Digital Dutch (unit converter)
Converts area, density, energy, force, length, mass, power, pressure, speed, temperature and volume, bits and bytes.
New York Times
Online edition of the newspaper's recent content with searchable archives for a fee. [Registration required]
Teaching kids of all ages all about the United States Constitution - holds a yearly contest with prizes, scholarships, and even a trip to Philadelphia.
Fun activities for kids with free video instructions and printables. Crafts, Magic, Puppets, and more!
UDL Technology Kits
This site removes the obstacles for learning for all students and utilizes free tools to give opportunities to struggling learners that promote academic success. It uses digital and electronic material making it flexible and accessible.
The Awesome Library organizes 23,000 carefully reviewed K-12 education resources for kids. It contains a directory, an index, and a search engine.