The purpose of this task is for students to reason about base-ten numbers on the number line in a way that will require them to use what they know about place value. Students first represent addition and subtraction on the number line in...

Players help Tortisaurus build a pyramid by assembling equations that match particular answers. Involves the application of whole-number addition, subtraction, multiplication, and division skills.

The goal of SpeedMath Deluxe is to create an equation, as quickly as possible, from the four digits the computer gives you. You can use addition, subtraction, multiplication and division to create your equation, but you are not allowed...

[Free Registration/Login Required] This flipchart contains manipulatives for creating addition and subtraction problems using positive and negative numbers. There is an example problem which teachers can use to help design their own...

Number rack facilitates the natural development of children's number sense. The movable, colored beads encourage learners to think in groups of fives and tens, helping them to explore and discover a variety of addition and subtraction...