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Whiteboard
ClassFlow

Class Flow: Associative Property

For Teachers 3rd - 5th
[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.
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PPT
McGraw Hill

Mc Graw Hill: The Additive Inverse Property

For Students 9th - 10th
The sum of any number and its additive inverse is always a zero. This site gives you the rule for this property.
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Activity
Oswego City School District

Regents Exam Prep Center: Closure Property

For Students 9th - 10th
This site gives a very clear discussion on the topic of closure of sets over an operation with many examples.
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Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra: Linear Equations in One Variable

For Students 9th - 10th Standards
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...
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Unit Plan
Khan Academy

Khan Academy: Patterns in Multiplication Tables

For Students 2nd - 4th Standards
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...
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Lesson Plan
TeachEngineering

Teach Engineering: Viscous Fluids

For Teachers 10th - 12th
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...
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Professional Doc
Primary Resources

Primary Resources: General Multiplication and Division

For Teachers Pre-K - 1st Standards
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...
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Unit Plan
Department of Defense

Do Dea: Algebra 1: Semester 1: Equations

For Students 9th - 10th
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...
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Activity
Help Algebra

Help algebra.com: Using Principles of Equality

For Students 9th - 10th Standards
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.
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Whiteboard
ClassFlow

Class Flow: Fact Families

For Teachers Pre-K - 1st Standards
[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,...
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Activity
Common Core Sheets

Common Core Sheets: Finding Opposites [Pdf]

For Students 5th - 7th
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.
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Activity
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Opposites

For Students 9th - 10th Standards
Find a quick, concise explanation of the property of opposites. Several examples are given and clearly explained.
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Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra

For Students 9th - 10th
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,...
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Activity
Other

Dan's Math: Basic Skills Topics

For Students 9th - 10th Standards
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.
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Interactive
Shodor Education Foundation

Shodor Interactivate: Equation Solver

For Students 9th - 10th Standards
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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Activity
J Coffman

Joseph Coffman's Lecture Notes: Solving Systems of Equations Algebraically

For Students 9th - 10th Standards
The lesson explores solving systems of equations algebraically. Topics discussed are the elimination method, substitution method, addition property, and special cases. Examples with detailed solutions and an assessment are included.
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Website
Other

Cambridge University: Color Perception Tutorial

For Students 9th - 10th
This helpful tutorial on color perception is divided into sections including our eyes and vision, additive and subtractive color mixing, hue and saturation, and color properties.
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Unit Plan
Khan Academy

Khan Academy: Math Patterns 1

For Students 2nd - 4th Standards
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...
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Handout
Simon Fraser University

Chem1 Virtual Textbook: Kinetic Molecular Model

For Students 9th - 10th
The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with the basic components of the Kinetic-Molecular Theory in addition to...
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Graphic
Math Medics

S.o.s. Math: Hyperbolic Functions

For Students 9th - 10th Standards
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.
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Website
NOAA

Noaa: Crabeater Seals

For Students 3rd - 8th
This complete site offers several really cool facts about the crabeater seal. In addition, a link takes you to more information about this seal such as where do they live, what do they eat, how long do they live and more.
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Activity
Duke University

Duke University: Web Feats Ii: Altitude Theorem for Equilateral Triangles

For Students 9th - 10th
This resource provides information about the altitude theorem for equilateral triangles, in addition to links on related topics. Requires Java.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg Solar Eclipse

For Teachers 9th - 10th Standards
In this task, students investigate why total solar eclipses are rare. They will learn that, in addition to requiring the positioning of the Sun, Moon, and Earth, the Moon can only completely block out the Sun when it is closest to the...
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Lesson Plan
Better Lesson

Better Lesson: Math Centers Review Previous Skills

For Teachers K Standards
Students will be able to independently practice graphing, teen numbers, and addition.

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