12 3-10 circle graphs
TRANSCRIPT
Data Collection - Day 4
12/3/10EQ: How do I read circle
graphs?
•Which statements are true?
• Diagonals are shorter than the sides• Diagonals meet at right angles.• Diagonals are not parallel to any
side.
Homework• Check yesterday’s homework• Collect or stickers• New homework • Discuss problems to solve.
Angle Review • A rhombus has 1 interior angle
of 45 degrees. What are the other 3 angles?• 45, 135, 135
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
Best Graph for• Comparing ?• Bar/Picto –• Change over time?• Line Graph• Finding median, mode, range?• Stem & Leaf
Circle Graphs• Best graph for• Understanding parts of a whole• Parts of circle graph are called
wedges.
Percents & Decimals• 30% = .30• 75% = .75• 90% = .90• 125% = 1.25
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
Percents & Fractions• 30% = 30/100 = 3/10• 75% = 75/100 = 3/4• 90% = 90/100 = 9/10• 125% = 125/100 = 1 1/4
Helpful? How?• 30% = ice cream. • 20% = Pie.• 50% = bananas.•What fraction liked bananas?• 50/100 = 1/2
Parts of the Graph1/2 or 50%
1 part2 part
Parts of the Graph1/3 or about 33%
1 part2 part3 part
Parts of the Graph1/4 or 25%
1 part2 part3 part4 part
Parts of the Graph1/5 or 20%
1 part2 part3 part4 part5 part
Parts of the Graph1/6 or about 17%
1 part2 part3 part4 part5 part6 part
Circle Graphs• School has 91 students.
Circle Graphs
Circle Graphs• 93 students surveyed.
Circle Graphs• 75 families surveyed.
EQ:•How do I read circle
graphs?
Practice:•Page 447-448 #5-14