This site from The Galileo Project of the Rice University provides an in depth history of the telescope and it's invention and growth over time. Too detailed for an Elementary student, but a great resource for an Elementary teacher.

A portrait of Johannes Kepler from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.

An exhaustive (very exhaustive) biographical account of Johannes Kepler. Describes at length his upbringing, childhood, education, personality and scientific endeavors. Focus is on his development of a cosmological model and the laws of...