Joshua L's Surface Area and Volume Post

Surface Area

Rectangular Prism


Net:




Triangular Prism


Net:




Cylinder


Net:





Here is a video that will help you find the surface area.



http://ca.ixl.com/math/grade-8/surface-area-of-prisms-and-cylinders

Volume

Joshua's Square Numbers and Prime Factorization Blog

Four things about a rectangle and a square:



Length, Width and Area.






Prime Factorization:

Prime Number- only has 2 factors; 1 and itself.
eg. 2, 3, 5, 7, 11

Line of Prime Factorization:







Here is a video about Square Numbers.



Here is a video about prime numbers.



Square Numbers site:
http://www.learntables.co.uk/square_numbers/

Prime Numbers site:
http://www.sheppardsoftware.com/mathgames/numbers/fruit_shoot_prime.htm


Pythagorean Relationship

1. The Pythagorean relationship is when the sum of the area of the two squares attached to the triangle's leg equal the area of the square attached to the triangle's hypotenuse. (a²+b²=c²)

Question 2




Question 3



No, it's not a right triangle. As you can see, I did my calculations on the paper. I say this isn't a right triangle because in my calculations, the sum of the area of the squares attached to the legs is 100 cm² (which is 10 cm in length). However, on the image, it says that the hypotenuse is 11 cm in length and has an area of 121 cm². This doesn't follow the formula of the Pythagorean relationship which is a²+b²=c². In short, the sum of the area of the squares attached to the legs don't equal the area of the square attached to the hypotenuse.

We Day

On Wednesday, November 23, 2011, 40 students from Sargent Park and a few of our staff attended the We Day concert. It took place at the MTS centre. All participants left at 8:30 in the morning and took the transit bus to get there. The show started approximately at 10:00.

In the We Day concert, there were a lot of speakers who spoke about what they were passionate about and what they have achieved. Some names of the speakers are Chief Shawn Atleo (National Chief of the Assembly of First Nations), Mia Farrow (a Hollywood actress), Al Gore (the former American Vice President and Presidential candidate), Rick Hansen (Canada's Man in Motion- a winner of 19 international wheelchair marathons and an activist for those with spinal cord injuries), and Hannah Taylor (founder of Ladybug Foundation). Of course, our main speakers were there, too, Mark and Craig Kielburger and Spencer West.

Throughout the concert, we were asked questions like "Who is the generation who will change the world?" and "Who is ready to take action?" and we were suppose to shout at the top of our lungs "We are!"

In my surprise, there were famous singers who performed in the We Day concert, too! They were Shawn Desman, Sierra Noble, and Hedley!

Also, we were asked to fill out a form so that they could draw our names and we could have the opportunity to travel around the world and build schools. Unfortunately, no one from Sargent Park got picked. Instead, three ladies were selected. Each of them was asked what country they would like to go to and why. At the end, we were asked to cheer for the person we think would do the best job. The girl from in the right won!

This event is going to be a memorable experience that I will never forget, and so should you.
















For more pictures, click here

For more information about We Day, click here

Here is a video of the We Day dance. Get ready to dance this grade eights!



IT STARTS WITH ME!

Josh L's Scribe-Post

Decimals, Fractions and Percents

Converting decimals into fractions:
When converting a decimal into a fraction, all the numbers in front of the decimal becomes "1." Normally, there would be one number or place holder in front of the decimal. Then, the rest of the numbers after the decimal becomes "0." This will be the denominator. Lastly, you put the rest of the numbers that are behind the decimal on top of the denominator and you'll get the fraction.
Ex.





Converting decimals into percents:
Converting a decimal into a percent is very easy just like converting fractions into decimals. You just multiply the decimal by a hundred to get the percent.
Ex.



Converting fractions into decimals:
Converting a fraction into a decimal is very simple. You just simply divide the numerator by the denominator.
Ex.




Converting fractions into a percent:
Converting a fraction into a percent is kind of complicated than the rest. Some fractions are easy to covert to a percent. Those are the fractions with "100" as their denominator. Other fractions include one more step; you have to find the decimal. To find the decimal, you need to divide the numerator by the denominator. When you find the decimal, you just multiply it by a hundred to get the percent.
Ex.



Converting percents into fractions:Like converting a fraction into a percent, converting a percent into a fraction has one more step to it. Some percents you may know how to convert into a fraction just like that. Examples are 50%, 25%, 100%, 75%, 20%, etc. However, there are percents that are harder to convert into a fraction. So, in order to do this, you have to find the decimal. For you to find the decimal, you divide it by a hundred. When you find the decimal then you can use the "decimal into a fraction" technique.

Ex.





Converting percents into decimals:
Converting a percent into a decimal is fairly simple. You just divide the percent by a hundred and you will get the decimal.
Ex.

Here are the examples we did today in class.

Here is a video about decimals, fractions and percents. I put this video of guys rapping about decimals, fractions and percents because i thought that the other videos are boring. So enjoy!



Now, here is a link to a math site.
http://jmathpage.com/JIMSFractionsfractionsdecimalspercents.html