Three-Dimensional Measurement and Application

Lesson 17

Math

Unit 6

10th Grade

Lesson 17 of 18

Objective


Apply density concepts to surface area and volume problems.

Common Core Standards


Core Standards

  • G.GMD.A.3 — Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems.
  • N.Q.A.2 — Define appropriate quantities for the purpose of descriptive modeling.
  • N.Q.A.3 — Choose a level of accuracy appropriate to limitations on measurement when reporting quantities.
  • G.MG.A.2 — Apply concepts of density based on area and volume in modeling situations (e.g., persons per square mile, BTUs per cubic foot). Modeling is best interpreted not as a collection of isolated topics but in relation to other standards. Making mathematical models is a Standard for Mathematical Practice, and specific modeling standards appear throughout the high school standards indicated by a star symbol (★). The star symbol sometimes appears on the heading for a group of standards; in that case, it should be understood to apply to all standards in that group.

Foundational Standards

  • A.CED.A.2
  • 8.G.C.9

Criteria for Success


  1. Define density as the amount of one quantity per square or cubic unit of another. 
  2. Identify a general plan for the solution of problems and revise this plan as necessary throughout. 
  3. Describe the level of precision necessary at different stages of the problem to determine the most accurate answer.
  4. Identify information that is necessary to determine an accurate solution.
  5. Describe how you will assess whether your solution is reasonable or not. 
  6. Justify the solution and process of solving the problem.

Tips for Teachers


The criteria for success are genereally repeated in Lessons 16–18, which all focus on modeling. In Lesson 17, we are focusing on applications of volume and surface area in relation to density.

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Anchor Problems

25-30 minutes


Problem 1

Below is a mockup of an aerial view of the proposed Apple headquarters. Twelve thousand people are proposed to work at the headquarters.

What is the population density when all the employees are at the headquarters?

Guiding Questions

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References

101Questions Apple Mothership

Apple Mothership by Dan Meyer is made available on 101Questions under the CC BY 3.0 license. Accessed June 2, 2017, 4:45 p.m..

Modified by Fishtank Learning, Inc.

Problem 2

A cylindrical soda can is made of aluminum. It is approximately $$4\frac{3}{4}$$ inches high and the top and the bottom has a radius of approximately $$1\frac{3}{16}$$ inches. 

  1. Find the approximate surface area of the soda can. What assumptions do you use in your estimate?
  2. The density of aluminum is approximately 2.70 grams per cubic centimeter. If the mass of the soda can is approximately 15 grams, how many cubic centimeters of aluminum does it contain?
  3. Use the answers to parts (a) and (b) to estimate how thick the aluminum can is. 

Guiding Questions

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References

Illustrative Mathematics How Thick Is a Soda Can? Variation I

How Thick Is a Soda Can? Variation I, accessed on June 2, 2017, 4:52 p.m., is licensed by Illustrative Mathematics under either the CC BY 4.0 or CC BY-NC-SA 4.0. For further information, contact Illustrative Mathematics.

Target Task

5-10 minutes


A gigantic key lime pie was made and served to Bostonians in South Station. The pie was cylindrical with a diameter of 9 feet, weighed about one thousand pounds, and was about 8 inches tall. If 2,000 people were served, how many pounds was each person given? What was the fraction of the gigantic pie that each person received? 

References

Yummy Math Huge Key Lime Pie

Huge Key Lime Pie by Brian Marks and Lesie Lewis is made available on YummyMath. Copyright © 2017 Yummy Math. All Rights Reserved. Accessed June 2, 2017, 4:20 p.m..

Modified by Fishtank Learning, Inc.

Additional Practice


The following resources include problems and activities aligned to the objective of the lesson that can be used for additional practice or to create your own problem set.

Next

Apply constraints on volume, surface area, or cost to solve design problems with three-dimensional figures.

Lesson 18
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Lesson Map

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Topic A: Area and Circumference of Circles

Topic B: Three-Dimensional Concepts and General Volume

Topic C: Cavalieri's Principle, Spheres, and Composite Volume

Topic D: Surface Area, Scaling, and Modeling with Geometry

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