Circumference
Area
Parts of a Circle
Proportional Relationships
Surprise
100

Diameter of a circle is 2. What is the circumference? 

6.28

100

When the radius is 4, what is the area of a circle?

50.24

100

What is the middle point of the circle called?

Center

100

Is the equation for circumference proportional?

Yes. 

100

What gender is Ms. Browns baby?

Girl

200

Radius of a circle is 3, what is the circumference?

18.84

200

When the diameter is 18, what is the area of a circle?

254.34

200

What is the line from the center of the circle to the outside? 

Radius

200

Is the equation for area proportional?

No.

200
Is Ms. Hatcher married, engaged, or single?

Engaged

300

What is the equation for circumference?

c = diameter x 3.14 (pi)

300

What is the equation for area of a circle?

a = 3.14(pi) x r2

300

What is the line called that goes all the way across the circle?

Diameter

300

What is the constant of proportionality used in the equation for circumference?

3.14

300

What is my favorite color?

Purple

400

If the circumference of a circle is 62, what is the diameter?

19.75

400

If the diameter of a circle is 10, what is the area?

78.5

400

What is the distance around the circle?

Circumference. 

400

What is the constant of proportionality?

x    l     y

-----------

1    l    15

2    l    30

3    l    45

15

400

What are Mrs. Walkers daughter's names?

Amber and Emma

500

If the circumference of the circle is 26, what is the radius?

4.14

500

If the area of a circle is 86, what is the radius?

5.23

500

Draw a diagram and label all part of the circle. 

Draw on board.

500

What is the constant of proportionality?

x    l     y

-----------

4    l    2

8    l    4

9    l    4.5

1/2

500

Name the three books you've read in English this term. 

Castle Diary, Canterbury Tales, Midwife's Apprentice. 

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