Fourth graders love to shop! In this exciting lesson, 4th graders will discover how to count money using some real world activities. This lesson includes a detailed lesson plan, printable worksheets, and a link to an online interactive...

Smart Exchange is an online community that teachers can share resources. This SMART Notebook file is a great introduction to what fact families are and how 3 numbers can be related to one another. This fact house offers activities to...

Browse resources related to first-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

Browse resources related to second-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

[Free Registration/Login may be required to access all resource tools.] Looks at finding the direction and magnitude of vectors and breaking vectors into component parts.

The number line is a powerful math tool students can use to model their thinking when solving addition and subtraction problems. Use this lesson plan to help students use the number line to count forwards and backwards from 0 to 30.

Learn how to add and subtract rational expressions.

[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to add and subtract polynomials, as well as learn about the different parts of a polynomial. Practice problems are also included.

In this lesson plan, 1st graders are given a graphic of a map and are to use addition and subtraction to solve the word problem.

In this lesson plan students are to answer word problems using addition or subtraction within 20.

This complete lesson plan has students solve word problems using addition and subtraction within 20.

This is a complete lesson that has students solving word problems using addition and subtraction within 20.

This lesson plans allows students to explore the meaning of the equal sign in addition and subtraction problems.

This lesson includes a series of questions that can be posed by the teacher to the whole class which revolves around addition and subtraction.

This lesson plans has students solve word problems about marbles using addition or subtraction within 20.

This lesson plans explores adding and subtracting word problems. This is a complete lesson including attached items.

In this lesson plan, 1st graders are to use a table of sums to explore the relationship between adding and subtracting.

In this lesson plan, 1st graders play a matching game to explore unknown numbers.

In this lesson plan, 1st graders determine if lengths are equal to one another.

Twenty-five problems present a variety of practice solving one-step equations with addition and subtraction. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click...

Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

A detailed explanation of polynomials and like terms is followed with many examples of how to add and subtract them. Lessons for the teacher as well as interactive examples for the students provide plenty of opportunities for practice....

Choose from a variety of Afterschool Adventures covering multiple subject areas. Each adventure includes a detailed plan, videos, learning games, and book suggestions.

Finding common denominators is no problem with Purplemath. Use this lesson to learn how to add and subtract rational expressions with these great examples.