Geometry: Let's Face It

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In this math lesson, learners identify, describe, and construct the five regular polyhedra. Learners are introduced to the idea of three-dimensional figures by first reviewing polygons and regular tessellations. Comparisons are made between regular tessellations and five special polyhedra, the Platonic Solids. Using nets as blueprints, learners construct the polyhedra and record the number of faces, edges, and vertices of each. Finally, they identify a relationship between the number of faces, edges, and vertices (Euler's formula).

Quick Guide

Preparation Time:
5 to 10 minutes
Learning Time:
45 to 60 minutes
Estimated Materials Cost:
$1 - $5 per group of students
Age Range:
Ages 11 - 14
Resource Types:
Activity, Lesson/Lesson Plan
Language:
English

Materials List (per group of students)

Keywords

Subjects

  • Mathematics
    • Algebra
      • Equations and Inequalities
      • Patterns
    • Data Analysis and Probability
      • Data Analysis
      • Data Collection
      • Data Representation
    • Geometry
      • Plane Geometry
      • Solid Geometry
    • Number and Operations
      • Operations
    • Reasoning and Proof
  • The Nature of Technology
    • The Design Process
      • Problem Solving

Audience

To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other

This resource is part of:

Access Rights:

  • Free access

By:

Rights:

  • All rights reserved, PBS, 2012

Funding Source:

  • US Department of Education