $22.80 = $39.90
Now add the price of the suit and the total taxes.
$285.00 + $39.90 = $ 324.90
And now, your done =)
Now here is an example of calculating HST.
Paul went to an electronic store and bought a CD player advertized at $450.00, a set of speakers at $235.00, and a portable telephone at $189.00. How much did he have to pay altogether including taxes? He bought these items in Nova Scotia.
Add all the prices together first.
$450.00 + $235.00 + $189.00 = $874.00
Now find HST of the total price of all the items that is being bought. HST in Nova Scotia is 14%
HST - $874.00 * 0.14 = $122.36
Add the total price of the items being bought and HST.
$874.00 + $122.36 = $996.36
Et Votre Fait! Yay! ( And Your Done! Yay! ) Hehe.
We also learned about the golden ratio.
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Wednesday, December 5, 2007
Tuesday, December 4, 2007
Today we talked about the Golden Ratio. We talked about how are body and alot of other things will work this way.For example If you measure your arm, and then your elbow and down and you divide the long ways by the short way you will get the number 1.618 (That is the Golden Ratio) and if it`s not 1.618 it will be very close.
After we talked about that we went to a question about sales and rate savings.Here's an example.
Corey buys a jacket on sale for $53.99. Before the sale the jacket cost $63.89. What is her percent rate of savings?
1. First you have to divide the sale price by the original price.
sale price/original price = $53.99/$63.89 = 0.8450
2. Then you round it off.
0.8450 rounded off to 0.85 = 85%
3. Then minus the percent from 100% and you find the rate of savings
85% - 100% = 15%
Corey got a 15% rate of savings.
Here is another example of something we did....
new/old
1 Shirt $16.99/$18.99 = 89% 89% - 100% = 11% off
2 Pairs of socks $2.67/$3.29 = 81% 81% - 100% = 19% off
1 Sweater $19.99/$25.50 = 78% 78% - 100% = 22% off
After That we has to find out how much the tax would be for all of these items in total.
$16.99 + $2.67 + $2.67 + $19.99 = $42.32 - total items
GST - 0.06 x $42.32 = $2.54
PST - 0.07 x $42.32 = $2.96
$42.32 + $2.54 +$2.96 = $47.82 - total incl. taxes**
We also talked about ratio's and how they could compare a part:part or a part:whole
The Next Scribe Will Be Serena After Mary.
** And There`s Going To Be a Test,Friday December 7th**
Good Luck To Everybody!!.
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Sunday, December 2, 2007
math
Sorry guys, my internets down.
Thursday in class we skipped mental math and went straight to a test about compairing unit prices. for example:
if Neil finds canned peas offered for sale at three cans for $3.19 in one store, five cans for $4.10 in a second and eight cans for $4.98 in a third. Which store has the lowest unit price?
Step 1:You have to divide it by itself to get one.
Step 2:You have to divide the same thing to the price.
Step 3:You have to comair the unit price of each store and see who has the lowest price.
First you have to find out how much the unit price is for one can for each store.
For the first store there`s three cans for $3.19 . You have to Divide 3 by 3 and the divide the price by 3 and you find the price of one:
3/3 = 1
$3.19/3 = $1.0633 (unit price)
For the second store there`s five cans for $4.10. You have to divide 5 by 5 and then divide the price by 5 and you find the price of one:
5/5=1
$4.10/5 = $0.82(unit price)
For the third store there`s eight cans for $4.98. you have to divide 8 by 8 and then divide the price by 8 and you find the price of one:
8/8 = 1
$4.98/8 = $0.622(unit price)
store 1 - $1.06
store 2 - $0.82
store 3 - $0.62
The lowest unit price/Best buy is eight cans for $0.62
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After that we started to do some work on taxes. (GST & PST)
For Example:
How much tax will susan pay when she buys a stereo surround sound priced at $2595 in Manitoba?
How much will she pay all together for the system?
Step 1: First you have to find out how much GST(6%) will be.
Step 2: Second you have to find out how much PST(7%) will be.
Step 3: Third you have to add the two taxes together to find the total tax.
Step 4: Then you have to add the Price($2595) to the taxes.
[1] 6%/100 = 0.06 0.06 x $2595 = $155.70 (GST)
[2] 7%/100 = 0.07 0.07 x $2595 = $181.65 (PST)
[3] $155.70[GST] + $181.65[PST] = $337.35 - Total tax
Susan will have to pay $337.35 in taxes.
[4] $155.70[GST] + 181.65[PST] + $2595 = $2932.35
Susan will have to pay $2932.35 all together for the system.
The Next Scribe Will Be Daymon. =)
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