TEACHERS:
SUBJECT: Math
Jamy Myrmel
STANDARD: 5.MD.B.2-Represent and interpret data.
OBJECTIVE (EXPLICIT):
 Display numerical data on a number line dot plot.
EVIDENCE OF MASTERY (MEASURABLE):
KEY VOCABULARY: Mean, Median, Mode
MATERIALS: Whiteboards or paper,
Presidential worksheet
ENGAGE (MAKE CONTENT AND LEARNING RELEVANT TO REAL LIFE AND CONNECT TO
STUDENT INTEREST)
BEFORE
TEACHER WILL:
Pre-assessment: Use this quick
assessment to see if students understand
the differences between mean, median,
and mode.
STUDENT WILL:
Discuss and solve the pre-assessment
problem.
Write the three long jump measurements of
two different jumpers on the board and ask
students to determine who is the better
jumper.
a. Jumper A: 220 centimeters,
224 centimeters, 224
centimeters
b. Jumper B: 250 centimeters,
125 centimeters, 250
centimeters
DURING
Note students who do not distinguish the
differences among mean, median, and
mode.
TEACHER WILL:
Draw a horizontal line across the board and
divide it into 10 equal segments labeled 1–
10.
STUDENT WILL:
Use the line as a dot plot to take a quick
survey to see how many books students
read in the last month. Ask each student
Think about how many books they read last
month and place a dot over the correct
number.
and place a dot over the number,
increasing the dots vertically.
When the survey is complete, analyze the
results. Determine the mean (average), the
median (the exact middle) and the mode
(the most frequent value).
Discuss the benefits of using a dot plot to
capture and display data. Ask students
what type of data would and would not be
easy to capture in a dot plot. For example,
a dot plot would not be as helpful as a line
graph to display a growth chart, or it would
not be as helpful as a pie chart to show
parts of a whole.
Discuss questions in Think, Pair, Share
Guided Practice
Divide the class into groups of 3–4
students. Have them each develop a dot
plot that displays the number of pets owned
in the group. Have them calculate the
mean, median, and mode of the data.
Develop a dot plot of number of pets and
find mean, median, mode.
Have each group share its data as you
capture the data in a chart, adding up the
numbers. Then create a class dot plot of
the number of pets.
Calculate the mean, median, and mode of
the class data.
Discuss the advantages of the dot plot
display over the chart.
Discuss the effect of having more data on
the dot plot by comparing the group data to
the class data.
Alternate Activity: Work with students look
through the newspaper for sets of current
data (sports, weather, population, surveys).
Have them extract data related to an
interest; create a dot plot; and calculate the
mean, median, and mode of the data.
Discuss their conclusions about the data
and whether the dot plot was the best way
to represent it.
AFTER
Have them present their findings to the
class.
TEACHER WILL:
Have students complete the independent
practice with dot plots.
STUDENT WILL:
Complete a dot plot of presidential ages at
inauguration and find the mean, median
and mode.
Independent Practice with Dot Plots
Create a dot plot showing ages of Presidents at their inaugurations.
Calculate the range, mean, median, and mode.
President
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
George Washington
John Adams
Thomas Jefferson
James Madison
James Monroe
John Quincy Adams
Andrew Jackson
Martin Van Buren
William Henry Harrison
John Tyler
James K. Polk
Zachary Taylor
Millard Fillmore
Franklin Pierce
James Buchanan
Abraham Lincoln
Andrew Johnson
Ulysses S. Grant
Rutherford B. Hayes
James A. Garfield
Chester A. Arthur
Grover Cleveland
Benjamin Harrison
Age at
Inauguration
57
61
57
57
58
57
61
54
68
51
49
64
50
48
65
52
56
46
54
49
51
47
55
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Grover Cleveland
William McKinley
Theodore Roosevelt
William Howard Taft
Woodrow Wilson
Warren G. Harding
Calvin Coolidge
Herbert Hoover
Franklin D. Roosevelt
Harry S. Truman
Dwight D. Eisenhower
John F. Kennedy
Lyndon B. Johnson
Richard Nixon
Gerald Ford
Jimmy Carter
Ronald Reagan
George H.W. Bush
Bill Clinton
George W. Bush
Barack Obama
55
54
42
51
56
55
51
54
51
60
62
43
55
56
61
52
69
64
46
54
47