Re Energy
Build Your Own Biogas Generator
What is biogas and how is it made? After examining background information about the sources of biogas and biogas generators, class members follow the provided information and build a biogas generator that can be used in the...
National Nanotechnology Infrastructure Network
Taking a Closer Look at Objects
Take a close look at the world around you with an activity that magnifies everyday objects. Five explorations examine items under intense magnification and pose a series of questions that encourage critical thinking and following...