Curated Video
GCSE Maths - How to Disprove a Statement by Counter Example - Proof Part 1 #62
This video covers how to disprove a statement by providing a counter-example i.e. an example that shows that the statement is wrong. This is part 1 of our 2 part series on proofs. 1) How to Disprove a Statement by Counter Example - (this...
Curated Video
A Notable Exception
Stanford University classicist and political scientist Josiah Ober describes his motivation to use Classical Athens as a counterexample to Robert Michels’ theory of “the iron law of oligarchy” of political organisation.
Curated Video
A Notable Counterexample
Classicist and political theorist Josiah Ober (Stanford) discusses how ancient Athenian democracy has long struck him as an obviously important counterexample to Robert Michel's so-called "Iron Law of Democracy."
Curated Video
Critical Thinking, Critically
Renowned psychologist Stephen Kosslyn describes how one can apply many of the findings of cognitive science to analyze the notion of critical thinking that can then be successfully implemented through developing what he calls “habits of...
Curated Video
Teaching Habits of Mind
Stephen Kosslyn, Psychologist and Founder of Minerva University, describes how modern understanding can help us drastically improve current educational practices.
Zach Star
Is there (always) a line that passes through exactly 2 points?
Is there (always) a line that passes through exactly 2 points?
Curated Video
Proof by Exhaustion and Disproof by Counterexamples
In this video, the presenter discusses two methods of mathematical proof: proof by exhaustion and disproof by counterexamples. They explain that proof by exhaustion involves checking all possible cases, while disproof by counterexamples...
Curated Video
Proof by Exhaustion and Disproof by Counterexamples
In this video, the presenter discusses two methods of mathematical proof: proof by exhaustion and disproof by counterexamples. They explain that proof by exhaustion involves checking all possible cases, while disproof by counterexamples...
Brian McLogan
What is a conditional statement and it's parts
👉 Learn how to label the parts of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is...
Brian McLogan
CCSS What are truth tables and how can we create them for conditional statements
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the...
Brian McLogan
What is a conditional statement and it's parts
👉 Learn how to label the parts of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is...
Brian McLogan
Master Determine the Truth of conditional statements and which ones are logically equivalent
Master Determine the Truth of conditional statements and which ones are logically equivalent
Flipped Math
Reasoning and Proof
Make sure the conditions are right. Pupils watch a video introducing conditional statements and their related statements. Learners find out how to identify the hypothesis and conclusion as well as write the converse, inverse, and...
Flipped Math
Unit 2 Review: Reasoning and Proofs
The proof is in the review. Individuals watch a short review of the content from the unit to prepare for the unit exam. The review covers inductive reasoning, conditional and related statements, and two-column algebraic and geometric...
CK-12 Foundation
Conjectures and Counterexamples: Lesson
The first five are red, so they all must be red, right? As part of a larger playlist on basic geometry, the video walks through an example of a conjecture and counterexamples by using a scenario of pulling candy out of a bag.
Khan Academy
Khan Academy: Geometry: Ca Geometry: Similar Triangles 1
This video tutorial [12:55] demonstrates solutions to problems #10-14 of California Geometry released state test questions. Problems address understanding of counterexamples, properties of quadrilateral diagonals, and similar triangles.
Khan Academy
Khan Academy: Geometry: Ca Geometry: More Proofs
Demonstrates solutions to problems #7-10 of California Geometry released state test questions. Problems address understanding of congruent angle pairs when parallel lines are cut by a transversal, counterexamples, and properties of the...