TED Talks
Daniel H. Cohen: For argument's sake
Why do we argue? To out-reason our opponents, prove them wrong, and, most of all, to win! Right? Philosopher Daniel H. Cohen shows how our most common form of argument -- a war in which one person must win and the other must lose --...
TED-Ed
TED-ED: How to prove a mathematical theory - Scott Kennedy
Euclid of Alexandria revolutionized the way that mathematics is written, presented or thought about, and introduced the concept of mathematical proofs. Discover what it takes to move from a loose theory or idea to a universally...
TED-Ed
TED-Ed: The controversial origins of the Encyclopedia - Addison Anderson
The first encyclopedia contained 70,000 entries and over 20,000,000 words. It was broken into 35 volumes written over the course of 3 decades. It was also banned by Louis XV and Pope Clement XIII. But why was this encyclopedia so...
TED-Ed
TED-ED: How many ways are there to prove the Pythagorean theorem? - Betty Fei
What do Euclid, 12-year-old Einstein, and American President James Garfield have in common? They all came up with elegant proofs for the famous Pythagorean theorem, one of the most fundamental rules of geometry and the basis for...
Curated Video
The Greeks and Proof
The Greek development of a rigorous system of logic and reasoning, which led to the first mathematical proofs. Maths - History Of Maths A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films...
Curated Video
How Origami Changed the World
How the ancient art of paper-folding solved some of the geometric puzzles that had plagued mathematic minds for millennia. Maths - Measurement A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context...
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...
Math Fortress
Geometry: Beginning Proofs (Level 1 of 3) | Algebra Proofs, Geometric Proofs
In this video we will learn how to write simple two-column proofs. We will first cover algebraic proofs, then we will go over the elements of an axiomatic system, the video ends with an introduction to geometric proofs.
Curated Video
Appeals to Authority
Philosopher of science and unapologetic mathematical Platonist James Robert Brown, University of Toronto, highlights an impressive array of brilliant mathematical minds who also strongly believed that mathematical truths are “out there”,...
Curated Video
Proofs Using CPCTC
Congruent triangles are two triangles that share the same shape and size, but their positioning may be different. If you know that two triangles are congruent, you can prove every corresponding angle and every corresponding side is...
TMW Media
Geometric Proofs: The properties of proofs
What are the 9 properties you can apply to proofs? What else can you apply to proofs? Geometric Proofs, Part 3
TMW Media
Geometric Proofs: Part 3 of 3 of learning to solve proofs
This video contains 1 proof to solve. Geometric Proofs, Part 6
TMW Media
Geometric Proofs: Why are proofs important
Why is it important to do proofs? What is a proof? Why does every statement have to be true? Geometric Proofs, Part 1
Zach Star
The Math Major (Part 2)
This video continues on from part 1 and covers pure math concepts such as abstract algebra, real analysis, and topology. Those classes have less obvious real world applications than those discussed in the previous video and are much more...
Brian McLogan
Master writing a two column algebraic proof
Master writing a two column algebraic proof
KnowMo
Geometric Proof Using Vectors
This video provides an overview of geometric proof using vectors, covering topics such as parallel vectors, collinear points, and resultant vectors. The presenter explains how to represent vectors using notation and how to work with them...
Brian McLogan
How to Prove Congruent Triangles Using SAS - Congruent Triangles
👉 Learn how to prove that two triangles are congruent. Two or more triangles are said to be congruent if they have the same shape and size. There are many postulates and theorems to determine whether two triangles are congruent. They...
TMW Media
Geometric Proofs: An example proof
What are proofs trying to get you to do? What is needed when preparing to work on a proof? Geometric Proofs, Part 2
Brian McLogan
Master writing a two column proof using segment addition theorem
Master writing a two column proof using segment addition theorem
Brian McLogan
Writing a proof for equiangular angles within each other
👉 Learn how to write a proof given a triangle. A triangle is a polygon with three sides. A proof is a series of statements and reasons that establishes the truth of a mathematical claim(statement). To write a proof given a triangle, we...
TMW Media
Geometric Proofs: Part 1 of 3 of learning to solve proofs
This video contains 2 proofs to solve. Geometric Proofs, Part 4
Cerebellum
Understanding Othello: Desdemona And Othello Talk And Othello Doubts Her Fidelity
Othello, the timeless battle of good versus evil. The sinister Iago is pitted against Othello, a man of honor. Desdemona speaks to Othello on Cassio's behalf, Lago stirs up his suspicions of Desdemonas infedelity. This video is part 5 of...
Brian McLogan
Learn How to Prove Two Triangles are Congruent by SSS - Congruent Triangles
👉 Learn how to prove that two triangles are congruent. Two or more triangles are said to be congruent if they have the same shape and size. There are many postulates and theorems to determine whether two triangles are congruent. They...