The topic is protecting our own protective covering: the skin. In particular, the information deals with sweating as a means of temperature regulation and the need to wear clothing appropriate for allowing the process to occur. Learners...

Seventh graders examine the concept of sterile techniques. They realize that plant diseases can be identified and classified in various way. Students identify some of the diseases that attack the garden plants.

This interactive animation, with voiceover narration and clear diagrams, demonstrates how a type of nanotechnology called a microcantilever can be used to determine the presence of infectious agents in cow's milk.