Math manipulatives can be used at all grade levels. Teachers can find many different activities by using these web sites. Some of the topics include: addition, subtraction, multiplication, division, measurement, data analysis, probability, fractions, Venn diagrams, number patterns, geometry, algebra, statistics, and modeling.
"The goals of Interactivate are the creation, collection, evaluation, and dissemination of interactive Java-based courseware for exploration in science and mathematics." Explore the "Featured Activity." Students can click on "Activities," "Dictionary," and "Tools." Teachers can click on "Lessons," "Discussions," and "Standards." Lessons are appropriate for grades 3-12.
Explore these different textbook series: "Connected Mathematics," "Math Thematics," "Mathematics in Context," and "MathScape." Some of the investigations or topics have interactive activities. "Drill down" until you reach the activity you are interested in. NOTE: This site includes ads.