- Factor Game
A challenging game in which players need to think of all of the factors of selected numbers.
With this applet, the connection between factors and dimensions of a rectangle is made as students build rectangles to match a factorization of a number.
- Figure This! Math Challenges for Families
A wonderful collection of exploration that is available for free. The 80 challenges are designed for middle grades students. Although not simple story problems, many involve an understanding of the operations. Each problem has interesting follow-up questions, and all are designed to engage students in real-world applications of mathematics.
This site provides many games and opportunities for children to learn and practice the operations at all grades and ability levels. Once the appropriate difficulty and grade levels are set, most children can work on the activities independently.
The Eisenhower National Clearinghouse site provides links to activities and lessons on number computation.
This site is excellent for very young students developing what it means to do addition. The colorful representations, using part-part-whole problems, can help the most basic math student begin to understand what adding means.
This site contains many links to many lessons that will help your students practice their addition and subtraction, fraction and decimal computations, activities in geometry, measurement, patterns and relationships.
- Rectangle Division
An excellent interactive illustration of division with remainders. A division problem is presented with an array showing the number of squares in the product. The dimensions of the array and can be modified by the number of squares stays constant.