책 세부 정보
형식
하드커버
페이지
32
언어
영어
출판됨
Sep 1, 2015
출판사
Crabtree Classics
ISBN-10
0778718905
ISBN-13
9780778718901
설명
Leo teaches his cat Pallas all about simple machines by applying his knowledge of science to their stone age world. Engaging illustrations and stories provide a fun introduction to science concepts, including wheel and axles, levers, pulleys, wedges, screws, and more. Information boxes accompany each story to explore real applications of simple machines in the natural and designed world.
장르들
과학 & 기술