Learn about work, motion, force, friction and speed. Learn the 6 basic simple machine types (wheel and axle, pulley, lever, wedge, screw, inclined plane) and compound machines. Our lessons and flashcards are developed using concepts and information that are universal in nature and applicable to any state in the country. You can even use them to prepare for state mandated exams.Your purchase consists of one 37 page lesson,42 pages of flashcards, and 26 pages of quiz material in a single downlo