July 20, 2007
Volume 12 No. 29

In This Issue

Interactive Tests - Ron Knott

Zome - Educators

Truncated 120-cell

Mathgrad Podcast


Interactive Tests - Ron Knott


Ron Knott has begun producing Mathematics A and AS Level tests for the independent UK curriculum development body, Mathematics in Education and Industry. The web-based format of the tests let you view a problem and then

  • choose an answer from a multiple choice window
  • request feedback
  • try again
  • view the answer
  • view a model solution that fully explains the answer

Knott's tests mark solutions "intelligently" -- they accept "sqrt(3)/2" or "0.8660" -- and change the question on the topic of the page randomly.

The topics that Knott offers include:

  • Powers and Logarithms
  • Graphs
  • Sequences and Series
  • Review of Algebra
  • Simultaneous Equations
  • Solving Inequalities
  • Coordinate Geometry
  • Trigonometry
  • Polynomials
  • Differential Equations
  • Complex Numbers
  • Vectors
  • Matrices
  • Mechanics
  • Statistics

Zome - Educators


Zome is a precision-molded ball-and-stick construction system that "models spatial structures representing hyperspaces of up to 61 dimensions, geodesic space-frame structures, molecular models, including quasicrystals and Fullerenes."

The Zome website is organized into the following sections:

  • Learn about Zome
  • Zome in Schools
          Benefits for Students
          Outreach Program
  • Teaching with Zome
          Zome Teaches...
          Which Kits to Use
          Magic of Bubbles
          Zome Geometry
          Lesson Plans, free to download in PDF format
          Challenge Cards, free to download in PDF format
  • Teaching Products
          Kits & Bundles
  • Educator Snapshots
          George Hart
          R.F. Tennant, Ph.D.
          Helmer Aslaksen
          Henri Picciotto
          Ken Berry
  • News, Links & More
  • Discussion Group

Truncated 120-cell


One of the activities at this summer's Secondary School Teachers Program in the Park City Mathematics Institute was the construction of a truncated 120-cell using Zomes. View both an explanation of the mathematics and photos of the construction.

Mathgrad Podcast


One of the goals of Mathgrad Podcast is to provide a place "...to discuss the mathematics behind many real life topics in a way that even the worst mathphobe will gain some insight." Topics range from the math underlying voting schemes to the mathematics of loan payments.

Sections include:

  • Mathgrad Podcast Archives
  • For Mathematics Educators
  • Frapper Map
  • Listen to Promo
  • Contact the Mathgrad
  • Leo Laporte Interview
  • What's a Podcast?
  • Links
  • About the Intro Music
  • Other Great Podcasts


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