Below are links to sites which may help you. NOTE: These sites will direct you away from the school districts server. Auburn School District does not endorse nor is responsible for the content of these pages.
Wikipedia: A Web-based free-content encyclopedia project. It exists as a 'wiki', a website that allows any visitor to edit its content. Good starting point, but accuracy can be questionable.
Wolfram Alpha: A Web-based service that answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer as a search engine might.
Online Converter: Convert just about anything to anything else. Over 5,000 units, and 50,000 conversions.
MIT OCW: MIT has an expansive free lecture series for sciences.
Kahn Academy: Sites mission "providing a high quality education to anyone, anywhere", the website supplies a free online collection of more than 3,300 micro lectures.
Astronomy (Fraknoi et. al.): Free basic astronomy text book that can supplement in class learning.
General Chemistry: An introduction into chemistry. Think of it as an online text book free for all.
Chemfinder: Gives chemical information on elements and molecules with the ability to show 3-D models.
Clip Converter: YouTube to MP3, AAC, MP4... Recorder, Converter and Downloader!
Easy Bib: Generate citations in MLA, APA & Chicago formats for your bibliography.
NASA: Resources and pictures of various astronomical phenomenon.
NOAA: The National Oceanic and Atmospheric Administration's website.