AAA Math
Aaa Math: Comparing Fractions
Explains how to compare fractions with unlike numerators and denominators, and includes games to practice this skill.
AAA Math
Aaa Math: Division by 10, 11, and 12
Explains the basic facts for division by 10, 11, and 12. Gives problems and games to practice this skill.
AAA Math
Aaa Math: Subtracting Fractions With Same Denominator
Gives a brief explanation of how to subtract fractions with the same denominator. Gives practice, and games to play to use this skill.
AAA Math
Aaa Math: Identifying Equivalent Fractions
This site gives a brief explanation of how to compare fractions with different denominators. Gives practice and games to play to use this skill.
National Council of Teachers of Mathematics
The Math Forum: Suzanne Alejandre: Factor Lesson
Young scholars will discover factoring through the area of a rectangle.
University of Georgia
University of Georgia: Altitudes & Orthocenters: Making Connections
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
University of California
Geometry Junkyard: Dissection Tiling
A great and very informative article about dissection tiling or tessellation.
Rice University
Galileo Project: Christoff Rudolff
This site from The Galileo Project of Rice University provides ten fields of biographical data which are compiled for you. The fields of data collected include, but are not limited to, dates (birth/death), father (occupation/wealth),...
Rice University
Galileo Project: Pierre Fermat
This site from The Galileo Project of Rice University provides information on ten fields of biographical data which are compiled regarding Pierre Fermat, including dates (birth/death), father (occupation/wealth), nationality, education,...
Wolfram Research
Wolfram Math World: Euclid's Algorithm
This site from Mathworld.com provides a very detailed description of Euclid's algorithm of common divisors and a method of finding the greatest.
Shodor Education Foundation
Shodor Interactivate: Lesson: Fractals
This site provides some links to activities and lesson plans dealing with fractals and chaos.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Definitions of Rational, Irrational
Math Forum definition and explanation of rational and irrational numbers, the definitions of mathematics is also addressed.
Scholastic
Scholastic: Math Maven's Mysteries
Scholastic.com offers information on how to use the Math Maven's Mysteries to enhance problem-solving skills, partly through class discussion. For the actual mysteries, click on Math Maven Home.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: History of Numbers
Dr. Math tackles the question of man's first use of numbers by relating the work of Denise Schmandt-Bessarat and her studies of "'tokens' found all over the Middle East.
Wolfram Research
Wolfram Math World: Congruent
This MathWorld site defines both meanings of the term congruent, also gives the commonly used notation.
Wolfram Research
Wolfram Math World: Dimension
This site from Mathworld.com provides information on what the dimension of an object means.
Wikimedia
Wikipedia: Andre Marie Ampere
This site from the encyclopedia Wikipedia provides a nice overview of the life of Andre Marie Ampere. Content covered includes an overview of his upbringing, his time as professor, and his study of electromagnetism.
Math Medics
S.o.s. Math: Application of Determinant to Systems: Cramer's Rule
This lesson explains how the determinant is used for Cramer's Rule.
The Math League
The Math League: Percent and Probability: What Is a Percent?
This site defines a percent, explains it as a fraction and decimal, and shows how to estimate a percentage.
Trinity College Dublin
Trinity College: Abraham De Moivre (1667 1754)
The events of the life of Abraham de Moivre are presented in a very abbreviated timeline form. The biographical information is taken from "A Short Account of the History of Mathematics" by W. W. Rouse Ball (4th Edition, 1908).
Trinity College Dublin
University of Dublin: Joseph Louis Lagrange (1736 1813)
Information on the mathematical achievements of Joseph Louis Lagrange as well as biographical information.
Trinity College Dublin
Trinity College: James Bernoulli (1654 1705)
The events of the life of James Bernoulli are presented in an abbreviated timeline form. The biographical information is taken from "A Short Account of the History of Mathematics" by W. W. Rouse Ball (4th Edition, 1908).