Here is a fun poem called "The Microscope" by Maxine Kumin. The poem is about Anton Leeuwenhoek whom most people credit as the inventor of the microscope.
Games, Activities and interesting stuff:
Microscope Parts Quiz - a good review of the parts of the microscope. Note: what we call low power they call scanning power, what we call medium power they call low power!?
A little History - this site gives some a bit of history of the invention of the microscope.