Take your class through the period between World War I and World War II. Covering various treaties and pacts between America and its neighbors - namely, Japan, Germany, and the Soviet Union- these slides could inspire some political...

Did you know many insects use cohesion or surface tension to walk on water? Using a presentation, scholars learn the more important properties of water. It extends into the concepts of solutions, suspensions, pH, and more.

What common chemical includes safety warnings for being harmful if swallowed or inhaled, causes serious eye damage, and needs to be cleaned up immediately if spilled on the floor? Surprisingly, the dangerous chemical turns out to be...