A short video introduces the triangle that illustrates how to find any value given the other two in the density formula. Class members use the triangle to work several problems to find the mass, volume, or density of an object.

Sometimes in physics, the logic is a little illogical. A video presentation shows how to use extreme cases to apply logic to physics stumpers. The examples pertain to displacement situations, but scholars can apply the concept to all...

British astronomer Sir Fred Hoyle first coined the term the Big Bang in 1950. The theory explains much of what we have observed in the universe, but it does leave some things unexplained. The video discusses the Cosmic Inflation...

While 80 percent of people with West Nile Virus show no symptoms, in severe cases, it causes death by infecting the membranes around the spinal cord and brain. The video starts by making population ecology relevant. It includes density...

Is it true that we are evolutionarily programmed to procrastinate? Sort of. Learn how the factors of expectancy and short-term rewards can contribute to procrastination, how they are related to the habits of our ancestors, how...

It may be time to get to know the skeletons in your family. The first lesson in a series of 5, introduces the class to the concept of osteoporosis. The class members brainstorm possible causes and whether the family should be concerned...

Learn how to solve for density when you need to calculate the volume of a cube. [2:49]

Learn how to use the density number like a conversion factor, to solve for mass or volume. Watch this video after the density introduction or before the more complicated video on density exercises that has unit conversion. [8:55]

Sal solves a word problem about the number of passengers a blimp can carry, using his knowledge of volume and density.

This video demonstrates how to solve problems involving Archimedes' principle and buoyant forces. [9:41]