Curated OER
Indirect Euclidean Proofs
In this Euclidean proofs activity, 10th graders solve 10 different problems that include completing indirect Euclidean proofs. First, they write a statement for each of the reasons listed on the sheet of proofs. Then, students solve the...
Curated OER
100 Great English Oxymorons - Phrases That Contradict Themselves!
In this oxymoron worksheet, learners test their vocabulary skills by reading and identifying the contradiction in each of the given phrases.
Curated OER
Power Play
Students explore their own attitudes and practices regarding energy use, and then examine the perspectives of others in order to develop their knowledge of the current political debate on energy policy. Students reflect on their own...
Oswego City School District
Regents Exam Prep Center: Indirect Euclidean Proofs
This Oswego City School District Regents Exam Prep site shows you how to proof something by showing that it is false. This look at indirect proofs includes a practice and a teacher resource page, which features a warm-up activity.
Sophia Learning
Sophia: Argumentative Essays
This tutorial focuses on argumentative essays, longer writings on a well-researched topic with the writer arguing one side of the topic, free of fallacies, and providing several claims. A short YouTube clip of Monty Python shows the...
Stanford University
Stanford Ency. Of Philosophy: Paraconsistent Logic
This site from the Stanford Encyclopedia of Philosophy discusses the logical theory of true contradictions, known as paraconsistent logic. Article addresses the history of the theory's development and a technical presentation of its...
Stanford University
Stanford Encyclopedia of Philosophy: Dialetheism
Describes the notion of "dialetheism," the logical theory of true contradictions. Explains its history of development, its philosophical consequences, and its significance for rationality. Excellent bibliography.
Education Development Center
Making Mathematics: Proof
This is a site which links to specific techniques of proving including conditional statements, proof by contradiction, mathematical induction, parity arguments, and the pigeonhole principle. The site contains a link to various example...
University of Victoria (Canada)
The U Vic Writer's Guide: Literary Term: Paradox
Definition of paradox with example from the poetry of John Donne and links to related terms such as oxymoron and metaphysical conceit.
Mathigon
Mathigon: Axioms and Proof
Explore this course in logic, sets, and proof including topics of axioms, set theory, and proof by contradiction and induction.
ClassFlow
Class Flow: Oxymoron
[Free Registration/Login Required] In this interactive lesson, students will explore how oxymora are used in writing and look at examples. Complete description of this rhetorical effect.
Ted Nellen
Cyber English (By Ted Nellen): Literary Terms Paradox
A very brief definition of the literary term, paradox, along with an example.