Other
All About Frogs: Life Cycle of a Frog
Understand the reproduction and life cycle of a frog from mating through spawn, eggs, tadpoles, and growing legs to the final frog. Nice details.
PBS
Pbs Nature: Frogs and Toads
Do you know how to tell the difference between a frog and a toad? This site provides interesting facts and information about this type of amphibian from where they live to what they eat and more.
University of Guelph
Canada's Aquatic Environments: Reproduction
A three-page introduction to reproduction in amphibians can be found at this site. Read about the various methods of reproduction, and what happens after the eggs are laid. There is also a section that shows the growth/development stages...