National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Dividing Polynomials
Math Forum offers an example of how to simplify a complex rational expression by factoring.
Council for Economic Education
Econ Ed Link: The Economics of Voting: What Do You Mean My Vote Doesn't Count?
This lesson explores the costs and benefits associated with voting in national elections. Specifically, the concepts of rational apathy, rational ignorance and expressive voting are explained.
Illustrative Mathematics
Illustrative Mathematics: F Bf,if the Canoe Trip, Variation 2
In this task about canoeing, paddling speed, and current speed, learners examine how long a trip would take at different speeds. They write a function equation, graph their equation, and explain their thinking. The primary purpose of the...
BBC
Bbc: Skillswilse: The Number Line
This Skillswise site focuses on number lines. Included is a video about how to use number lines, fact sheets and worksheets for instruction, and quizzes on the information presented. Be aware that this is from Great Britain, so any games...
Khan Academy
Khan Academy: Equations and Inequalities Word Problems
Construct an equation or an inequality that models a given context. Modeling expressions can be quadratic, rational, or exponential. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video,...
CK-12 Foundation
Ck 12: Algebra: Equations With Radicals on Both Sides
[Free Registration/Login may be required to access all resource tools.] Solve equations that involve more than one radical expression.
CK-12 Foundation
Ck 12: Algebra: Multiplication and Division of Radicals
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn how to simplify expressions involving the multiplication and division of radicals. Students examine guided notes, review guided...
Lawrence Hall of Science
The Math Page: Skill in Algebra: Simplifying Radicals
Here is a site that clearly and thoroughly explains simplifying radical expressions. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have...
Khan Academy
Khan Academy: Fractional Exponents
Evaluate numerical expressions with rational exponents, and convert between equivalent forms of exponential and radical expressions.
Alabama Learning Exchange
Alex: Calm and Erratic!
During this lesson, students will learn why numbers are rational or irrational. Rational numbers are numbers that can be written in the form a/b. Irrational numbers cannot be expressed in the form a/b, where a and b are integers.
Common Core Sheets
Common Core Sheets: The Number System 7.ns.1c Worksheets
Print or create worksheets or flashcards to assess students' understanding of converting a subtraction problem to an addition problem and finding equivalent expressions.
Alabama Learning Exchange
Alex: Those Number Aren't Just Moody.
Rational numbers can sometimes cause problems when they're converted to repeating decimals. That, we can handle. But, what about those irrational numbers that can only be "sort of, like approximated"? How can we expect middle schoolers...
Khan Academy
Khan Academy: Adding Negative Numbers on the Number Line
Practice matching number line diagrams to addition expressions involving negative numbers.
Khan Academy
Khan Academy: Unit Fraction Exponents
Evaluate numerical expressions with unit-fraction exponents or radicals, and convert between the two forms of representations.
Better Lesson
Better Lesson: Simplest Form
Given a set of equations students will be able to explain how to reduce fractions to simplest form and determine if the given set of fractions are equivalent.
Interactive Mathematics
Interactive Mathematics: Solving Non Linear Inequalities
The steps for solving non-linear inequalities are presented along with examples to demonstrate the processes. Examples include equations that contain quadratics, cubics and rational expressions.
Khan Academy
Khan Academy: 4th & 5th Roots
Radicals are also known as roots. Evaluate high-degree radicals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Illustrative Mathematics
Illustrative Mathematics: Using Operations and Parentheses
The purpose of this task is to give students a chance to work creatively with three of the four fundamental arithmetic operations (addition, subtraction, and multiplication). It is well suited for helping students develop fluency with...
Illustrative Mathematics
Illustrative Mathematics: N rn.a.2: Checking a Calculation of a Decimal Exponent
The purpose of the task is to connect properties of fractional exponents with ordering of real numbers. Aligns with N-RN.A.2.
CK-12 Foundation
Ck 12: Algebra: Absolute Value Equations
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving absolute value equations. Students can watch a video tutorial, explore guided notes and attempt practice problems.
CK-12 Foundation
Ck 12: Algebra: Absolute Value Equations
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn how to solve equations involving absolute value. Students can explore guided notes and then attempt practice problems.
Learning Wave Communications
Learning Wave: Absolute Value: Danger for Deep Sea Carl
In this interactive math game, students use absolute value to determine how many feet below sea level Carl must be to stay away from the shark.
Doina Popovici
Math Play: Absolute Value Millionaire Game
Practice finding the absolute value of different numbers and expressions in this millionaire-style game.
CK-12 Foundation
Ck 12: Algebra: Division of Polynomials
[Free Registration/Login may be required to access all resource tools.] In this lesson students will learn how to divide polynomials. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
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