Lesson plan

Lesson 8: Using Technology for Constructions

teaches Alabama State Standards Geo-30.
teaches Alabama State Standards Geo-29.b.
teaches Alabama State Standards Geo-29.a.
teaches Alabama State Standards Geo-29.
teaches Arizona State Standards G.G-CO.D.13
teaches Arizona State Standards G.G-CO.D.12
teaches Common Core State Standards MP1 http://corestandards.org/Math/Practice/MP1
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 HSG-CO.A.1 http://corestandards.org/Math/Content/HSG/CO/A/1
teaches Colorado State Standards HS.G-CO.D.13.
teaches Colorado State Standards HS.G-CO.D.12.
teaches Georgia State Standards MGSE9-12.G.CO.13.
teaches Georgia State Standards MGSE9-12.G.CO.12.
teaches Kansas State Standards G.CO.11.
teaches Minnesota State Standards
teaches Ohio State Standards G.CO.13.
teaches Ohio State Standards G.CO.12.
teaches Ohio State Standards G.CO.1.
teaches Pennsylvania State Standards CC.2.3.HS.A.4.
teaches Pennsylvania State Standards CC.2.3.HS.A.1.

Lesson 8: Using Technology for Constructions

This lesson is optional.

In this lesson, students who haven't had the opportunity to engage with dynamic geometry technology can learn to use it to make a diagram with digital construction tools that are analogous to a compass and straightedge. Students review constructions they have done on paper and build toward more complex constructions made easier by technology. The work of this lesson connects to upcoming work because students will have the opportunity to use this technology throughout the course. The activity Digital Compass and Straightedge Construction is left open and unstructured intentionally so students have the opportunity to make sense of problems (MP1).

Encourage students who finish an activity early to play, make a composite figure, or recreate a design from a previous lesson.

Lesson overview

  • 8.1 Warm-up: How Do Digital Construction Tools Work? (10 minutes)
    • Digital applet in this activity
  • 8.2 Activity: Digital Compass and Straightedge Construction (15 minutes)
    • Digital applet in this activity
  • 8.3 Activity: More Helpful Digital Tools (10 minutes)
    • Digital applet in this activity
  • Lesson Synthesis
  • 8.4 Cool-down: Is it a Rectangle? (5 minutes) 
    • Digital applet in this activity

Learning goals:

  • Coordinate (orally) technology tools with paper and pencil tools to construct a diagram.

Learning goals (student facing):

  • Let’s use technology to construct a diagram.

Learning targets (student facing):

  • I can use technology to help me construct specific diagrams.

Required materials:

  • Dynamic geometry software

Required preparation:

  • Acquire devices that can run GeoGebra (recommended) or other dynamic geometry technology.
  • It is ideal if each pair of students has a device. (The GeoGebra Construction App and Geometry App are available under Math Tools.)






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