Libros de Patricia Armentrout (4 libros)

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

Eco-Friendly Energy Is Explained. The Most Current Information Is Provided While Establishing The Understanding That It Does Not Take Much To Make The World A Better Place.

Explains The Early History Of How The Bill Of Rights Came To Be And How It Is Used To Protect Citizens.

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