# Fractions

## Objective

Generate measurement data and represent it in a line plot.

## Common Core Standards

### Core Standards

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• 3.MD.B.4 — Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch. Show the data by making a line plot, where the horizontal scale is marked off in appropriate units— whole numbers, halves, or quarters.

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• 2.MD.A.1

• 2.MD.D.9

## Criteria for Success

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1. Measure objects to the nearest quarter inch with a ruler whose 0 mark is not at its edge (MP.6).
2. Record and show the data by making a line plot where the horizontal scale is marked off in appropriate units—whole numbers, halves, or fourths.
3. Answer interpretive questions about data in a line plot that do not involve the use of operations to solve (e.g., what is the largest recorded value?) (MP.2).
4. Understand the purpose of a line plot as a way to represent a measurement data set to be able to see trends and analyze it more easily (MP.5).

## Tips for Teachers

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• This lesson has students generating measurement data from taking length measurements as a way to reinforce the work of Lesson 26. However, measurement data can include measures of a variety of other attributes, such as “measuring liquid volumes with graduated cylinders or measuring room temperatures with a thermometer” (MD Progression, p. 2). Thus, you could decide to swap out the following length measurement tasks with measurement of other types if you think students would benefit from seeing how other types of measurement can be displayed on a line plot, e.g., area measurement. Regardless of the focus on length measurement in this lesson, students will see line plots that display measurement data of a wider variety in Lesson 28.
• Students will need a ruler for the Homework.

#### Fishtank Plus

• Problem Set
• Student Handout Editor
• Vocabulary Package

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### Problem 1

Hui works at the Franklin Park Zoo. Below are all of the beetles in the beetle exhibit.

1. Hui is trying to figure out how many adult beetles versus baby beetles there are. Adult beetles are $\frac{3}{4}$ inch long or longer. How many of the beetles above are adults?
2. A visitor to the zoo asks what the most common length of an adult beetle is. Based on the beetles in the exhibit, what should Hui’s answer be?

#### References

San Francisco Unified School District Math Department 3.10 LS3 Day 2 Line Plot Measurements BLM

3.10 LS3 Day 2 Line Plot Measurements BLM is made available by the San Fransisco Unified School District Math Department as a part of their SFUSD Math Core Curriculum under a CC BY 4.0 license. Accessed April 2, 2019, 4 p.m..

Modified by The Match Foundation, Inc.

### Problem 2

Make a line plot using the data from Anchor Task #1. Remember to label all parts of your line plot.

#### References

San Francisco Unified School District Math Department 3.10 LS3 Day 2 Line Plot Measurements BLM

3.10 LS3 Day 2 Line Plot Measurements BLM is made available by the San Fransisco Unified School District Math Department as a part of their SFUSD Math Core Curriculum under a CC BY 4.0 license. Accessed April 2, 2019, 4 p.m..

Modified by The Match Foundation, Inc.

## Problem Set & Homework

#### Discussion of Problem Set

• Was it easier to determine the most frequent measurement in #2a in the table or the line plot? Why? How does this help demonstrate the usefulness of line plots?
• What length granola bar would you recommend to the Chewy Chunk Granola Bar Company in #4c? Why?

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Heather is measuring the length of strips of paper to the nearest quarter inch. The lengths she has measured so far are in the table below. Measure the remaining paper strips and add their lengths to the table. Then use the data to draw a line plot below.

#### References

Achievement First Grade 3, Unit 6, Lesson 6 (2017-2018)Exit Ticket

Grade 3, Unit 6, Lesson 6 (2017-2018) is made available by Achievement First as a part of their Open Source web portal under a CC BY 4.0 license. Copyright © 1999-2017 Achievement First. Accessed April 2, 2019, 4:05 p.m..

Modified by The Match Foundation, Inc.

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