Better Lesson
Better Lesson: Any Order
The numbers in an addition number sentence (addends) can be added in any order and the sum remains the same.
Math2
Math2.org: Basic Algebraic Identities
The basic identities and properties of addition and multiplication are listed. No explanation, simply the identities.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Distributive Property Illustrated
This is part of a math forum at Drexel University. A student gets frustrated when asked to solve a problem using the distributive property. Never fear. Dr. Math to the rescue! Illustrations and detailed examples help provide...
ClassFlow
Class Flow: Associative Property
[Free Registration/Login Required] This is lesson two in a unit on the commutative and associative properties. It includes a United Streaming video and Activote session.
Alabama Learning Exchange
Alex: Mix It Up!
By now, students have learned that fact families include both addition and subtraction facts. They have also learned that by reversing the order of the addends, they can form related addition facts with the same sum. The students will...
Alabama Learning Exchange
Alex: Camp Add 'Em Up
When you go to camp, you expect to have a great time and learn a lot. The Camp Add 'Em Up lesson plan series is designed to guide a first grade student through development of addition and subtraction strategies through patterning. This...
CK-12 Foundation
Ck 12: Arithmetic: Decimals
[Free Registration/Login may be required to access all resource tools.] Use number properties in decimal operations
Oswego City School District
Regents Exam Prep Center: Closure Property
This site gives a very clear discussion on the topic of closure of sets over an operation with many examples.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: Linear Equations in One Variable
After completing this tutorial, you'll know what a linear equation is and how to solve one using various arithmetic properties. Contains several definitions, problems with step-by-step solutions, and practice exercises. Includes links to...
Sophia Learning
Sophia: Using Associativity: Lesson 1
This lesson will demonstrate how to use the Associative Properties of Addition and Multiplication. It is 1 of 4 in the series titled "Using Associativity."
Sophia Learning
Sophia: Using Commutativity: Lesson 1
This lesson will demonstrate how to use the Commutative Properties of Addition and Multiplication. It is 1 of 4 in the series titled "Using Commutativity."
Khan Academy
Khan Academy: Patterns in Multiplication Tables
Practice discovering and explaining patterns in multiplication tables. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.OA.D.9 Identify...
TeachEngineering
Teach Engineering: Viscous Fluids
Students are introduced to the similarities and differences in the behaviors of elastic solids and viscous fluids. Several types of fluid behaviors are described--Bingham plastic, Newtonian, shear thinning and shear thickening--along...
Primary Resources
Primary Resources: General Multiplication and Division
A huge collection of teacher resources in basic multiplication and division. Information on multiplication as repeated addition and division as repeated subtraction. Includes worksheets, games, PowerPoint presentations, smartboard...
Department of Defense
Do Dea: Algebra 1: Semester 1: Equations
A learning module through which students learn about equations including the following: Translating words into equations and equations into words, The Properties of Equality to help solving equations, Techniques for solving simple...
Help Algebra
Help algebra.com: Using Principles of Equality
An equation is solved using both the addition and multiplication principles of equality. This example can be used as a model for solving similar equations.
Common Core Sheets
Common Core Sheets: Finding Opposites [Pdf]
This site provides worksheets covering the concept of finding opposites also know as additive inverses. There are ten worksheets and each has an answer key. All files are grouped together as a pdf file.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Opposites
Find a quick, concise explanation of the property of opposites. Several examples are given and clearly explained.
Other
Rodgers and Hammerstein Organization
The web page for this copyright administrator for a variety of entertainment intellectual properties. In addition to comprehensive theatre library, site provides detailed biography and discography of artist and properties represented.
BioEd Online
Bio Ed Online: Flu Basics
This resource provides a basic primer on the the three types of influenza and their properties. In addition, suggestions are given on health habits to practice to avoid getting the flu.
McGraw Hill
Mc Graw Hill: The Additive Inverse Property
The sum of any number and its additive inverse is always a zero. This site gives you the rule for this property.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra
This site is a tutorial for students in algebra 2 or for those who need a refresher. The site has explanations, definitions, examples, practice problems and practice tests are found covering topics such as linear equations, graphing,...
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.
Shodor Education Foundation
Shodor Interactivate: Equation Solver
This activity helps with understanding how to balance an algebraic equation. You input the term and the operation. The activity uses that term, operates on both sides of the equation, then displays the resulting equation.
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