September 7, 2007 Volume 12 No. 36

In This Issue

Drawing a Crop Circle

Mr. Beneli's Website

Build It Bigger

Free Online
Opportunities

For teachers of students in grades 3-5:
Tools for Building Math Concepts

For teachers of students in grades 5-9:
Using Technology and Problem Solving to Build Algebraic Reasoning

For all students:
tPoWs

For students in grades 9-10:
the MathMentor

 Drawing a Crop Circle http://centros.edu.xunta.es/iesramoncabanillas/origcrop/principal.htm To draw a crop circle, the high school students at IES Ramon Cabanillas (Cambados, Pontevedra, Spain) calculated ellipses and discovered the pentagram's relation to the golden mean. Sections of their website are: All designs The winning design Previous practice T-shirt Who makes crop circles? Original design on the field Calculations Spanish and Galician versions are also available. Mr. Beneli's Website http://edweb.tusd.k12.az.us/ibeneli/flash.html Mr. Beneli offers a variety of Flash activities developed for his algebra students. Modeling Addition Integers Fractions Comparing Fractions Percents The Real Number Line Plotting Points Slope Linear Equations in Slope-Intercept Form Linear Inequalities The Slope Game Linear Equations and Their Graphs: Quiz Game Function Machine Probability Triangle Absolute Value Absolute Value Puzzle (easy) (difficult) Mastermind Build It Bigger http://www.discovery.com/builditbigger/ Build It Bigger is a new television program on the Discovery Channel this season. Even if you are not viewing the program you might find the "Project Pages" interesting. They list numerical data on: USS Donald Cook Fenway Park Coaster Shanghai World Financial Center M1 Abrams Tank The City of Culture

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.

Texas Instruments
is a sponsor of
the Math Forum

Shop@The Math Forum