[Free Registration/Login may be required to access all resource tools.] The video describes how to work backwards using addition and subtraction to solve for a specific value.

[Free Registration/Login may be required to access all resource tools.] a The video shows how to work backwards using addition and subtraction to determine the start value of a given situation. The video is followed by a series of...

Students explore the inverse relationship of addition and subtraction. The resource provides self-check exercises and timed learning games to practice the concept.

By the end of this section, you will be able to understand the rules of vector addition, subtraction, and multiplication and to apply graphical methods of vector addition and subtraction to determine the displacement of moving objects.

Students explore the relationship between addition and subtraction and develop an understanding of decomposing numbers in different ways in this first-grade lesson plan.

An extensive collection of teacher resources to help in teaching and reviewing the concepts of basic addition and subtraction. There are many worksheets, activities, PowerPoint presentations, smartboard activities, Word, Excel, and pdf...

This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.

In this interactive site, students will begin to understand the rules of vector addition, subtraction, and multiplication and apply graphical methods of vector addition and subtraction to determine the displacement of moving objects.

Explains what fact families are for addition and subtraction and includes sample problems to try.

[Free Registration/Login may be required to access all resource tools.] CK12: Inequalities with Addition and Subtraction of Fractions

Use these teaching tips from the PBS Kids Lab to help children make sense of problems and persevere in solving them, determine the unknown whole number in an addition or subtraction equations, use addition and subtraction within 20 to...

Here's an extensive selection of teacher resources to aide in teaching and reviewing addition and subtraction. You will find resources on the vocabulary used in word problems, column addition, checking addition and subtraction, games,...

This task challenges a student to demonstrate understanding of concepts involved in addition and subtraction. A student must be fluent with addition and subtraction within 100 and understand the relationship between addition and...

This sample chapter from Hurst's book Picturing Math is an excellent resource for using picture books and activities for learning computation.

This review sheet includes important rules, properties, formulas, and equations needed to solve many Algebra problems.

Assess your ability to do addition, subtraction, multiplication and division without a calculator. There are three levels of difficulty. Receive immediate feedback and a certificate of completion. Quiz can be downloaded into PDF format...

Students add and subtract plays on a football field to practice working with negative and positive integers on the number line.

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....

A tutorial as an introduction to polynomials. Basic terminology and simple algebraic manipulations. Offers discussions and practice exercises with answers and explanations.

[Free Registration/Login Required] Use the teddy bears to act out stories while solving addition and subtraction problems.

In this lesson, students will relate counting to addition and subtraction and will learn several strategies for solving addition and subtraction problems.

As related to cryptography, understanding the concept of modular addition and modular subtraction and finding the proof.

Explore subtraction and addition but having student collect data from rolling objects. This lesson has students adding and subtracting numbers they collected using strategies used in class. Use the document and video found on this page...

[Free Registration/Login may be required to access all resource tools.] A learning module where students must apply the order of operations to solve simple equations involving addition, subtraction, and multiplication. A video shows how...