[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.

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...

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.

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 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...

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

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

[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...

[Free Registration/Login may be required to access all resource tools.] A learning module where students apply the order of operations to solve equations involving addition, subtraction, and multiplication of multi-digit numbers, as well...

In this lesson plan, 3rd graders use their own bodies to create bar graphs and do problems involving addition, subtraction, and more or less amounts. They then create their own graphs, incorporating the features of graphs that they have...

In this interactive students will begin to understand the rules of vector addition and subtraction using analytical methods. They will apply analytical methods to determine vertical and horizontal component vectors.

In this lesson on addition and subtraction within 20, 1st graders learn how to solve addition and subtraction story problems by finding clue words. Adding three addends is also taught in this lesson.

Sing a song, practice step by step and assess your knowledge on the properties of addition with this interactive lesson.

In this exercise, students practice addition and subtraction word problems 1. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Solve word problems with addition and subtraction without regrouping. Then test your knowledge.

Practice working through addition and subtraction problems using the number line. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] Learn how to solve one-step inequalities using addition and subtraction.

[Free Registration/Login may be required to access all resource tools.] This learning module features three videos and a set of practice questions in which students solve word problems requiring either one-step or two-step addition...

[Free Registration/Login may be required to access all resource tools.] Write addition and subtraction verbal phrases as single variable equations.

Practice seeing how addition and subtraction are related. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] The video is a 2 part word problem using addition and subtraction of 2-digit numbers. The video is followed by practice problems to assess student understanding of...