Want a realistic timeline for that research project? Use these tips and resources to get a handle on what to do and when to do it. It offers templates several types of research projects such as speech, media project, primary sources, research paper, lab report, poster (Powerpoint), etc.

A United Nations document that discusses the human rights violations that took place during El Salvador's Civil War and its concerns about the situation two years after the peace accord was signed. (8 April 1994)

This PDF lists energy sources along with advantages and disadvantages for each source.

This site provides a set of four Physics problems dealing with the conservation of momentum principle.

This page is a continuation of a tutorial about light reflection and refraction. It contains a diagram and suggestions on how to derive Snell's Law, which governs the refraction of light in a medium. For background to this derivation, first look at the page "How does light travel?," (link is at the bottom of this page) which introduces Fermat's principle and gives suggestions on how to derive the law of reflection. Beyond the derivation of Snell's Law, this page also contains investigation questions that will allow you to further explore the refraction of light.