June 27, 2008
Volume 13 No. 26

In This Issue


The Number Empire

Maths Teaching Ideas

Free Online

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

For teachers of students in grades 5-9:
Technology Tools for Thinking and Reasoning about Probability

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

For all students:


10% Discount
Through this Monday, June 30, 2008, receive a 10% discount on Problems of the Week class, school, or district memberships and/or our new PD online courses



The SmartBoardWiki is a venue where teachers can read, discuss, and increase their experience with SmartBoard technology.

Sections include:

  • Welcome
  • Goals
  • Hardware FAQs
  • PD Materials
  • SMART Use Checklist
  • Lesson Creation
  • Advanced Integration
  • Resources
  • Miscellaneous
  • Teacher Notebook Lessons
  • Tutorials
  • The authors ask for your input and contributions.

The Number Empire


Enter a positive integer up to 10^12, press the "Go!" button, and The Number Empire states -- in yes/no format -- whether you entered a prime number, a Bell number, a Catalan number, or a factorial. The same single click displays the integer written out in words, as well as in binary, octal, and hexadecimal; and calculates its sine, cosine, and square root.

Vitalii Vanovschi also offers:

    Math tools:
Derivative calculator
Integral calculator
Limit calculator
Number factorizer
LaTeX equation editor
    Number theory:
Prime numbers
Fibonacci numbers
Bernoulli numbers
Euler numbers
Factorial calculator

Maths Teaching Ideas


This site contains freely accessible lesson ideas, activities and resources. The Maths section is organized under:

  • General Maths
  • Mental Starters
  • Problem Solving
  • Assessment
  • Number / Place Value
  • Number Patterns
  • Addition / Subtraction
  • Multiplication / Division
  • Fractions / Dec's / %
  • Money
  • Shape
  • Measure
  • Data Handling
  • Maths Displays
  • Share Your Ideas


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.

Texas Instruments
is a sponsor of
the Math Forum

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