Leea's Algebra Post

Algebra- writing mathematical phrases using letters to represent numbers

Variable- a letter that represents a number in an algebra equation or expression

Constant- integer in an algebra expression or equation

Equation- only has one answer and has an equal sign (=)

Expression- has a pattern, many answers

1) Isolate the variable

2) Cancel the constant using zero pair

3) Balance - d

o the same operation

on the other side of equal sign (=)

4)Verify to c

heck

Green (positive) or White (negative)

Solving One-Step Equations:

Question#1

Question# 2

X+2=3

Question#3

Question#4

Here are some links to help you :

http://www.analyzemath.com/intermediate_algebra/questions_1.html

http://www.analyzemath.com/intermediate_algebra/questions_1.htmlhtml

http://tutoring.sylvanlearning.com/eighth_grade_math_algebra.cfm

Youtube Videos Links:

http://www.youtube.com/watch?v=G6fPIVeS_-A&feature=fvwrel

http://www.youtube.com/watch?v=etQZMd0xqKE&NR=1

Term 2 Reflection

This term was quite difficult for me, we have learned about Surface area, Percent, and Volume. On weekly test and quizzes i did fairly well. We also have leaned about representing percents by using hundred grids, fraction, decimals and percent. Finding percent of a number and also combining percent. I like converting fractions into a percent, because I like looking at percent in a different form. On to surface area, I understand doing surface area more than percent because I have found this unit very interesting and very easy at times. I done fairy well on my weekly test and quizzes. I also had trouble with some of the question from the homework book and the textbook during the unit when we were learning about volume.

My goals for next term. I will try to do better next term, by studying more for test and quizzes and completing all of my blog post. And I will also try to ask questions during class if I don't understand something. Lastly I have notice that asking question to your teacher and classmates can be very helpful.

Great Big Book Of Interger

Grade 7 Integers Review

Chapter 1
Zero pair is a pair of number with a positive and negative sign whose sum is Zero.
Examples: -6+6 +10-10 19-19
-16+16 -11+11 +14-14 63-63

Brackets are training wheels

Examples :

Have +4 owe -4

(+4) - (+4)= 0

Standard Form

+4 + -4

+4 -4

4-4

4-4 Standard Form

Integer Chips

Multiplying Integers

Example:

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

(2)x(3)=6

(2) (30=6 2(3)=6

Standard Form

Sign Rule

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 finding the total number in a group.

Sign Rule for Division-

if the quotient of 2 integers with the same sign with an even amount of (-) signs then it equals positive, if the quotient of 2 integers with different signs then it equals negative.

Links:

http://www.youtube.com/watch?v=S-AaL3q3NfQ

http://www.youtube.com/watch?v=2CRSXo3mE74

PROBLEM UPLOADING VIDEO!

Leea's Volume And Volume Problems

Chapter 7.3



r =d/2
r = 8/2
r= 4 m

V= πxrxrxh
V= 3.14 x 4 x 4 x 10
V= 50.24 m^2 x 10 m
V= 502.4 m^3

V= 502.4 m^3/2
V= 251.2 m^3




r= d/2
r=10/2
r= 5

V= π x r x r x h
V= 3.14 x 5 x 5 x 30
V= 78.5 cm^2 x 30 cm
V= 2355 cm^3

r= d/2
r= 8/2
r= 4

h = V/ π x r x r
h = 2355 cm^3/ 3.14 x 4 x 4
h = 2355 cm^3/ 50.24 cm^2
h= 46.875 cm or 46.9 cm

Chapter 7.4


V= π x r x r x h

V= 3.14 x 0.5 x 0.5 x 10

V= 0.785 m^2 x 10 m

V= 7.85 m^3

V= π x r x r h

V= 3.14 x 0.4 x 0.4 x 10

V= 0.5024 m ^2 x 10 m

V= 5.024 m^3

V= 7.85 m^3 - 5.024 m^3 v= 2.826 m^3


LINKS:
http://www.youtube.com/watch?v=QhHYOZ0Rf4I
http://www.youtube.com/watch?v=bON3X7UpFRE

Leea's Pay It Forwards

The Pay It Forward movie was about Trevor, an 11 year old boy who tries to make a change for the world. His Social Studies teacher Mr. Simonet had given the class an assignment. Trevor's plan was to do something nice for three people. Instead of Trevor paying it back, the three people have to "pay it forward" to three other people. The movie shows a huge difference on people who receive the favor and also to those who had paying it forward. At the end of the movie, the "Pay It Forward" group had grew big as many more people paid their respect to Trevor who had died from a fight.

My Pay It Forward act of kindness was to shoveling my grandpa's front yard. I had chose this act of kindness because I thought it would be nice to shovel his. So I had help my grandpa and grandma. So I decided to shovel the snow they usualy walk. I had did my act of kindness in the afternoon of December 21 2010.

My act of kindness went just how i planned in the begin. I shoveled the snowout of the path way.The snow was very heavy but the shovel wasn't that heavy, it didn't talk that much effort. I felt warm in the inside after my grandpa smile and gave me a hug. My grandpa and grandma was really thankful of what I had done for them. I had ask my grandpa and grandma to pay it forward and they said "yes" they will do something good for someone.

The idea "Pay It Forward" is important because I think if people will do and act of kindness and it pay it forward, many lives will be different. Some people do good things because they want to recieve something in return. I feel my act of kindness made a difference.

SORRY THE PICTURE WOULDN'T ALLOW ME TO UPLOAD TO THE BLOG.

Show You Know

For each of the following, use perfect square to estimate the square root to one decimal place. Check your answer with a calculator.

√18
4 Square
5 Square
4. 25

√23
4 Square
5 Square
5.8

√35
5 Square
6 Square
6.9

Leea's Sesame Street Video

Members:
Leea Kewall: Camera person
Duyen Chau: The shop representive
Sandra Freund: Customer

Ratio
two-term ratio - comparing two quantities measured in the same units
three-term ratio- compares 3 quantities measured in the same units
part to part ratio- compares 1 part of a group to each other
part to whole- compares 1 part of a group to the whole group and can be written as a decimal, fraction or a percent
Example: 1 teddy bear : the total of stuffed animals

Rate
rate- compares 2 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: $1.50/stuffed animal, $4.00/2 stuffed animals


Proportion
proportion- a relationship that says that 2 ratios or 2 rates are equal

Part 1: Orignal Video: Banana Sign
http://www.sesamestreet.org/video_player/-/pgpv0/37899ce0-7d5a-42bc-a93a-3a31369b42/banana_sign
Samara wants a banana, but Telly doesn't understand the sign language until the end of the video.