January 16, 2009
Volume 14 No. 3

In This Issue

PCMI Applications Reminder

Geometric Arts

AAA Math

Fractal Music


Online PD

Moving Students from Arithmetic to Algebra

Teaching Math with the Problems of the Week

The Math Forum's Problem Solving Process


Free Online

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

Technology Tools for Thinking and Reasoning about Probability


REMINDER: IAS/PCMI Applications, Summer 2009


Don't miss the deadline! Applications for the 2009 Summer Session of the IAS/Park City Mathematics Institute close Wednesday, January 28, 2009. See also:


Geometric Arts


A site dedicated to geometry and visual perception: patterns, fractals, structures, rotations, spirographs, optical arts, knots, and more. Some constructions include the artist's reflections, instructions, and links to related sites and interactive applets.

AAA Math


AAA Math, which we first featured in 2001, has launched a Spanish language version of its site here:


The site features online interactive lessons, exercises, practice, and games about basic arithmetic concepts and methods, for grades K-8.

Topics include: addition, comparing quantities, counting, decimals, division, estimation, factors, fractions, money, multiplication, naming numbers, ordinal numbers, percent, place value, positions, properties, ratios, and subtraction.

Fractal Music


In 2003, Benoit Mandelbrot suggested to Harlan Brothers that he undertake a rigorous treatment of the subject of fractal music. Here is an overview of Brothers' subsequent research, including papers, definitions, and examples.

Brothers offers a day-long workshop based on his work, developed from a lecture and lab he first offered at Yale:



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