Shapes and Volume

Lesson 8

Math

Unit 3

5th Grade

Lesson 8 of 16

Objective


Solve a three-act task involving volume.

Common Core Standards


Core Standards

  • 5.MD.C.5 — Relate volume to the operations of multiplication and addition and solve real world and mathematical problems involving volume.

Criteria for Success


  1. Make sense of a three-act task and persevere in solving it (MP.1). 
  2. Connect the idea of “packing” solid units into a container to measure volume with the idea of “filling” a container with a liquid to measure volume. 

Tips for Teachers


  • This lesson’s three-act task addresses the idea of “filling” volume. As the Geometric Measurement Progression states, “solid units are ‘packed,’ such as cubes in a three-dimensional array, whereas a liquid ‘fills’ three-dimensional space, taking the shape of the container… The unit structure for liquid measurement may be psychologically one-dimensional for some students” (GM Progression, p. 26).
  • In addition to addressing the idea of filling volume, this lesson’s three-act task also relies somewhat on the idea that volume is additive, which provides a nice preview of tomorrow’s work on that concept. 
  • There is no Problem Set or Extra Practice Problems for this lesson. There are a few options for what you could do in their place:
    • Explore the idea of filling versus packing volume in greater detail. EngageNY Grade 5 Unit 5 Lesson 5 is a great resource to do so. 
    • Use some of the more challenging problems from the Problem Set and Extra Practice Problems from Lesson 6, like problems 8+ on the Problem Set and Homework. 
    • Review concepts of volume explored thus far in the unit. Here are a few resources to do so:
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Anchor Tasks

25-30 minutes


Problem 1

Act 1:

Watch the video Overflow (Act-1).

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

b.   How many small cubes will it take to fill the large rectangular prism? Make an estimate.

Guiding Questions

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Student Response

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References

Questioning My Metacognition Overflow

Overflow by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed Feb. 6, 2018, 10:58 a.m..

Modified by Fishtank Learning, Inc.

Problem 2

Act 2: Use the following information to determine how many small cubes will it take to fill the large rectangular prism. 

       

Guiding Questions

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Student Response

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References

Questioning My Metacognition Overflow

Overflow by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed Feb. 6, 2018, 10:58 a.m..

Modified by Fishtank Learning, Inc.

Problem 3

Act 3: Watch Overflow (Act 3) to see the solution. Was your estimate reasonable? Why or why not?

Guiding Questions

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Student Response

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References

Questioning My Metacognition Overflow

Overflow by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed Feb. 6, 2018, 10:58 a.m..

Modified by Fishtank Learning, Inc.

Problem 4

Act 4 (sequel): You have another rectangular prism with the same volume as the (empty) prism from Anchor Tasks 1-3. But, it has different dimensions. What might those dimensions be? How many different possibilities are there? 

Guiding Questions

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Student Response

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Target Task

5-10 minutes


Asad and Margalita have pools in the shape of rectangular prisms that each hold 576 cubic feet of water. The bottom of Asad’s pool has an area 96 sq ft. The bottom of Margalita’s pool has an area 72 sq ft. Whose pool is deeper? How much deeper? Show or explain your work.

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.

Next

Understand that volume is additive. Find the volume of composite solid figures when all dimensions are given and their decomposition is already shown.

Lesson 9
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Lesson Map

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Topic A: Volume of Three-Dimensional Figures

Topic B: Classification of Two-Dimensional Shapes

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