Science Education Resource Center at Carleton College
Serc: Models of the Hydrogen Atom
In this activity, learners will explore several different models of the hydrogen atom and compare and contrast them using an online java applet.
CK-12 Foundation
Ck 12: Chemistry: Thomson's Atomic Model
[Free Registration/Login may be required to access all resource tools.] Explains the idea of a scientific model and the development of Thomson's plum pudding model of the atom.