## Tuesday, March 30, 2010

### Elijah's Fraction Growing Post

Part One :

A) Math Quiz Video

B) Page 202 , Question 6 C

C) Page 208, Question 5 A

D) Page 208, Question 7

Part two :
Fraction x Fraction :

Fraction x Mixed :

Mixed x Mixed :

Part three :

Dividing :

Sorry if the pictures are too small. Just click the pictures to make it bigger.

## Sunday, March 28, 2010

### Kathleen's Fraction Growing Post

PART 1:
a) Fraction Quiz; Video.

b) Page 202, 6 B
Explain two ways to multiply a fraction by a whole number.

c) Page 208, 4 A
Explain how to divide a fraction by a whole number.

Page 208,
7
Word Problem.

PART 2:
a) Fraction x Fraction.

b) Fraction x Mixed Number.

c) Mixed Number x Mixed Number.

PART 3:
Dividing.

## Thursday, March 25, 2010

### Carla's Fraction Growing Post

Part 1

Fractions Quiz

Page 202, Question 6. a) 4 × 1/2

First way -

Second way -

Page 208, Question 4 a) 1/4 ÷ 2

Page 208, Question 7 :
A pitcher of orange juice is 2/3 full. If four students equally share the juice, what fraction of the full pitcher does each student get?

Each student gets 2/12 of the pitcher.

Part 2

1. fraction x fraction

2. fraction x mixed number

3. mixed number x mixed number

Part 3

1. 1 1/2
÷ 3/4

2. 3/4 ÷ 1/2

### Jim's surface area growing post

Length is 5cm
Width is 3 cm
Height is 4cm

Bottom and Side Side and Side Top and Bottom
W x H H x L W x L
3x4=12 5x4=20 3x5=15
12+12=24cm 20+20=40 15+15=30cm

TSA= 24+40+30=94 cm2

Base is 7cm
Height is 8cm
Width is 10cm

A=BxH A=LxW
A=7cm x 8cm= A=8x10
A=56cm2 A=80cm+80cm+80cm=240cm
A=56+56
A=112cm2 A=112+240=352cm2

D=12cm
L=16cm

R=D/2 A=pi x r x r C= pi x d A= LxW
R=12/2 A=113.04+113.04= C= 3.14x12x12 A=37.68x16=
R=6cm A=266.08cm2 C= 37.68cm2 A= 602.88cm2

TSA=266.08cm2+602.88cm2=868.96cm2

## Wednesday, March 24, 2010

### Charis' Surface Area Growing Post

the formulas :
A = B x H / 2
A = 7 x 5 / 2
A = 17.5 cm2

A = L x W
A = 5 x 3
A = 15cm2

A = L x W
A = 7 x 3
A = 21cm2

A = L x W
A = 8 x 5
A = 40cm2

TSA = 17.5 + 15 + 21 + 40 = 93.5 cm2

The formulas :
A = L x W A = 2 x 8
A = 16cm²
A = L x W
A = 2 x 2
A = 4cm²

TSA = 16 + 16 + 16 + 16 + 4 + 4 = 72cm2

the formula's :
A = L x W
A = 4 x 4
A = 16 cm2

A = L x W
A = 4 x 2
A = 8 cm2

A = L x W
A = 2 x 4
A = 8cm2

TSA = 16 + 8 + 8 = 32 cm2

## Sunday, March 21, 2010

### Shania's Surface Area Growing Post

Area 1
A=LxW
A=1x8
A=8cm
Area 2
A=LxW
A=4x8
A=32cm
Area 3
A=LxW
A=4x1
A=4cm

TSA=A1+A1+A2+A2+A3+A3
TSA=8 +8 + 32+32+ 4 + 4
TSA=88cm²

Area 1
A=BxH/2
A=8x4/2
A=16cm
Area 2
A=LxW
A=4x4
A=16cm
Area 3
A=LxW
A=4x8
A=32cm
TSA=A1+A1+A2+A3+A3
TSA=16+16+16+32+32
TSA=112cm²

C=πd
C=3.14x4
C=12.56

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

L.A.=LxW
L.A.=12.56x14
L.A.=175.84cm

TSA=circle+circle+L.A.
TSA=12.56+12.56+175.84
TSA=200.96cm²

### Elona's Surface Area Growing Post

(Note: The '3' indicated with the yellow line is supposed to be 4, and the other 3 is supposed to be a 2)
Rectangular Prism

Net:

A = L x W
A = 15 x 4
A = 60 cm2

A = L x W
A = 4 x 2
A = 8 cm2

A = L x W
A = 15 x 2
A = 30 cm2

TSA = 60 + 60 + 8 + 8 + 30 + 30
= 196 cm2

Triangular Prism

Net:

A = B x H /2
A = 12 x 5
A = 60 cm2

A = L x W
A = 15 x 3
A = 45 cm2

A = L x W
A = 5 x 3
A = 15 cm2

A = L x W
A = 12 x 3
A = 36 cm 2

TSA = 36 + 36 + 45 + 15 + 60
= 192 cm 2

Cylinder

Net:

R = D/2
R = 9/2
R = 4.5cm2

Circumference:
C= Pi x D
C= 3.14 x 9
C= 28.26

Area:
A= Pi x R x R
A= 3.14 x 4.5 x 4.5
A= 63.585

L x W = Area
63.585 x 63.585 = Area
127.17 cm2 = Area

Total Surface Area:

TSA=Circle+Circle+Rectangle
=63.585+63.585+127.17
= 254.34 cm2

## Thursday, March 18, 2010

### Surface Area Growing Post

Here is my Growing Post for Surface Area

RECTANGULAR PRISM :

Here is the formula to calculate the area of a rectangular prism
a = l x w
a = 2 x 8
a = 16cm²

a = l x w
a = 2 x 2
a = 4cm²

TSA

= (bigger rectangle)+(bigger rectangle)+(bigger rectangle)+(bigger rectangle)+( smaller rectangle) + (smaller rectangle)
= 16 + 16 + 16 + 16 + 4 + 4
= 72cm²

TRIANGULAR PRISM :

Here is the formula
to calculate the area of a triangular prism
a = b x h ÷ 2
a = 7 x 4 ÷ 2
a = 18cm²

Here is the formula to calculate the area of a rectangular prism
a = l x w
a = 3 x 7
a = 21cm²

a= l x w
a = 3 x 8
a = 24cm²

a= l x w
a= 3 x 4
a = 12cm²

TSA

= (triangle)+(triangle)+(rectangle)+(rectangle)+(rectangle)
= 18+18+21+24+12
= 73cm²

CYLINDER :

Here is the formula to calculate the radius
r = d ÷ 2
r = 6 ÷ 2
r = 3cm²

Here is the formula to calculate the area of a cylinder
sa = 2 x (pi x r²) + (pi x d x h)
sa = 2 x 3.14 x 3 x 3 + 3.14 x 6 x 7
sa = 56.52 + 131.88
sa = 188.4 cm²

So that's my " growing post " for " surface area " ... hope you liked it and feel free to comment. byee