Centers for Disease Control and Prevention
Youth and Tobacco Use
There are a number of social, emotional, and physiological reasons why teenagers start smoking, and why they continue smoking into adulthood. Help class members understand why smoking begins in youth—and how to protect themselves from...
Wisc-Online
Wisc Online: Lewis Dot Structures of Covalent Compounds
Short slide show provides basic information about drawing Lewis dot structures for covalent compounds. Starts with anatomy of the atom, and then shows the relationship between atomic particles and the Periodic Table of Elements. Offers...
Sophia Learning
Sophia: Real and Intended Audiences
This slideshow focuses on real and intended audiences including defining them, listing audience types, discussing the purpose of writing to an audience, and things to avoid.