A brief biography of Leonardo is included. For adults or students with some teacher assistance. The Inventions of Leonardo da Vinci, Charles Scribner's Sons. New York 1978. Also includes sections on his investigations of nature and designs for architecture.
Text is highly informative but most suitable for older students and adults.
This CD-ROM allows you to tour the complete Codex Leicester, one of Leonardo's notebooks. The CD-ROM also contains a gallery of Leonardo's artwork and documents, an interactive timeline, and exhibits about his theories of geology, astronomy, the atmosphere, and movement of water. The Way Things Work, Houghton Mifflin Company, Boston, 1988. Contains excellent and thoroughly understandable explanations of the elements of machines. For students and adults.