Libros de David Armentrout (4 libros)

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.