June 19, 2009
Volume 14 No. 25

In This Issue


Maths Online

TierneyLab Puzzles


New!Special Offer
through June 30, 2009 on Problems of the Week class, school, or district memberships when you add a PD online course!


Online PD

The Math Forum's Problem Solving Process

PoW Class Membership: ... Effective Implementation

Teaching Math with the Problems of the Week

Differentiated Math Instruction: Using Rich Problems to Reach All Learners

Problem Solving in Geometry and Measurement, Course 1

Problem Solving in Geometry and Measurement, Course 2

Moving Students from Arithmetic to Algebra

Resources & Strategies for Effective Math in Context (MiC) Implementation

Problem Solving Strategies


Free Online

Tools for Building Math Concepts

For PA teachers preparing for the Praxis II:
Moving to Mathematics, a series of online courses




See real-time data on a host of topics important to daily life around the world:

  • world population (e.g., births this year, deaths today, net population growth for today)
  • government and economics (daily government spending by category; computers sold)
  • society and media (new book titles published, money spent on video games, Google searches)
  • environment (forest loss, carbon dioxide emissions, current average temperature)
  • food (tons of food produced; people who died of hunger)
  • water (water consumed, people with no access to safe drinking water)
  • energy (solar energy striking Earth; oil pumped; oil, gas, and coal left)
  • health (deaths caused by alcohol, suicides, road traffic accident fatalities)

Worldometers' algorithm takes the latest statistical data available from the United Nations (UN), the World Health Organization (WHO), the Food and Agriculture Organization (FAO), and other institutions, and then processes them together with its estimated progression to compute figures current up to the millisecond.

Available in dozens of languages, this site is part of the Real Time Statistics Project. Read more about that here:


Maths Online


We first featured this mathematics learning site over a decade ago. Its gallery of multimedia learning units (Java applets), on math subjects for secondary school, high school, college, and university, has since more than tripled in size. Available in English and German, it offers guided exercises, solutions, and curricular applications of the exercises.

Maths online also provides selected online tools, including scientific calculators; tools for plotting 2D and 3D graphs, differentiating and integrating functions, and solving equations; and links to other useful collections of tools:


The site also lists and describes math links that emphasize interactive learning material.


TierneyLab Puzzles


John Tierney, The New York Times' science columnist, writes challenging word problems that "put ideas in science to the test." Solve and comment on the puzzles and their extra credit extensions.

See also Tierney's blog entries on mathematics:



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

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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.

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