Is there time? Fencers need to make mental calculations within a match. The Math at the Core MS: Ratios resource points out that fencers calculate the ratio of touches per time left to help develop strategies to win. The competitors also...

Here's help in making the giant leap from finding real to finding complex roots. Careful and thorough in explanation, the theory of polynomial algebra is briefly touched upon before the examples really dive into the application...

Continuing with the study of graphing hyperbolas, Sal shows an example of graphing a parabola that is centered at a point off the origin. By looking at the equation, first without shifting it, he helps listeners develop an intuitive...

Sal further ponders the meaning of wealth in this video, which explores the values of gold, land, and money. Touching on Adam Smith's definition of wealth, the presentation discusses the philosophy of utility and what different media of...

What do Usain Bolt and calculus have in common? Using Usain Bolt as an example of distance traveled over time, Sal shows why you need differential calculus to answer the question of how fast something is traveling at a specific time. He...

What kind of lines have equal slopes, equal incline or decline, and equal rise over run? Yes! Parallel lines. What are parallel lines? They are lines on a graph that go on and on and on forever and never touch each other. Watch this...

Sal is starting a cupcake factory and walks learners through the cost and profit calculations necessary for any new business. He uses simple numbers for the start-up costs, overhead, product price, and cost per cupcake. Sal writes out...