Curated OER
Toontime
High schoolers examine and discuss how editorial cartoons are made and their role in society. They research and write about Andrew Jackson's presidency, and create an editorial cartoon of a modern presidency.
CK-12 Foundation
Ck 12: Algebra: Excluded Values for Rational Expressions
[Free Registration/Login may be required to access all resource tools.] Reduce rational expressions involving fractions to simplest terms and find their excluded values.
CK-12 Foundation
Ck 12: Algebra: Excluded Values for Rational Expressions
[Free Registration/Login may be required to access all resource tools.] Learn how to simplify rational expressions and find excluded values.
CK-12 Foundation
Ck 12: Algebra: Excluded Values for Rational Expressions
[Free Registration/Login may be required to access all resource tools.] Learn how to simplify rational expressions and find excluded values.
Paul Dawkins
Paul's Online Notes: Math Notes: Excluded Values in Rational Functions
A description and example of which values are excluded from the domain of a rational function.
Help Algebra
Help algebra.com: Rational Expressions
In addition to defining rational expressions, this resource demonstrates how to find the excluded values and zeros of the expressions.
Math Planet
Math Planet: Simplify Rational Expression
An algebraic expression where both the numerator and the denominator are polynomials e.g.(x+3) / x is called a rational expression. Since the denominator can't be zero there are values of x which are excluded from the rational...
CK-12 Foundation
Ck 12: Algebra: Solving Rational Equations Study Guide
This comprehensive study guide highlights the main terms and formulas needed to review solving rational equations. Examples are included.
Brown University
Brown University: The Decameron Project
Few great books like the Decameron have shaped our very notion of storytelling and its crucial role in the negotiation and production of shared social and cultural values. In its hundred stories, shared in ten days by ten young people...