Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Adding and Subtracting Polynomials
A tutorial as an introduction to polynomials. Basic terminology and simple algebraic manipulations. Offers discussions and practice exercises with answers and explanations.
Teachnology
Teachnology: Addition and Subtraction Teaching Theme
Addition and Subtraction Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition and subtraction skills.
Better Lesson
Better Lesson: Solving Subtraction Number Stories Writing the Answer Lesson Plan
Students will be able to solve subtraction word problems using objects and write a numeral for the solution.
Teaching Treasures Publications
Teaching Treasures: Year Three Math (Page 1)
Sharpen your mathematical skills with this interactive worksheet that combines two-digit addition, two-digit subtraction, and basic multiplication facts. This activity is easy to grasp and gives learners immediate feedback to their...
Teaching Treasures Publications
Teaching Treasures: Year Three Math (Page 5)
Sharpen your computation skills with two-digit addition, two-digit subtraction, and one-digit multiplication facts using this interactive worksheet. Learners must be familiar with multiplication facts through twelve to be successful....
ABCya
Abc Ya: Math Fact Shoot Out
Use multiplication, division, addition, or subtraction to play this math basketball game. Choose your operation and level to try to collect basketballs to use for shooting free throws. Each correct answer earns you one basketball - the...
Learning Wave Communications
Learning Wave: Commutative and Associative Properties of Addition
A detailed example is used to demonstrate the difference between the commutative and associative properties of addition.
Khan Academy
Khan Academy: Multi Step Estimation Word Problems
Use estimation to solve multi-step word problems involving addition, subtraction, multiplication, and division. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
Nearpod: Addition & Subtraction Strategies
In this lesson, students will relate counting to addition and subtraction and will learn several strategies for solving addition and subtraction problems.
Other
Dan's Math: Basic Skills Topics
College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.
Other
Xtra Math
[Free Registration/Login Required] XtraMath is an excellent site for students to practice their basic number facts and develop automatic recall. Teachers can register for a free account and are then guided through the steps for setting...
CK-12 Foundation
Ck 12: Trigonometry: Cosine Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Examples, videos, and practice problems covering cosine of a sum or difference related to a set of cosine and sine functions. Here you'll learn to rewrite cosine...
CK-12 Foundation
Ck 12: Trigonometry: Applications of Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Solving equations and verifying identities with the sum and difference formulas.
CK-12 Foundation
Ck 12: Trigonometry: Tangent Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Here you'll learn to rewrite tangent functions with addition or subtraction in their arguments in a more easily solvable form.
Cool Math
Coolmath: Coolmath4kids: Printable Flash Cards
Find here flashcards for addition, subtraction, multiplication, and division for printing off and coloring.
Math Aids
Math Aids: Number Bonds Worksheets
Great resource to practice and strengthen math skills pertaining to number bonds. Math worksheets are printable, may be customized, and include answer keys.
Math Aids
Math Aids: Function Table Worksheets
Great resource to practice and strengthen math skills pertaining to function tables. Math worksheets are printable, may be customized, and include answer keys.
Thomas Jefferson National Accelerator Facility
Jefferson Lab: Speed Math Deluxe
The goal of SpeedMath Deluxe is to create an equation, as quickly as possible, from the four digits the computer gives you. You can use addition, subtraction, multiplication and division to create your equation, but you are not allowed...
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting to Determine the Longest
[Free Registration/Login may be required to access all resource tools.] The video [0:34] describes how to add and subtract measurements of length from a given word problem. The video is followed by practice problems covering the topics...
CK-12 Foundation
Ck 12: Elem Math: Adding or Subtracting Lengths in One Step
[Free Registration/Login may be required to access all resource tools.] The video describes how to add and subtract measurements of length from a given word problem. The video is followed by practice problems covering the topics in the...
PBS
Pbs: Word Problems Using Addition and Subtraction of Fractions: Harry Gets Locked Up
This video features Harry and his cousin Harley. Harley is desperate to use Harry's bike, but first he must decipher the combination to the bike lock by solving a word problem. In the accompanying classroom activity, students complete a...
Khan Academy
Khan Academy: Add and Subtract Polynomials: Two Variables
Practice adding and subtracting polynomials. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Alabama Learning Exchange
Alex: 100 More Hungry Ants
Students will investigate what happens to the number of ants at a picinc when 100 more ants arrive at the picnic. They will explore this concept using a slide presentation followed by a partner game. This lesson plan was created by...
Khan Academy
Khan Academy: Challenging Add and Subtract Word Problems (Within 100)
Practice solving more challenging addition and subtraction word problems with "more" and "fewer". Multi-step problems are also included. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity to try...