Three-Dimensional Measurement and Application

Lesson 5

Math

Unit 6

10th Grade

Lesson 5 of 18

Objective


Define a general cylinder and general cone. Identify two-dimensional shapes that when revolved will form a cylinder.

Common Core Standards


Core Standards

  • G.CO.A.1 — Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
  • G.GMD.B.4 — Identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify three-dimensional objects generated by rotations of two-dimensional objects.

Foundational Standards

  • 7.G.A.3

Criteria for Success


  1. Describe a general cylinder as a three-dimensional figure with a curved, parallelogram face and two parallel bases. A cylinder is not a polyhedron. 
  2. Describe a right cylinder as a figure where all of the line segments joining the two bases are perpendicular to the bases.
  3. Describe an oblique cylinder as a figure where all the line segments joining the two bases are not perpendicular to the bases.
  4. Describe a cone as a figure where all of the line segments stemming from the circular base join at an apex. 
  5. Compare cylinders to prisms and cones to pyramids.
  6. Describe the three-dimensional, non-polyhedron shape formed when a two-dimensional shape is spun on an axis.
  7. Describe how changing the axis on which the figure is revolved changes the three-dimensional shape formed.

Tips for Teachers


This lesson covers key concepts in the unit to get students thinking about solids of revolution and the underpinnings of Cavalieri’s principle. It may be tempting to jump right into volume, but volume is better saved for the next lesson in order to focus solely on the key definitions of cylinder and cone in this lesson. 

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Anchor Problems

25-30 minutes


Problem 1

What do the figures below have in common? How are they different?

Guiding Questions

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Problem 2

Allison made several paper flags.

Which of these will make a cylinder when spun on the post of the flag? Explain your reasoning.

Guiding Questions

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Target Task

5-10 minutes


Is this a cylinder? Explain why or why not.

References

EngageNY Mathematics Geometry > Module 3 > Topic B > Lesson 6Exit Ticket, Question #1

Geometry > Module 3 > Topic B > Lesson 6 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..

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.

  • Include problems with error analysis around the solids of revolution. For example, give students a drawing that has a rectangle with one side not on the $$y$$-axis but the rectangle rotated around the $$y$$-axis. Ask students how this would be different from the cylinders they have seen thus far.

Next

Use volume concepts and formulas to analyze and solve multistep problems with cylinders and prisms.

Lesson 6
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Lesson Map

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

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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