In the Delta Science Reader Simple Machines, students explore the world of simple machines and the energy that makes them work. Students read about the six simple machines, and understand the difference between simple and compound machines. In biographical sketches, students meet ancient Greek mathematician Archimedes and modern inventor Lillian Gilbreth, and discover how they put simple machines to work. Students also read about the scientific formula for calculating work, the many levers in the human body, and how a roller coaster works.
Delta Science Readers are 16-page nonfiction books for students with informative, engaging full-color photos and graphics that present key science concepts and vocabulary.
Each reader has three main sections:
Student Readers 8 1/2" x 10 7/8", 16 pages