Melody's Surface Area Post

Rectangle Prism-

Triangle Prism-

Cylinder-

Melody's Pythagoras Relationships

10. a) a(2)------>81 cm(2)
b(2)------> 144cm(2)
c(2)------> 225cm(2)
b) a+b=c
81=144=225
225=225
11. a) a(2)+b(2)=c(2) b)No this triangle is not a right triangle because 4x9 does not equal
2(2)+3(2)=4(2) to 16 like 4x4 does.

(2x2)+(3x3)=4x4
2+9=13
13=\16
12. a) a(2)+b(2)=c(2)
9(2)+12(2)=15(2)
(9x9)+(12x12)=15x15
81+144=225
225=225-Perfect triangle

b) a(2)+b(2)=c(2)
7(2)+8(2)=11(2)
(7x7)+(8x8)=11x11
49+64=113
113=\121-Non-perfect triangle
c) a(2)+b(2)=c(2)
7(2)+24(2)=25(2)
(7x7)+(24x24)=25x25
49+576=625
625=625-Perfect triangle
d) a(2)+b(2)=c(2)
16(2)+30(2)=34(2)
(16x16)+(30x30)=34x34
256+900=1156
1156=1156-Perfect triangle

Melody's Pay It Forward

1.) Pay it forward is an idea that helps people and is passed on to another person who needs help with no price in return on some stuff that they need help with.

2) My pay it Forward kindness was cleaning up Principal Sparling School's yard I choose this activity because this school was like a second home for me and I hate it when people litter because there's really no need to do that. I did my act of kindness on Friday 11,2011.

3.) My active kindness went well because after I was all done cleaning up the yard it looked so clean and earth friendly and the principal said "thank you" it made me happy to know that some people in the world do this kind of good deed for no cost in return.

4.) The idea of "Pay It Forward" is important because, it is telling people how to be more kind, helpful and active at the same time! My active kindness has made a diffrence because when someone trys to litter they will think twice maybe "this isn't the right thing to do."

Melody's Graph Post

1. Use your notes to list the different types of graphs. Please list the advantages and disadvantages of each graph.
Bar graph advantage- Compare data across categories.
Disadvantage- Sometimes it's inaccurate.

Double bar graph advantage- Compare two sets of data across categories.
Disadvantage- Can only compare two sets of data.

Circle graph advantage- Best for comparing categories to the whole using percents.
Disadvantage- It is hard to compare two sets of data

Pictograph advantage-Easy to read and can show data clear.

Disadvantage-Have to calculate to know data.

Line graph advantage- Shows the change in the data over time.

Disadvantage- Can only show one set of data.

2.How can graphs be misleading. Show 3 ways.

a) Distorting the size of the visual.

b)Making a break in the y-axis.

c)Distorting the size of the bars

Heres a video to help you with bar graphs.

http://www.youtube.com/watch?v=6GK5176auVw