An interactive site with exercises and basic information covering K-12 arithmetic, fractions, integers, decimals, algebra, geometry and statistics. Also: practical math: converters for currency, temperature, distance,...

This website is an excellent resource for math teachers teaching any age and level of students. The National Council of Teachers of Mathematics (NCTM), "support[s] teachers to ensure equitable mathematics learning of the...

Java applets: an area "workshop," which explains area and division by converting numbers in area units; an architect's toy blocks, with gravity; connecting and programming elementary logic (in the form of pipes with...

This algebra lesson helps students explore polynomials by solving puzzles. The activity explains the relationship between expanding and factoring polynomials, as well as factoring trinomials, and multiplying monomials...

A 5-week unit for middle school teachers. Problems involve computations with addition, subtraction, multiplication, and division, designed to give students an idea of how much money is needed to survive with a family or...