Lesson Plans - Grade 8 Math
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A number like this [1.2.2] is a state benchmark for math. Click it to link to the benchmarks.
12-4-2000 1. HW592(4-6)1-10...2. .................3. ................. 4. .................5. .................6. .................
OBJECTIVE: Construct and interpret Box and Whisker Plots(4-7,
Pp155ff)[1.4.6] ACTIVITIES: Relate box and whisker plots to the
range and quartiles information. Do page 158 27, 32 and 35.
NOTES: HOMEWORK: P593(4-7) all Don't forget the problems of the week!
[Box and Whisker Tutor]
[Box and Whisker Plots]
[box and whisker - actual use example] [Interactive Box and whisker]
12-5-2000 1. HWP493(4-7)all...2. .................3. ................. 4. .................5. .................6. .................
OBJECTIVE: Enter Data. Construct and interpret Scatter Plots
(4-8, Pp159ff)[1.4.5][1.4.6] ACTIVITIES: 1/2 of the class will
enter their room data into the computer. The other half will
work on Scattergrams. Read 159 and 160, do Pages 160-161 1-25
NOTES: HOMEWORK: Due on 12-8
[ Scatterplot description]
[ 2-D Interactive Scatterplot!]
[EXCEL instructions to make scatterplots]
[3-D scatterplots for the curious]
12-6-2000 1. Puzzle Activity..2. .................3. ................. 4. .................5. .................6. .................
OBJECTIVE: Puzzle Activity ACTIVITIES: Distribute Progress Report #6. NOTES:Early Release Day HOMEWORK: Don't forget the problems of the week!
12-7-2000 1. ProgReport #6....2. .................3. ................. 4. .................5. .................6. .................
OBJECTIVE: Enter Data. Construct and interpret Scatter Plots (4-8, Pp159ff)[1.4.5][1.4.6] ACTIVITIES: 1/2 of the class will enter their room data into the computer. The other half will work on Scattergrams. Read 159 and 160, do Pages 160-161 1-25 NOTES: HOMEWORK: Due on 12-8
12-8-2000 1. HWPp160-161 1-25.2. HWPp160-161 1-25.3. ................. 4. .................5. .................6. .................
OBJECTIVE: Develop a project in class which will can be
evaluated by a scatterplot. [1.4.5] [1.4.6][1.4.8][1.4.9]
ACTIVITIES: Students will design an event, collect data, and
display the results in a scatterplot to be labelled Positive,
negative or no correlation. NOTES: Text p159ff HOMEWORK:
Final copy write up. Don't forget the problems of the week!
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Problems of the Week
Problem Solving Ideal 8-15 The eighth-grade science class is having a competition to determine who can bring the strongest bridge using only popsicle sticks and glue. The bridge that supports the most weight will win. In order to find the strongest type of stick, Marco, Elena, and Ralph have tested three different brands os sticks five times each. Here are the results:
| Test Number | 1 | 2 | 3 |
| 1 | 13oz | 8oz | 10oz |
| 2 | 15oz | 10oz | 13oz |
| 3 | 12oz | 17oz | 15oz |
| 4 | 13oz | 12oz | 10oz |
| 5 | 13oz | 11oz | 12oz |
Marco thinks they should use the stick that has the highest MEAN weight; Elena thinks they should use the stick that has the highest MODE weight; and Ralph thinks they should use the stick that has the highest MEDIAN weight. Will any of them choose the same type of stick? Who do you think is right? Why?
Problem Solving Ideal 8-24 A recent study by Galloping Poll, Inc., revealed that the mean amount of television watched by Americans is an astonishng 30 hours per week! Which of the sets of data below (showing hours of viewing per week for 10 viewers) would make this number the MOST accurate reflection of [peoples viewing habits? Be sure to explain with numbers and words why you chose the set you did.
- #1 -- 70, 70, 70, 10, 10, 8, 4, 18, 5, 40
- #2 -- 100, 5, 3, 2, 55, 35, 40, 30, 25, 5
- #3 -- 10, 20, 40, 15, 30, 40, 35, 45, 35, 30
If the only set of data available were #1, which measure would give someone the most accurate picture of the data -- the mean, mode, median or range?