Harvard University
Harvard Smithsonian: Everyday Classroom Tools
The focus of this series of lessons is to engage students in an exploration of the world around them. The emphasis is on inquiry as students learn about the earth, sun, light, shapes and more.
Pennsylvania State University
Penn State Lehigh Valley: Scientific Investigation
This site presents a general overview of scientific investigation. Content explores what scientific investigation is, as well as the scientific method (the guidelines followed by all scientists).