Cuemath
Cuemath: Integers
The term "integer" was adapted in Mathematics from the Latin word "integer", which means intact or whole. Integers are very much like whole numbers, but they also include negative numbers. This article explains the properties of integers...
Illustrative Mathematics
Illustrative Mathematics: 3.oa Making a Ten
This task builds on that knowledge by asking them to study more carefully the make-a-ten strategy that they should already know and use intuitively. Aligns with CCSS.Math.Content.3.OA.D.9 Identify arithmetic patterns, and explain them...
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.
ClassFlow
Class Flow: Commutative Property
[Free Registration/Login Required] This is the first lesson in a unit on the properties of addition and multiplication. It covers the commutative property and includes a short video clip, internet website, and Activote assessment.
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.
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.
Math2
Math2.org: Basic Algebraic Identities
The basic identities and properties of addition and multiplication are listed. No explanation, simply the identities.
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...
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Turn Around Trains [Pdf]
Play a game with cubes to explore commutative property of addition.
Saddleback College
Algebra2 Go: Prealgebra
The resource consists of comprehensive learning tools such as class notes, video lectures, and templates through which students can review prealgebra topics.
Better Lesson
Better Lesson: Introduction to Solving Equations
Sixth graders work with the concept of equality and balance to solve one and two-step algebraic equations.
University of Saskatchewan (Canada)
University of Saskatchewan: Inequalities
This University of Saskatchewan looks at the basic rules of solving inequalities, concentrating on inequalities with absolute values. Includes example problems and exercises with their solutions.
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.
ClassFlow
Class Flow: Trigonometric Functions
[Free Registration/Login Required] After a quick review of properties in Algebra- addition property of equality and multiplication property of equality- students are guided through all solutions using numerous strategies including back...
Science Struck
Science Struck: Uses of Calcium Chloride
Learn about some uses of calcium chloride as a food additive, as a drying agent, for de-icing, in concrete mixes, and for its exothermic properties.
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...
ClassFlow
Class Flow: Fact Families
[Free Registration/Login Required] In this activity, students use the visual cues from a fact family triangle, manipulatives and numbers to understand and apply the concepts and procedures of mathematics including addition, subtraction,...
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
Algebra.com: Solution: Given a System of Two Equations in Two Variables
This activity shows an example of how to solve a system of equations using elimination. Each step is explained in detail. Additional links are provided for more information on properties of equality, solving equations, and solving a...
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,...