Curated OER
Rules of Divisibillity
Sixth graders participate in a instructional activity that covers the Rules of Divisibility. They play a game for a warm-up before the direct instruction. Following the rules being covered they finish the instructional activity using an...
Richland Community College
Rcc: Solving Inequalities Algebraically and Graphically
Straightforward explanations on how to solve inequalities. Includes linear inequalities, double inequalities, absolute value inequalities, polynomial inequalities, and rational inequalities.
Purple Math
Purplemath: Systems of Non Linear Equations: Definitions
This Purplemath lesson provides formulas, equations, graphs and explanations of systems of equations.
Cool Math
Coolmath: Cramer's Rule for 3x3's
Use this tutorial to learn how Cramer's Rule works for 3 x 3.
Khan Academy
Khan Academy: Two Step Inequality Word Problems
Practice constructing, interpreting, and solving linear inequalities that model real-world situations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Planet
Math Planet: Equations With Variables
Examples and video tutorials that teach how to solve equations that contain unknown variables.
ClassFlow
Class Flow: Solving Systems Using Elimination
[Free Registration/Login Required] This flipchart shows students how to solve systems of linear equations using elimination.
Wyzant
Wyzant: Combining Like Terms Worksheet
Ten multi-step linear equations are provided here from WyzAnt in an inter-active format for students to use to quiz themselves. Students enter their answers and the site grades it for them.
ClassFlow
Class Flow: Multiplication Review
[Free Registration/Login Required] A fun way to review multiplication facts for students in the elementary grades! Includes practice with multiplying one- and two-digit numbers and setting up/solving word problems.
Wyzant
Wyzant: Equation Calculator
Students can input an equation and have the site solve it for them, complete with steps shown and explanations given along the way. Equations must be simple, first- or second-degree with only one variable. A quick list of rules to follow...
Purple Math
Purplemath: Factoring Polynomials: How To
Demonstrates the steps involved in factoring a general polynomial, including using the Rational Roots Test and synthetic division. Shows how to "cheat" with a graphing calculator.
Purple Math
Purplemath: Solving Quadratic Equations by Factoring
Demonstrates how to solve quadratics using factoring (that is/the Zero-Product Property). Provides worked examples/and warnings about common mistakes.
Purple Math
Purplemath: Solving Polynomials: How To
Demonstrates the steps involved in solving a general polynomial, including how to use the Rational Roots Test and synthetic division. Points out when using a graphing calculator can be very helpful.