1. Clicker questions as your clue  Grade 8 Math
What is the topic?
Clicker questions as your clue 
Grade 8 Math

2. The most/least popular kind of music/sport/fast food
-From Grade 8 St. Columba C.S.

3. What do you think is the most popular kind of music in this class?
A. Classical Music
B. Rock Music
C. Metal Music
D. Hip-hop Music
E. Jazz

4. What do you think is the most popular kind of sport in this class?
A. Football
B. Soccer
C. Hockey
D. Volleyball
E. Swimming

5. What do you think is the most popular kind of fast food in this class?
A. McDonald
B. Burger King
C. Pizza Pizza
D. KFC
E. Subway

6. What is the topic for today?
A. Number Sense
B. Data management
C. Patterning and Algebra
D. Measurement
E. Geometry and Spatial Sense

7. Review: Tally chart
Tally Chart: A method of counting frequencies, according to some classification, in a set of data
Pet
Tally Marks
Number
Cat
Dog
Fish

8. Review: Mean
Mean:the mean of a set of numbers is found by dividing the sum of the numbers by the number of numbers in the set
Mean= Sum of the numbers
Number of numbers

9. Review: Ratio
Ratio: a comparison of quantities with the same units. A ratio can be expressed in ratio form or in fraction form; for example, 3:4 or ¾

10. Hands on activity
-grade 8

11. Activity: Textbook Page 90
Gather cubes in two different ways
Divide into 5 groups
A reporter from each group
Individual: takes turn to repeats for 3 times with two ways: hand up and hand down
Individual: fills in Tally chart and calculate the number
Individual: calculate means for your two ways
Group: fill in Mean and Ratio chart
Class: guess which chart to use

12. Different types of graph
-grade 8

13. Graphs Graphs are pictures that help us understand amounts.
These amounts are called data.
There are many kinds of graphs, each having special parts.
What are the elements of a graph?

14. Graphs
Type
Title
Labels on the axes
Units for the scales
Legend

15. What type of graph is this?
A. a bar graph
B. a pictograph
C. a line graph
D. a scatter plot
E. a stem-and-leaf plot
F. a circle graph

16. What type of graph is this?
A. a bar graph
B. a pictograph
C. a line graph
D. a scatter plot
E. a stem-and-leaf plot
F. a circle graph

17. What type of graph is this?
A. a bar graph
B. a pictograph
C. a line graph
D. a scatter plot
E. a stem-and-leaf plot
F. a circle graph

18. What type of graph is this?
A. a bar graph
B. a pictograph
C. a line graph
D. a scatter plot
E. a stem-and-leaf plot
F. a circle graph

19. What type of graph is this?
A. a bar graph
B. a pictograph
C. a line graph
D. a scatter plot
E. a stem-and-leaf plot
F. a circle graph

20. What type of graph is this?
A. a bar graph
B. a pictograph
C. a line graph
D. a scatter plot
E. a stem-and-leaf plot
F. a circle graph

21. Homework: page 91 1. Census or Sample?
2. Which set of data match the circle graph?
3. How to interpret the graph to data?
4. How to use stem-and-leaf plot?
5. How to display data as a bar graph?
6. what is the mean, median and mode?