جزئیات کتاب
فرمت
جلد سخت
صفحات
32
زبان
انگلیسی
منتشر شده
Sep 1, 2015
ناشر
Crabtree Classics
ISBN-10
0778718905
ISBN-13
9780778718901
توضیحات
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.
ژانرها
علم و فناوری