18 December, 2009
Volume 14 No. 51

In This Issue

KenKen Clarification

PNC Christmas Price Index


Math Playground


Online PD

PoW Class Membership: ... Effective Implementation

The Math Forum's Problem Solving Process

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, Courses 1, 2, 3, and 4

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


KenKen Clarification


The Math Forum's KenKen service is free. If you are not already a Problems of the Week (PoW) member, register for the free KenKen service here:


If you already have a PoW membership, no additional action is necessary on your part to access the KenKen materials--just enter your PoW login information where prompted.

We apologize for any confusion in last week's message.

PNC Christmas Price Index


For the past 26 years, PNC Bank has produced a summary of the cost of all the gifts involved in the song "The Twelve Days of Christmas." This can be used as an engaging way of presenting economics concepts.

For 2009, PNC has enlisted a group of children to help deliver the information. The updated site includes a video presentation, an interactive chart, and fun games and activities that can be used for:

  • A discussion on inflation
  • A math lesson about reading charts
  • A history lesson on wages for skilled and unskilled workers

New this year: get fun facts and trivia about each of the gifts in the "Twelve Days of Christmas."

Twelve Days of Math Lessons


Eric O'Brien, of the Shore Road School, Bellmore, NY, has taken this carol to his classroom, and started a discussion on the middle school (grades 5-8) discussion group of the Association of Math Teachers of New York State, hosted at the Math Forum. (Eric serves as Middle School Representative to AMTNYS's board.) Discussants have explored financial and number- theoretical aspects of the scenario. Read their views and share your own using the link above--free registration is required to participate in the discussion. Look for the threads beginning "Tis the Season."

The thread resulting from Eric's initial post is here:


Statistical Assessment Service (STATS)


STATS is a non-profit, non-partisan resource on the use and abuse of science and statistics in the media. Its goals are to correct scientific misinformation in the media and in public policy resulting from bad science, politics, or a simple lack of information or knowledge; and to act as a resource for journalists and policy makers on major scientific issues and controversies.

  • Materials (analysis, articles)
  • STATS Blog
  • STATS Simplified (essential statistics concepts)
  • Resource Links

Math Playground


Math Playground is a mathematics learning site sponsored by the Math Advantage Learning Center for students in grades K-6. Since we first featured them in 2003, their free offerings of learning activities have expanded greatly, and now include a section of videos on math topics.

  • math games
  • word problems
  • logic puzzles
  • math videos
  • thinking blocks
  • computation
  • flashcards
  • math worksheets
  • manipulatives


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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