Curriculum  /  Math  /  3rd Grade  /  Unit 7: Measurement  /  Lesson 12

Measurement

Lesson 12

Math

Unit 7

3rd Grade

Lesson 12 of 12

Objective

Solve word problems involving volumes given in the same unit.

Common Core Standards

Core Standards

  • 3.MD.A.2 — Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem. Excludes multiplicative comparison problems (problems involving notions of "times as much"; Excludes compound units such as cm³ and finding the geometric volume of a container.

Criteria for Success

  1. Make sense of a three-act task and persevere in solving it (MP.1).
  2. Solve word problems involving volumes given in the same unit (MP.4). 

Tips for Teachers

  • The Anchor Tasks included in this lesson can be seen as two-step problems, which go beyond the scope of 3.MD.2. However, given students’ extensive work with two-step word problems in Units 1, 2, and 3, as well as their work with more complex problems involving time in Topic A, two-step word problems seem accessible and appropriate for students. You may decide to cut these problems, however, and use the one-step problems related to volume included in EngageNY Grade 3 Module 2 Lesson 11 Concept Development. Cut the analogous problems from the Problem Set and Extra Practice Problems, as well. 
  • While not explicitly listed in the standards aligned to this lesson, this work of solving word problems involving volumes (3.MD.2) connects to the work of fluently adding and subtracting within 1,000 (3.NBT.2), multiplying and dividing within 100 (3.OA.7), as well as solving one- and two-step problems involving all four operations (3.OA.8).
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Anchor Tasks

25-30 minutes

Problem 1

Act 1: Watch the video Let It Flow (Act-1).

a.   What do you notice? What do you wonder?

b.   How long will it take for the soda bottle to empty? Make an estimate. 

Guiding Questions

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Student Response

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References

Questioning My Metacognition Let It Flow

Let It Flow by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed April 1, 2019, 1:51 p.m..

Modified by Fishtank Learning, Inc.

Problem 2

Act 2: Use the following information to determine how long it will take for the bottle to empty into the jar.

  • The bottle has 2,000 mL of liquid in it. 
  • 100 mL of water flows out in 11 seconds. 

Guiding Questions

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Student Response

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References

Questioning My Metacognition Let It Flow

Let It Flow by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed April 1, 2019, 1:51 p.m..

Modified by Fishtank Learning, Inc.

Problem 3

Act 3: Watch Let It Flow (Act-3). Was your estimate reasonable? Why or why not? 

Guiding Questions

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Student Response

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References

Questioning My Metacognition Let It Flow

Let It Flow by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed April 1, 2019, 1:51 p.m..

Problem 4

Act 4 (the sequel):  Raul has orange juice and milk to drink at breakfast. He drinks 237 mL of milk. He also drinks 60 mL less orange juice than milk. How much does Raul drink at breakfast, including milk and juice?

Guiding Questions

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Student Response

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Problem Set

15-20 minutes

Discussion of Problem Set

  • What models did you use to solve the word problems?
  • How much honey is in the beaker, rounded to the nearest 100 milliliters? How does the measurement scale on the container help with rounding the amount to the nearest 100 milliliters?
  • What made #6 and #8 more challenging to solve than the other problems?

Target Task

5-10 minutes

Problem 1

A chef makes 30 liters of pancake batter. He equally splits the pancake batter into some containers. The amount of pancake batter in each container is shown below. 

How many containers did the chef use to hold all of the pancake batter?

Student Response

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Problem 2

Elijah uses 275 mL of milk for a recipe. He has 367 mL of milk left. How much milk did Elijah have before using some for his recipe?

Student Response

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Additional Practice

The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.

Word Problems and Fluency Activities

Word Problems and Fluency Activities

Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.

Lesson Map

A7CB09C2-D12F-4F55-80DB-37298FF0A765

Topic A: Time Measurement

Topic B: Mass and Liquid Volume Measurement

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