A dynamic, three-part feature explores what caused mass extinction of the dinosaurs at the end of the Cretaceous period. Computer animations, interviews, and on-site footage from around the world divulge evidence that it was the K-T...

Alkenes and alkanes can collide and result in an addition reaction. Using models of molecules, Chemguy acts out what happens in such a reaction. He then explains how to write them out on his whiteboard. This brief introduction can be...

Carboxylic acids are hydrocarbon derivatives that have a carboxyl group attached. Learn how to name and draw models of the structure of these organic compounds. This brief introduction can be embedded into your PowerPoint or Smart Board...

Esters are the organic compounds that make the flavors in fruit. Chemguy explains the chemical reaction that creates an ester, how to name them, and how to draw their structures. This brief introduction can be embedded into your...

Curiosity is the desire to learn or know, and it is also the name of the rover that landed on Mars in 2012. Mohawk-sporting Bobak Ferdowsi, a NASA engineer also discusses how and why we study Mars. He provides facts about the rover and...

This nifty little presentation uses computer animation to illuminate how ionic molecular bonds and covalent bonds are formed. This would be a terrific addition to your PowerPoint or Smart Board lesson on molecular bonding.

This short video explains the two types of waves involved in sound wave propagation. Very simplistic computer animations support the verbal explanation. You could embed this video into your high school physics PowerPoint or SmartBoard...

This is just a short video of a wine glass breaking due to resonance. You could embed it into a PowerPoint or Smart Board lesson on sound. It is rather remarkable that this can be done purely with sound!