Federal Registry for Educational ExcellenceThe Federal Registry for Educational Excellence (FREE) makes it easier to find digital teaching and learning resources created and maintained by the federal government and public and private organizations
Khan Academy A free learning source tailored and personalized for each student K-12. (Includes resources for all subjects.
MIT Open CoursewareMIT (Massachusetts Institute of Technology) Publishes all of their courses online to make them available for everyone. Includes lectures, course materials and solutions, online textbooks, videos and more. Courses available in business, computers, engineering, fine arts, humanities, mathematics, sciences, and social sciences.
PhET.Interactive Simulations Fun, interactive, researched-based simulations of physical phenomena from the PhET™ project at the University of Colorado.
Periodictable.com contains an interactive graphic periodic table with information on all of the elements.
Periodic Videos The University of Nottingham provides brief video clips about each of the periodic elements.
Theodoregray.com is the author of The Elements, A Visual Exploration and other scientific writings.
Stevespangler.com Science made fun. Products, hands on experiments, projects, videos, and teacher professional development designed to make learning science fun.