National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Inequalities
"Dr. Math" responds to a student question about solving inequalities. Within the response, a list of the properties of inequalities is provided. Site by Math Forum
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.
CK-12 Foundation
Ck 12: Algebra: Two Step Equations With Subtraction and Division
[Free Registration/Login may be required to access all resource tools.] Solve one and two-step equations by using the inverse properties of subtraction and division
Other
All Elementary Mathematics: Proportionality and Ratio
A brief explanation of the mathematical relationship between ratio, proportion, and proportionality. Examples are included.
Digital History
Digital History: Feminism Reborn
This comprehensive survey of the women's movement during the 1960s and 1970s documents women and politics, women's wages, legal discrimination against women, stereotypes of women, women's rights legislation, and women's rights...
CK-12 Foundation
Ck 12: Algebra Ii: 1.1 Zero Product Property
This section explores the process for finding values for x that make polynomial equality true when written in terms of x and set equal to zero.
CK-12 Foundation
Ck 12: Algebra: Single Variable Addition Equations
[Free Registration/Login may be required to access all resource tools.] Solve single variable addition equations
CK-12 Foundation
Ck 12: Algebra: Single Variable Subtraction Equations
[Free Registration/Login may be required to access all resource tools.] Solve single variable subtraction equations
CK-12 Foundation
Ck 12: Algebra: Single Variable Subtraction Equations
[Free Registration/Login may be required to access all resource tools.] Solve single variable equations involving subtraction.
CK-12 Foundation
Ck 12: Algebra: Single Variable Addition Equations
[Free Registration/Login may be required to access all resource tools.] Solve single variable equations involving addition.
Texas Instruments
Texas Instruments: Roll the Dice
In this activity, students use the order of operations and number properties to create a unique expression from a set of numbers that must equal another number.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Linear Equations in One Variable
Through this tutorial, which offers step-by-step examples, video explanations, and practice questions, you'll learn what linear equations are and how to solve and classify them.
Maths Challenge
Maths challenge.net: Inscribed Rectangle
This is a proof problem, considered a "three star" geometry problem requiring knowledge of proofs and properties of circles to solve this equal area of inscribed polygons problem.
CK-12 Foundation
Ck 12: Algebra: Multi Step Equations
[Free Registration/Login may be required to access all resource tools.] Solve equations that involve more than two steps to isolate the variable.
CK-12 Foundation
Ck 12: Algebra: Single Variable Division Equations
[Free Registration/Login may be required to access all resource tools.] Solve single variable equations involving division by applying inverse operations.
CK-12 Foundation
Ck 12: Algebra: Linear Equations Study Guide
This comprehensive study guide highlights the main terms and formulas needed to understand linear equations. Examples are included.
TeachEngineering
Teach Engineering: Messin' With Mixtures
In this activity, students investigate the properties of a heterogeneous mixture, trail mix, as if it were a contaminated soil sample near a construction site. This activity shows students that heterogeneous mixtures can be separated by...
Texas Instruments
Texas Instruments: Angles Formed by Intersecting Chords, Secants, and Tangents
In this activity, students will investigate properties of angles and arcs formed when chords, secants, and tangents intersect and intercept arcs in a circle. They discover several important theorems concerning circles and arc sizes. They...
Library of Congress
Loc: America's Story: 14th Amendment to the Constitution
After the Civil War, the 14th amendment granted citizenship to all people born or naturalized in the United States. This included former slaves. Learn about the protections this amendment offers to citizens, including those who were once...
National Women’s History Museum
National Women's History Museum: The 14th and 15th Amendments
Information on the passage of the 14th and 15th amendments that helped to transform the women's rights movement.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Adding and Subtracting Inequaliites
"Dr. Math" provides an explanation on remembering when inequalities may be added and subtracted. The explanation is in response to a question submitted by a student.
Math Open Reference
Math Open Reference: Kite
Learn about kites with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.
Khan Academy
Khan Academy: Normal Distributions Review
Normal distributions come up time and time again in statistics. A normal distribution has some interesting properties: it has a bell shape, the mean and median are equal, and 68% of the data falls within 1 standard deviation.
CK-12 Foundation
Ck 12: Algebra: One Step Equations and Inverse Operations
[Free Registration/Login may be required to access all resource tools.] In this lesson students solve equations involving addition and subtraction. Students examine guided notes, review guided practice, watch instructional videos and...