Levers All Around, , North Star Editions, Trudy Becker,Technology/Machinery & Tools,JUVENILE NONFICTION, seesaws; wheelchair users; swings and slides; staplers; levers in the body; knees and elbows; sports equipment; scissors; pliers; steep slopes; science and technology; easy physics; simple machines for kids; technology books for kids; science books for kids; kids nonfiction; juvenile nonfiction; grades 1 and 2,, Using Simple Machines, United States, en-UShttps://northstareditions.comseesaws; wheelchair users; swings and slides; staplers; levers in the body; knees and elbows; sports equipment; scissors; pliers; steep slopes; science and technology; easy physics; simple machines for kids; technology books for kids; science books for kids; kids nonfiction; juvenile nonfiction; grades 1 and 2, [BLURB],[CITY],,books, ebooks, biblet, Book2look