Every once in a while, traits thought to be lost forever suddenly reappear, like a dolphin or a whale born with complete hind limbs! Known as atavisms, these occurrences can teach us all sorts of things, like how limbs actually grow.

The Harlem Renaissance was one of the richest, most vibrant, and most culturally generative artistic periods in American history and the work that emerged from that period continues to shape the landscape of American arts and letters...

How to think about implicit differentiation in terms of functions with multiple inputs, and tiny nudges to those inputs.

When you flip a coin to make a decision, there's an equal chance of getting heads and tails. But what if you flip the coin repeatedly, so that one option would win as soon as two heads showed up in a row, and another would win as soon as...

Emerging research suggests that paintings might be more than just pretty pictures: how we process what we see in paintings might also impact the way we process the world around us.

Our facial expressions convey a lot about our emotions, but why? Hank explores how our evolution has helped form how we communicate with our faces.

How the right question about Newton's method results in a Mandelbrot set.

Ray Bradbury’s novel imagines a world where books are banned- and possessing, let alone reading them, is forbidden.The protagonist, Montag, is a fireman responsible for destroying what remains. The story raises the question: how can you...

New ReviewIn this lesson, students will learn how to simplify and factor linear expressions that involve multiple operations. We begin with a clear procedural checklist: 1️⃣ Rewrite subtraction as addition if necessary 2️⃣ Distribute to remove...

New ReviewIn this math video lesson we will learn how to factor linear expressions using the greatest common factor (GCF) and rewrite expressions using parentheses, aligned to 7.EE.A.1. Viewers will be able to find the GCF of a linear expression...

New ReviewIn this math video, viewers will match equivalent expressions. We will learn how to expand and simplify linear expressions by combining like terms and using the distributive property. We’ll work through four linear expressions, each...

New ReviewIn this math video we will simplify a polynomial expression by using the difference of squares property.

New ReviewCondensing logarithms is a very helpful process to simplify an expression down to a single logarithmic function. In this video we will do it together step by step.

New ReviewA student sent me this problem to determine which simplified expression is equivalent to the non simplified expression.

New ReviewWhen trying to find the vertical asymptotes. Students will make a lot of mistakes. In this video we are going to explore some of the most common mistakes students make.

New ReviewIn this video we are going to cover the properties of exponents that students most often forget and get confused by,.

New ReviewIn this video we are going to explore the difference between simplifying a easy rational expression and one that is more difficult

New ReviewIn this video I am going to work through a problem that is easy to factor as well as one that we cannot factor through rational numbers so will need to use the quadratic formula

New ReviewIn this video I am going to work through simplifying complex fractions by going through multiple examples.

New ReviewIn this video I am going to explore the top logarithmic expressions that students must know about logarithms.

This engaging program explains how chemical reactions can be described and written. Special emphasis is focused on how chemical reactions involve the rearrangement of atoms, but not the overall change in mass (Law of the Conservation of...

In this short video we will answer a standardized high school math test question where we identify an equivalent exponential expression by simplifying. We will begin by using the Power to a Power Rule to "distribute" an exponent outside...

In this shorts video we will factor a quadratic to solve a problem. We will draw and label a picture to represent the problem. We will use a square to model perfect squares and support factoring a quadratic. This quadratic is a...

In this shorts video we will learn how to factor a trinomial to answer a standardized math test question. We will first examine our answer choices and understand that each has been factored using a value of 8. We will use the table...