The document contains notes from a data collection session on reading circle graphs. It includes definitions of key circle graph terms like wedges and percentages represented as decimals. Examples are provided for calculating percentages of a total number and converting between percentages, fractions, and decimals. Students are assigned practice problems working with circle graphs.

1. Data Collection - Day 4 12/3/10 EQ: How do I read circle graphs?

2. Which statements are true? Diagonals are shorter than the sides Diagonals meet at right angles. Diagonals are not parallel to any side.

3. Homework Check yesterday’s homework Collect or stickers New homework Discuss problems to solve.

4. Angle Review A rhombus has 1 interior angle of 45 degrees. What are the other 3 angles? 45, 135, 135

5. Angle Review You designed an isosceles triangle flag. One interior angle is 40 degrees. What are the possibilities for the others? 40, 100 70, 70

6. Best Graph for Comparing ? Bar/Picto– Change over time? Line Graph Finding median, mode, range? Stem & Leaf

7. Circle Graphs Best graph for Understanding parts of a whole Parts of circle graph are called wedges.

8. Percents & Decimals 30% = .30 75% = .75 90% = .90 125% = 1.25

9. Helpful? How? 30% of 250 students like ice cream. How many is that? 250 x .30 = 75 75% of 250 students likes tacos. How many is that 250 x .75 = 187.5 OR 188

10. Percents & Fractions 30% = 30/100 = 3/10 75% = 75/100 = 3/4 90% = 90/100 = 9/10 125% = 125/100 = 1 1/4

11. Helpful? How? 30% = ice cream. 20% = Pie. 50% = bananas. What fraction liked bananas? 50/100 = 1/2

12. Parts of the Graph

13. Parts of the Graph

14. Parts of the Graph

15. Parts of the Graph

16. Parts of the Graph

17. Circle Graphs School has 91 students.

18. Circle Graphs

19. Circle Graphs 93 students surveyed.

20. Circle Graphs 75 families surveyed.

21. EQ: How do I read circle graphs?

22. Practice: Page 447-448 #5-14