37 Total copies, 37Copies are in,
0Copies are out.
"Presents information on simple machines with a focus on levers. Explains what a lever is, how levers work, and includes examples of past and present uses. Intended for third to fifth grade students"--Provided by publisher.
"Presents information on simple machines with a focus on levers. Explains what a lever is, how levers work, and includes examples of past and present uses. Intended for third to fifth grade students"--Provided by publisher.
General Note
Includes index.
Content Note
What is a lever? -- How do levers work? -- Lever laws -- Long-lasting levers -- Lever types -- Complex machines -- Modern levers -- Gaining an advantage -- Surfing simple machines -- Science in action -- What have you learned?.
