University of Waterloo (Canada)
University of Waterloo: Bond Lengths and Bond Energy
Nice page includes a great deal of background on both bond length and bond dissociation energy. Includes a small table of bond energies as well as sample problems, graphics, and skill questions.
Concord Consortium
Concord Consortium: Stem Resources: Making and Breaking Bonds
A look at the processes of association and dissociation in chemical bonding. Observe simulations that show the influence of temperature on making and breaking of bonds, how diatomic molecules form, and what determines the speed of...
Other
Matter Project: Calculating the Enthalpy of Reaction From Bond Energies
This site gives you the bond energy of a variety of bonds and has you figure out the reaction energy. Nice application of bond energy theory.
Other
Matter Project: What Is Bond Energy?
Provides a Java applet that shows the change in energy of a bonded and a non-bonded atom.