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Lesson plan

Lesson 22: Now What Can You Build?

teaches Common Core State Standards MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards MP5 http://corestandards.org/Math/Practice/MP5
teaches Common Core State Standards HSG-CO.D.12 http://corestandards.org/Math/Content/HSG/CO/D/12
teaches Common Core State Standards HSG-CO.D.13 http://corestandards.org/Math/Content/HSG/CO/D/13
teaches Common Core State Standards MP6 http://corestandards.org/Math/Practice/MP6

Lesson 22: Now What Can You Build?

This lesson is optional because it goes beyond the depth of understanding required to address the standards.

Towards the beginning of the unit, students had the opportunity to create their own patterns and reproduce the patterns of others. Now that they have more experience with straightedge and compass constructions, they may have new ideas about creating designs. This would be a good opportunity to compare student work from a previous lesson in order to show progress. When students write their own instructions, they will need to attend to precision (MP6).

Technology isn't required for this lesson, but there are opportunities for students to choose to use appropriate technology to solve problems. We recommend making technology available.

The designs from the blackline master in this lesson are used with permission from the author, and come from: Baroody, J. (2016). Geometry construction project. Retrieved from https://baroody.org/GeometryHonors/Miscellaneous/Construction%20Project.pdf

Lesson overview

  • 22.1 Warm-up: Notice and Wonder: Dramatic Designs (5 minutes)
  • 22.2 Optional Activity: Duplicate a Design (15 minutes)
  • 22.3 Optional Activity: Make Your Own Design (15 minutes)
    • Includes "Are you Ready for More?" extension problem 
  • 22.4 Optional Activity: Make Their Design (15 minutes)
  • Lesson Synthesis

Learning goals:

  • Create a new geometric pattern using construction techniques.
  • Create a pattern from instructions (in written language).
  • Describe (in writing) how to recreate a pattern.

Learning goals (student facing):

  • Let’s construct some creative shapes.

Learning targets (student facing):

  • I can follow directions to construct a pattern.

Required materials:

  • Copies of blackline master
  • Geometry toolkits


  • This lesson builds on the standards:  CCSS.HSG-CO.A.1MS.G-CO.1CCSS.HSG-CO.D.12MS.G-CO.12CCSS.HSG-CO.D.13MS.G-CO.13MO.G.CO.A.1MO.G.CO.D.11






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