Khan Academy
Khan Academy: Math Patterns 1
Identify arithmetic patterns (including ones in the addition or multiplication tables), and explain them using properties of operations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Math Medics
S.o.s. Math: Hyperbolic Functions
This math lesson gives formulas for the hyperbolic trigonometric functions, a very most important property of their version of the Pythagorean Theorem, and it's verification, and many helpful visual aides.
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...
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.
California Institute of Technology
Spitzer Science Center: Ring of Stellar Death
The Ring of Stellar Death captured in this space telescope image features a dying star expelling what appears to be clumpy rings of material, but turns out to be part of a planetary nebula. In addition, a detailed textual overview...
Math2
Math2.org: Basic Algebraic Identities
The basic identities and properties of addition and multiplication are listed. No explanation, simply the identities.
CK-12 Foundation
Ck 12: Elem Math: Selecting the Related Addition Fact
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which addition fact is related to the given addition problem. The video uses vocabulary of addends and sum. The video is...
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.
Khan Academy
Khan Academy: Integers: Negative Numbers: Number Opposites
Students take a quiz over the concept of integer opposites, also known as additive inverses. After answering each question they are given feedback. Hints are available but affect the score. If students are still struggling with the...
Illustrative Mathematics
Illustrative Mathematics: Counting Dots in Arrays
This task aims to show students that there is often more than one way to represent a quantity. This lesson also lays a foundation for students to understand the commutative property of multiplication.
University of St. Andrews (UK)
University of St. Andrews: Brahmagupta
Brahmagupta was a mathematician and an astronomer. He is responsible for the addition and multiplication properties of zero.
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.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Commutative, Associative, Distributive
Find a quick, concise explanation of the Arithmetic Properties-Associative, Commutative, and Distributive Properties. Examples are given for each property to help you understand how to recognize and apply each property.
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.
Illustrative Mathematics
Illustrative Mathematics: 5.md,oa You Can Multiply Three Numbers in Any Order
The purpose of this task is for students to use the volume of a rectangular prism to see why you can multiply three numbers in any order you want and still get the same result. Aligns with 5.OA.A and 5.MD.C.5.
Science Struck
Science Struck: Adding Exponents
Explains how to add exponents as well as other aspects of exponents including positive and negative exponents, rational exponents, zero exponents, power of power, and division of exponents. Includes practice problems with answers provided.
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...
NumberNut
Number Nut: Carrying Like Addition
Use what you already know about addition to master this skill in multiplication. This lesson reviews the concept of carrying in multiplication. Detailed examples are provided along with interactive games to practice the skills learned....
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...
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.
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...
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...
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