Transcript Grab Bag Lesson

Class: Eighth Grade Mathematics
Instructor: Mr. Vogel
Unit: Probability and Statistics
Time: 1 Period (68 Minutes)
Do Now
 How do you calculate the mean, median, and mode for
a set of numbers?
 What is the mean, the median, and the mode for the
set of the following girl’s shoe sizes: {4, 5, 5, 5, 5, 5, 5,
6, 6.5, 6.5, 7, 8, 9}?
Grab Bag Activity Discussion
Questions
 Which measure (median, mode, or mean) best represents
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the typical length of a rod from a handful of Cuisenaire
Rods? Explain your reasoning.
What does the mode tell you about the handful? Why is
the mode sometimes very different from the mean and
median?
What does the median tell you about the handful of rods?
How is the mean useful in describing the typical length of a
rod?
Which set of data (Player 1, Player 2, or the combined
totals) is most useful in describing the typical length of a
rod? Why?
Grab Bag Activity Extension
Discussion Questions
 How did you go about making your predictions?
 How did the data that you collected compare to your
predications?
 Compare your data to that gathered during the first
activity. Which measure—the mean, the median, or
the mode—was affected the most by the removal of
the Cuisenaire Rods? Why?
Closure
 What did you learn from this lesson?