Atomic Theory and Structure
Atomic Theory I: Cathode Rays, Electrons and the Nucleus
Further Exploration
Lawrence Berkeley National Laboratory - The standard and quantum atomic model. Multiple Languages
American Institute of Physics - JJ Thomson's experiments.
Ken Snelson - Artistic renditions of atomic structure.
Biography

The Nobel Foundation

The Nobel Foundation
Classics
Amer. Inst. Physics - 800k audio, live recording of J. J. Thomson speaking about the electron.
Thomson's 1904 paper describing atomic structure.
Text of Rutherford's 1919 lecture on nuclear structure.
News & Events
New Model Explains Proton Structure
Ohio State U.
News from around the world of science.
Research
Google - Research database allows searching of the scholarly literature.
Experiment!
PhET - Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change.
Next Generation Science Standards (NGSS)
Next Generation Science Standards: For States, By States
National Academies Press: A Framework for K-12 Science Education