Term 2 Reflection

In Term 2 we learnt about percents, surface area, and volume. I feel I did well on the unit about volume and surface area. I liked these units because I understood the formulas and found them simple to fill in the numbers and calculate the answer. I got really good marks on my quizzes and tests for volume and surface area . In Term 2 I didn’t like some of the tests we had for percents. I did not to bad on them but I feel like I can do better on percents. I also didn’t like drawing nets for the prisms because sometimes I would get all mixed up and draw them the wrong way. My goal for next term is to study more and get the textbook work done so I can get as much practice as I can on each unit that we do.

Tyler's Great Big Book Of Integers

A zero pair are 2 numbers that have the same value but opposite signs and adds up to zero Eg. -5,+5=0 "When subtracting that is isn't there use a zero pair" is a saying that I learned in grade 7.Eg. -3 - (-7)=4, -3 -7=-10, 3 -7=-4, 3 +7=10 and so on an so forth.

1) -3 - (-7) = 4

2) -3 - 7 = -10

3) 3 - 7 = -4

4) 3 + 7 = 10

5)-3 + 7 = 4

Multiplying Integers

(+3)x(+2) is the same as (3)(2) because if brackets. are touching each other, they multiply.

1) (+2)x(3)=6

Two groups of three.

This problem is a repeating addition problem and repeating

addition is like this.

3

+3

+3

+3

-------

12

2) (+2)x(-3)=-6

two groups of negative three.

This is also a repeating addition problem but this one has a negative number.

3) (-2)x(3)=-6

This problem is different. It says that you have to take away two groups of three. But you are going to use zero pairs this time.

4) (-2)x(-3)=6

You have to use zero pairs in this problem too.

Sign Rule (negative signs)
Even - When you have an even number of negative factors the product is positive.
Odd - When you have an odd number of negative factors the product is negative.

Chapter 3:Dividing Integers. Partitive division is when you know how many groups there are and you want to find how many objects are in a group; making parts. Eg.
6 ÷ 2 = 3



Quotative Division is when you know how many items are in a group and you are trying to find the number of groups; sharing

the total with the groups.
Eg.
(-6) ÷ 2 = -3



Using multiplicative inverse to solve (-6) ÷ 2 = -3


The sign rule for division is the same as the sign rule for multiplication, addition, and subtraction.
Eg.
6 ÷ 2 = 3 There are no negative signs in the question, so that means that the answer it positive.
-6 ÷ (-2) = 3 There is an even number of negative signs in the question, so the answer is going to be positive.

(-6) ÷ 2 = -3 There is an odd number of negative signs in this question, so the answer is negative.
6 ÷ (-2) = -3 There is one negative sign in the question, so the answer is negative.


Chapter 4:Order of Operations with Integers
Use BEDMAS to solve equations, don't use 'E'.
Steps to solve (+5) x (-3) + (-6) ÷ (+3)=
1. Put square brackets around the operation that has to be done first (multiplication, division, addition or subtraction in order from left to right) and solve.
[5x(-3)]+(-6)÷3=
2. Put square brackets around the operation that has to be done next and solve.
-15+[-6÷3]=

-15+(-2)=-17

Tyler's Volume Post

Volume

Linear measurement is measuring a line with a ruler.

There are different units of measurement and some examples are centimeters, milimeters, and meters.

Area measurement is measuring an area with square units.

Volume measurement is measuring an area in cubic units.

If your measuring volume and it is a liquid, remember that 1cm3=1ml

The definition of volume- The amount of space an object occupies.

The formula for finding volume is area of base x height

The base is any face that shows the named face of the prism.

The height is the perpendicular distance between the two bases of a prism or cylinder.

Rectangular Prism

Area of base x height

l x w =a

5 x 6
30cm2=a

30cm2 x 10cm = a

V= 300cm3

Triangular Prism

Area of base x height

b x h x h

-----------

2

6 x 10

-------- =30cm2

2

30cm2 x 5cm= 150cm3

Cylinder

r= d\2 area of base x height

r=10\2 pi•r2= a

r=5cm 3.14•25=a

78.5cm2=a

78.5cm2•10cm=785cm3

Here is a link that will help you!

A rectangular prism has a length of 12cm, a width of 10cm, and a height of 15cm. What is the volume?

1800cm3

1550cm3

1800cm2

1900cm

or View Results

Create your own poll at Flisti.com

Tyler's Percent Scribe Post

4.Use mental math to do the following.

a)20% of 60= 12

b)250% of 400= 1000

c)10 1/2 % of 100=10.5

8.The original price of a jacket was $84.00. A store manager marked the price down by 25 1/2 %. By how much was it reduced?

84 x 0.255 = $21.42

11. Josephine haad an average of 40% after her first game, the second game she had ten shots and finished with an average of 50%. How many baskes did she make out of ten.
She made 8 shots out of ten.

