Addition Math Worksheets
Free printable additon math worksheets for kindergarten kids: additon math worksheets with sum to 5, sum to 10, sum to 20 and addition math worksheets with pictures.

Free Preschool Math Worksheets
Free preschool math worksheets: counting, number, addition, subtraction, ordering, shapes, writing, coloring, larger smaller number.

Electronic Abacus Applet
This applet explores the use of an abacus model for representing numbers and for performing addition.

Frog Maths
Children learn how to add numbers using the frog game.

Comparing Connecting Cubes
In this unit of work, students explore the five models of subtraction (counting, sets, number line, balanced equations, and inverse of addition) using connecting cubes.

Do It with Dominoes
The sequence of lessons in this Unit Plan builds an understanding of the processes and properties of addition, including the order property and the additive identity.

Dositey Basic Facts and Regrouping
Worksheets for addition, subtraction, multiplication and division.

Online Base 10 Blocks
Drag and drop these online blocks to represent numbers.

Links Away
In this unit, students explore the five models of subtraction (counting, sets, number line, balanced equations, and inverse of addition) using links.

Comparing Connecting Cubes
The sequence of lessons in this Unit builds an understanding of the processes and properties of subtraction.

Virtual Cuisenaire Rods
Try these lesson plans and learning object which is an improved version of the original integer rods.

Helping Students Understand Subtraction
This activity helps to introduce students to subtraction.

Ten Little Black Dots
Students will discover the various ways they can combine two numbers to equal a sum of 10.

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