Sophia's Volume Post

The definition for Volume is:
Volume is the amount of space an object takes up.
Or to make it sound better and be more specific it is:
Volume is the measure of the amount of space inside of a solid shape like triangle, cylinder or cube.
The formula for volume is b=base bxh or lxw l=length
h=hieght w=width

a 2 means a squared

Sorry I am not able to post up any pictures.
So I'll just do this.

B

6cm C 9cm

A
a 2+b 2= c 2
6 2+ 9 2=c 2
(6x6)x(9x9)=c 2
36+81=c 2
117=c 2


A
5cm C

B
5cm

a 2+b 2=c 2
5 2+5 2=c 2
(5x5)+ (5x5)=c 2
25+25=c 2
50 2=c 2

52cm
B A 20cm

C

a 2+b 2=c 2
20 2+52=c 2
(20x20)+(52x52)=c 2
400+2704=c 2
3 104=c 2

Sophia's Term Two Reflection

In term two we learned about Volume, Surface Area, and Percents. I think I did really well when we were working on Surface Area.ex
a 2 + b 2=c 2
5 2+5 2=c 2
(5x5) +(5x5)=c 2
25+25=c 2
50 2=c 2
At first I didn't understand it but after awhile it was really easy. Espeasially unwrapping a cylinder, rectangular prism,and triangle prism.
Another thing that was pretty easy was volume.
I learned that by using a piece of string and going around a circle leaves a gap which is 3.14 and that's for any shape or size. I learned stuff like pi x r x r.
The things I think that I did poorly in was pecents and I think it was because I wasn't really interested in it and that I wasn't asking any questions. Next time I will ask my dad or a friend for help. I think that working more on the blog will increase my term 3 mark and getting ready and ahead the day before a test or qiuz so if theres something I don't get I can ask for help.

Sophia's Great big book of integers

Integers can be positive or negative odd or even. A negative number is a number that is less than O. An even number can be divided by 2. An odd number can't be evenly divided by 2. O is an even number and it is not positive or negitive just 0

-NEGATIVE is blue
+POSITIVE is red
BOTH=zero pair

Remember the song "use a zero pair when subtracting something that is not there"
(use this song it will help)

Grade 7 way
Using brackets ( )

Standard form
Not using brackets ( X )

If you are having trouble and you don't understand intergers use a number line or think of it as money.(try it out right now)

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

Examples:

-11-(4)=-7 - - - - - - - (- - - -) Take this away

22-(-9)

22-+(-9)=31 + + + + + + + + + + + + + + + + + + + + + +

- - - - - - - - -

+ + + + + + + + +

These are supposed to be zero pairs
(sorry about the whole zero pair thing )

Sorry that I don't have blue and red circles but I think you get it

-9 +4 +(-9)

-9 +4 -9 Sorry I tried making a number line but it didn't work

-9 -9 +4 But a number line is a good strategy-for me anyway

-18+4= -14

example of multyplying integers:

7X-2

Forget the signs and multyply normaly

7X2= 14
Now you can go back to the signs
You know that a positive times a negative is a negative
So your answer is obviously -14

Sorry that I didn't do any of the chapters