Ishaka's Term 2 Reflection

This term we learned about surface area and volume. I think I did all right this term because when we were learning about surface area it was kind of hard but when we started to learn volume It was easy. I had great test scores It was probably because I started to pay attention in class. Learning volume was so easy that I didn’t struggle doing any of the work we did in class. Next term my goal is to do more work, and pay attention in class.

Ishaka's Great Big Book Of Integers

Chapter 1: Grade 7 Integer

Review

- zero pair -a positive # and a negative # combined make a zero pair.

(Eg. 1-1=0)

- number lines can be used.

- "When subtracting something th

at isn't there, use a zero pair." This saying helps when subtracting integers."

- Gr. 7 way:

(+7) + (-3) =
positive 7 and negative 3.
have 7 and owe 3.
+7 + -3
Gr. 8 way:

7 - 3 = 4

-Stared Homework Questions:

-3 - (-7) = 4

-3 - 7 = -10

3 - 7 = -4

3 + 7 = 10

-3 + 7 = 4

Chapter 2: Multiplying Integers

- Sign Rule (negative signs)

Whenever you have an odd number of negative factors the product will be a NEGATIVE number, and when you have an even number of negative factors the product will be a POSITIVE number.

(+2) x (+3)= 6

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

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

(-2) x (-3)= 6

Chapter 3: Dividing Integers

Partitive Division: means how many groups there are and how many integers are in that group

6÷ 2=3

means in partitive division-
How many groups of +2 are in 6?






-6 ÷ (-2)= 3
means in partitive division-

How many groups of -2 are in -6?







Quotative Division: means sharing equally so that every group has the same amount of integers

(-6) ÷ 2 = -3
Share (-6) with 2 groups.



Multiplicative Division

-6 ÷ -2 = 3
-3 x -2 = 6
-2 x -3 = 6

-6 ÷ 2 = -3
2 x -3 = -6
-3 x 2 = -6

(+5) x (-3) + (-6) ÷ (+3)=

[(+5) x (-3)] + [(-6) ÷ (+3)]=

(-15) + (-18) = +33

Chapter 4: Order Of Operations With Integers

BEDMAS: Brackets, Exponents, Division, Multiplication, Addition, Subtraction

(+10) x (-5) + (+6) ÷ (+3)

1. add square brackets

[(+10) x (-5)] + [(+6) - (+3)]

2. answer what's in the square brackets

[(+10) x (-5)] + (+6) - (+3)

-50 +



3. After the brackets you find the exponents

4. Then after exponents do the multiplication and division (answer left - right)

[(+10) x (-5)] + (+6) - (+3)

-50 +

-50 + 2

5. After the multiplication/ division then you do add and subtract (answer left - right)

6. Then you have your answer.

[(+10) x (-5)] + (+6) - (+3)

-50 +

-50 + 2

= -48

Ishaka's Volume Scribe Post

7.3

d/2=r

20.3/2=r10.15=r (π.r.r)x h=v
(3.14 . 10.15 . 10.15) x 10=v
323.49065cm^2 x 10cm=v
3 234.9065cm^3=v
The Answer: 3 234.9065cm^3

7.4

M.I

* height = 10m
* diameter = 1 (outside) and 0.8 (inside)

Outside : r = d/2 r = 1/2 r = 0.5 v = (π x r x r) x h v = (3.14 x 0.5 x 0.5) x h v = 0.78m^2 x 10m v = 7.8m^3 Inside : r = d/2 r = 0.8/2 r = 0.4 v = (π x r x r) x h v = (3.14 x 0.4 x 0.4) x h v = 0.5m^2 x 10m v = 5m^3 Inside = 5m^3 Outside = 7.8m^3 volume2 - volume1 = volume of culvert 7.8m^3 - 5m^3 = 2.8m^3 The concrete required to make the culvert is 2.8m^3

Final Percent Post

The word percent means out of 100. Percents can be converted into decimals or fractions.

Ex. 65% - 65/100 - 0.65

Representing Percents 4.1

you can represent percents by using a hundred grid, since percents are out of 100.

Ex. this grid shows 13% since 13 squares are colored in.

