J. Paul Getty Trust
J. Paul Getty Museum: Dorothea Lange Curriculum
An incredible Dorothea Lange resource, this site has it all. It contains lesson plans, an image bank, a biography, a timeline, and even a set of guidelines for discussing photography.
Quia
Quia: Dorothea Lange Photography
Here is a "scavenger hunt" that you can share with your class to learn about and see the work of the photographer Dorothea Lange.