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ORC Resource Number #3
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Geometric Solids and Their Properties
Best Practice
PROFESSIONAL COMMENTARY

In this interactive geometry investigation, students explore geometric solids and their properties. There are five parts to the investigation that include the rotation of shapes on the computer screen as well as plans for straw "construction" of solids and patterns for "nets." The site includes a "Thoughts for Teachers" section and downloadable student materials. Use of this resource will be most effective when coupled with "hands-on" manipulation of solid figures. Patterns for the solids can be found at http://www.korthalsaltes.com/. (author/pk)

CAREER APPLICATION

This five-part lesson features online applets for exploring the geometric solids along with student sheets for paper-and-pencil explorations. The materials should be of particular interest to students in the Construction and Manufacturing Technologies career-technical fields. Using the online tool, students can examine the geometric solid shapes, learn the correct names and formulas relating the number of faces and vertices for each solid, and investigate how the solids related to each other. Drafting students should find the information. There are links to additional resource materials.

TECHNOLOGY INTEGRATION
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OHIO STANDARDS
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Mathematics Academic Content Standards
Geometry and Spatial Sense Standard
Patterns, Functions and Algebra Standard
Mathematical Processes Standard
NATIONAL STANDARDS
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Principles and Standards for School Mathematics
Algebra Standard
Geometry Standard
Reasoning and Proof Standard
RESOURCE TYPE
Instructional Resource
PRACTICE LEVEL
Best Practice
STANDARDS ALIGNMENT
Grades 3–10
CAREER FIELDS
Arts & Communication;
Construction Technologies;
Manufacturing Technologies
TOPICS
Mathematics --
Algebra;
Patterns, sequences;
Geometry;
Models, construction;
Spatial relationships;
Solid figures;
Reasoning and Proof;
Technology;
KEYWORDS
Euler's formula;
applet
Publisher: National Council of Teachers of Mathematics
Author: Dorothy L. Keane