Instructional module focusing on the scientific method as a process of investigation into the natural world rather than a linear collection of facts. Site also includes an interactive practice quiz and links relating to the topic.

This page from Iowa State University describes the various experimental ways that Avogadro's number has been determined.

This mini-lesson at the Evolution and Nature of Science Institute site from Indiana University provides a criteria by which students can evaluate an idea or explanation for scientific credibility.

Theoretical physicist Julian Schwinger used the mathematical process of renormalization to rid the quantum field theory developed by Paul Dirac of serious incongruities with experimental observations that had nearly prompted the...

A good first step to read. This set of recommendations or advice comes from the California State Science Fair Committee. Read carefully the first three paragraphs and the "Students are advised" paragraph.

This field guide was created by 2nd graders in Springfield, Massachusetts. It was part of a two-month Learning Expedition that included field observation and collection, classroom experimentation and research, reading from books and...