Fractions, Decimals, and Percents 4.2

Percents can be converted into fractions, or decimals.

Ex. 50% - 1/2 - 0.5

Percent of a number 4.3

To calculate the percent of a number, write the percent as a decimal and then multiply by the number.

Ex. 12 1/2 % of 50 = 0.125 x 50

=6.25

Combining Percents 4.4

Combine percents by adding to solve the problems.

Ex. 5% + 7% =12%

MY PERCENT VIDEO

Ishaka Jordan's Pay it Forward

Part 1

In my opinion paying it forward means to help out others without anything gained.

In the movie "Pay It Forward" a school boy named Trevor had to do a project about changing the world. Trevor's idea was to help 3 people and tell those 3 people to do the same, and it will increase.

Part 2

What was your Pay It Forward act of kindness?
My Pay It Forward act of kindness was to help the janitors clean up Sargent Park School

Why did you choose this activity?
I chose this activity because being a janitor is hard, because you have to clean up a lot of daily messes.


Who did you help?
I helped the janitors at Sargent Park.



What did you do?
I helped the school by cleaning the hallways and some classrooms at Sargent Park School.

When did you do your act of kindness?

I did my act of kindness on Friday Dec 17, 2010 3:30pm

Part 3

How did your act of kindness go?
I think my act of kindness went really well.



What Happened?
My friends and I did a lot of cleaning to help out the janitors, but it was worth it.



How did you feel?
I felt awesome, It felt great helping out the janitors and not getting rewarded.



How did the person or people react?
The janitors of our school were really happy that my friends and I helped.

Did you ask the person or people to "Pay It Forward"?
Yes we did, but actually my friend Patrick kinda did it for us all.



How did they react to your request?
He said that its good that were doing this because we can help each other.

Part 4

Why is the idea of "Pay it Forward" important?
The idea Pay it Forward is important because it's a really nice thing to do, like the golden rule "Treat others they way you would like to be treated"

Has your act of kindness made a difference?

I think my act of kindness made a little difference, because I would be mad if I had to clean messes over and over again.

Homework

Question 1.

The average male has 15% body fat. If Jack has a mass of 79 kg how much of it is fat?

Jack has 11.8 kg of bodyfat.

Question 2.

Last year the bombers averaged 25 200 fans per game. This year attendance dropped 4.9% what was this years average attendance?

This year 1234.8 fans attended per game.

Can someone help me with Question 2. I need help with the grid, I wasn't sure what to do.

Ishaka's square roots scribe post

4) Estimate the square root of each number, to one decimal place. Check with a calculator.

a) 72
square root 64 =8 x 8
square root 72 = 8.__x 8.__
square root 81 = 9 x 9

I estimated that 8.49 was the square root of 72 calculator 8.48

b) 103
square root 100 = 10 x 10
square root 103 = 10.__ x 10.__
square root 121 = 11 x 11

I estimated that 10.15 x 10.15 was the square root of 103 calculator 10.14

c) 55
square root 49 = 7 x 7
square root 55 = 7.__ x 7.__
square root 64 = 8 x 8

I estimated that 7.42 x 7.42 was the square root of 55 calculator 7.41




6) What is an example of a whole number that has a square root between 9 and 10?

9 10
81 100

examples: 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99.

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

Ishaka Math Profile

I`m Ishaka a grade 8 math student and I can like and dislike math at different times. The times I like math are when It's easy to understand what's happening, and what we're doing. I also like when we do different math games. In class we learned a lot of stuff like probability, integers, adding fractions, converting decimals into precents, graphs, mean, median, mode and more.

My favourite unit I learned about in grade 7 was integers, because it was really easy to understand. I struggled a lot on fractions, because it just really confused me. This year, I'm gonna try to focus on fractions, and get the hang of it.

So this year, for grade 8 I really want to do better than grade 7, and improve in my grades. I don't want to procrastinate at all. 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 .

This is my only blog but I think Its good because, this was my only post to the blog, and because my classmates gave me feedback, and I improved throughout the year . Blogging for math class, helped me because when my classmates told me what I did good and what I could've done to make a better blog. I want to do well in blogging this year.