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Unit 9, Lesson 4

Measure and Plot

Grade 2

Warm-up

Notice and Wonder: Line Plots

What do you notice? What do you wonder?

patient	foot length in centimeters
A	12
B	18
C	20
D	18
E	18
F	20
G	17
H	21

Line plot titled Length of Patient's Feet from 11 to 22 by ones.

Are You Ready for More?

Activity 1

May I Sharpen My Pencil?

group	length of pencils in centimeters				total length
A	8	13	12	7
B	9	15	7	10
C	12	13	8	6
D	9	9	11	13
E

Measure the length of your pencil. _______ cm
Write the lengths of your group’s pencils in the last row of the table.
Find the total length of each group’s pencils.

Activity 2

A Plot Twist

Use the pencil measurements to create a line plot.
What is the most common pencil length? _______
What is the shortest pencil length? _______
How many pencils are longer than 10 cm? _______
What is the difference between the longest pencil and the shortest pencil? Write an equation to represent the difference.
What is the difference between the shortest pencil and the length of an unsharpened pencil? Write an equation to represent the difference.

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