There are some excellent resources freely available on the Internet about the history of science.  Here are a few.

If one runs a search in Intute on science history, one retrieves over 2,000 links.  The good news is that one can limit to the physical sciences and narrow it down to 698. Intute (short for “internet tutorial” is the collaborative project of over 60 institutes of higher learning, the British Museum and the Brititsh library.

Intute offers Internet tutorials for each discipline. See the virtual training suite:

Another good source is the

The Net Advance of Physics: Review Articles and Tutorials in an Encyclopædic Format

This collection has biographies of many famous physicists and links to many other excellent resources, including the physics societies.

I hope that you find these resources helpful for your students.