January 13, 2006
Volume 11 No. 2

In This Issue

Rhombic Dodecahedron

Math Doodles

What's the Problem?


Rhombic Dodecahedron - Hidden Within or Surrounding the Cube?


In this classroom activity, a PCMI Resource for Teachers, the interconnections between a cube and a rhombic dodecahedron are illustrated. The authors, Joyce Frost and Kris Koch, list these objectives:

  • Increase students' and teachers' understanding of important geometrical concepts through the construction and analysis of three-dimensional models.
  • Analyze and compare properties of the cube and its corresponding rhombic dodecahedron by dissecting and transforming the solid cube.
  • Develop mathematical arguments about geometric relationships of the cube and its corresponding rhombic dodecahedron.

View other PCMI Resources for Teachers:


PCMI is an outreach program of the School of Mathematics at the Institute for Advanced Study. Geometry is the theme of one of six working groups meeting this summer in June/July. For more information on the program, view the PCMI @ MathForum site:


The Institute for Advanced Study is accepting applications through February 15, 2006 for the Summer Session 2006 Program.

Math Doodles


Daren Carstens designs and presents Flash activities "to provide a place where children can discover the joy, wonder, and fun of mathematics."

Demo activities include:

  • Connect Sums
  • Number Jump
  • Polyomino Shift
  • Double Traits
  • Sums Stacker
  • Hydro Maze
  • Time Shuffle

What's the Problem? Geometry & Art Through the Ages


Based on the collection of the Indianapolis Museum of Art, "What's the Problem?" explores how some artists have used geometry as a creative tool. The site is divided into three topics:

  • lines
  • polygons
  • volume

Also provided as links from the left sidebar are a glossary and a list of references for further reading.

Besides this high school version, a middle school version is also available:



This newsletter is provided as a service of The Math Forum, an online educational community for mathematics hosted by Drexel University, Philadelphia, PA.

You're receiving this e-mail because you are subscribed to the newsletter. This is a recurring mailing. You have the option to receive this newsletter in either html or plain text formats. To unsubscribe from future mailings, change your subscription, or browse all newsletters, please see our newsletter web archive.

The Math Forum is also home to Ask Dr. Math, Problems of the Week, MathTools, Teacher2Teacher, the Internet Math Library, math discussion groups, and over 1,000,000 pages of mathematics information and discussions.

The Math Forum
is sponsored in part by
Texas Instruments

Copyright © 2006 Drexel University. All Rights Reserved. 800-756-7823
Contact Us
| Back Issues | Subscribe/Unsubscribe