BBC
Bbc: Gcse Bitesize: Atomic Structure
This lesson focuses on early ideas about the structure of an atom including John Dalton's plum pudding model and Ernest Rutherford's nuclear model. A link to a test is provided.
Concord Consortium
Concord Consortium: What Are Nature's Building Blocks?
Activity 2 of the module explores: If you can't see it, how do you know it's there? Activities include the concepts of J.J. Thomson, electrons, and the Plum Pudding Model of the Atom.
Wolfram Research
Wolfram Science World: Sir Joseph John Thomson (1856 1940)
This site provides a brief biography of the english physicist J.J. Thomson.