CK-12 Foundation
Ck 12: Physical Science: Thomson's Atomic Model
[Free Registration/Login may be required to access all resource tools.] Thomson's discovery of the electron and his plum pudding model of the atom.
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.