Final Percent Post

A percent means out of 100 and it also another name for hundreths
Ex. 57% means 57/100, 57 out of 100, or 0.57


4.1 Representing Percents
Representing percents means showing a percent as a picture in a hundred grid
Ex. 53% on a hundred grid, 53 squares of the grid would be shaded so its 53%


4.2 Fractions, Decimals, and Percents.
- Fractions, Decimals, and Percents can be used to represent numbers in various situations
- Percents can be written as a fraction and as decimal
Ex. 1/2% = 50%, 0.5% = 0.5/1000 = 0.005, 150% = 150/100 = 1.5, 42 3/4 = 42.75% = 42.75/100 = 0.4275


4.3 Percent of a number
- You can use mental math strategies such as halving, doubling, and dividing by ten to find the percent of same numbers
- To calculate the percent of a number, write the percent as a decimal then multiply by the numbers
Ex. 12 1/2% of 50, 0.125 x 50 = 6.25 (12 1/2% = 12.5% = 0.125)


4.4 Combining Percents
- Percent can be combined by adding to solve problems ; 5% + 7% = 12%
To calculate the increase in a number you can add the combined percent amount to the original number.
Ex. 12% of 100 = 0.12 x 100 = 12, 100 + 12 = 112
- You can multiply the original number by a single percent greater than 100
Ex. 112% of 100 = 1.12 x 100 = 112
- Percents of percents can be used to determine amounts that result from consecutive percent increases or decrease


Understanding Percents

My video.


Click here to learn about precents more.
Here is my precent scribe.

Richard's Pay it Forward

Part 1

What i think paying it forward means is doing an act of kindness knowing that you wouldn't . Doing an act of kindness for someone can make you the next one to be treated good. Doing act of kindness for someone else will know how to do something good for someone else so then bring them to paying it forward.

Part 2

My groups way of paying it forward was to donate and volenteer at the Winnipeg Harvest and Write letters to soldiers, but we couldn't go to Winnipeg Harvest because they didn't call us, telling my group when we were allowed to go there. So we just wrote letters to soldiers in Afganistan. We did an act of kindness for someone on Dec 17th

Part 3

Our plan worked out. Everyone in the group there jobs and helped each other out. I felt good that i wrote letters to soldiers to support them. We didn't ask soldiers to pay it forward because the soldiers already did.

Part 4

The reason for paying it forward is important because it makes everyone happy and makes some people do good things to other people which made people to pay it forward. My group all think our plan worked because it showed them how to do something good to someone.

Tyler's Pay It Forward

Part 1
Pay it forward is when you help people without expecting them to help you back. If the people you helped help more people it is like a chain reaction that can get really big. In the movie "Pay It Forward" a young boy named Trevor has a project where you have to change the world in a way . He decides to help three people. Then those three can help three more each and the number of people help can increase by a lot really fast.


Part 2
My act of kindness was to write a letter to a Canadian soldier in Kabul, Afghanistan. I chose this activity because the Canadian armed forces are protecting our nation on foreign ground and I want to show appreciation for what our soldiers have done, not only for our country, but other countries too . It must be very hard to be in a country far from home and away from your family for a long period time. The letter I wrote can tell a soldier that people all over Canada care.

This is me writing the letter.

This is me delivering the letter.

Part 3
I felt great when I put that letter in the mailbox because I know that it can encourage a soldier to continue to serve our country proudly. The reason why I didn't tell the soldier to pay it forward because he or she has already done it to the whole nation. The Canadian soldier is helping a lot more people than I ever could.



Part 4
The idea of Pay It Forward is very important to humanity because it can change the lives of many people and make the world a better place to live in for everyone. Hopefully the letter I wrote can tell a soldier that Canadian citizens care about them and encourage them to continue to serve their country proudly.I did this on Dec.18/10

Scribe 4

I chose to do #4 and it is questions 17,19, and 21.

17. Use prime factorization to figure out if 54 is a perfect square.

The answer is...

No. 54 is not a perfect square.

19. Find the distance that the students ran. They ran around the field twice.

They ran 1360m.

21.Kate wants to put a patio in her backyard. The patio stones have an area of 1m.She created this design.

a)What is the area?

56m2

b)What other possible dimensions are there?

There is 7 by 8 and 28 by 2.

c)Can you make the patio in to a square?Explain.

No.

Tyler's Sesame Street Video Post

Tyler, Richard, Kevin

Proportinal reasoning-A relationship that shows two ratios or two rates are equal.
Example-How much will 12 erasers cost if 3 erasers cost $0.75?
Multiply 3 by 4 to get 12 so if u multiply 75 by 4 you get $3.00.

Rates-compares 2 quantities measured in different units.

Two Term- Compares 2 quantities.
Example. A:B

Three Term-Compares three quantities.
Example. A:B:C

Part to Part- Compares 2 parts of a whole.
Example. 2:3 23233

Part to Whole- Compares 1 part to a whole.
Example. 2:5 22333

Rates-Comapares 2 different quantities.

Unit Rate- When the second term is 1.
Example. 27km/Hr

Unit Price-Is used when shopping.
Example. $1.35/100g



Sorry I couldn't find this video on youtube so here is the link.

It shows Bert doing a magnet trick to Ernie.

I couldn't embed my video for some reason so I'll just use a link.

Tyler's Math Profile

Hi there my name is Tyler and I am a math student in Grade 8. I like math a lot and it is my favorite subject in school. One of my favorite math activities is when I was in grade 5 and my class did a Mars bar hunt with coordinets. My struggle area is probably circles. I just can't get used to them.

The unit I enjoyed learning about most in grade 7 was fractions.ome parts were new to me, like adding fractions with unlike denominators, then having to fine the common denominator. They were quite easy to understand.This year, I'm gonna try to focus on circles, and get the hang of it.

I want to do well on tests and study harder ! This year, I just want to learn new things to get ready for grade 9, because last year I only studied for exams.

I made one post last year and I say I could have done better. There was so much space and I wish i did better. This year I'm going to do a better job as a blogger.