Free ck12 Flexbooks
Open Courseware
Open Courseware
Video
Tooble TV - Capture and save Youtube videos.
Save Tube - Capture and save Youtube videos.
Catch Video - Capture and save Youtube videos.
Writing:
Citebite: Citing web sites -
Citation Maker - Formats citations in APA or MLA style
OttoBib - Formats citations in APA, Chicago/Turabian, or MLA style. All you need is ISBN number.
Confusing Words - Quick look up for words that are often confused. For example the difference between "insure" and "ensure."
Tip of My Tongue - Can't quite think of the right word? Try this site.
The Free Dictionary - An online dictionary or try Memidex for a dictionary and thesaurus.
PDF Converters:
History:
Footnote - Look up historical info on old newspapers - primary source material!
Xtimeline - Many different timelines by event or topic.
Science:
Archive - Images of Life on Earth
Other:
Pics4Learning - Various free pictures