Free Math Worksheets
Download hundreds of free printable math worksheets for kindergarten kids: counting, number, addition, subtraction, ordering, shapes, writing, coloring, etc.

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

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

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.

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.

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.

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

Kids Domain Shareware Downloads
List of shareware and freeware downloads for PC and Macs.

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