孩子的成長過程中，到了開始認知與感受的階段時，對於動植物、大自然、身體奧妙等周遭生活事物漸漸地產生好奇與興趣，如果能在這時候，提供能滿足孩子慾望的啟蒙書籍，兩者相輔相成下，孩子的吸收力必定能發揮最大的效力！
由美國Harpercollins出版的《Let's-Read-and-Find-Out Science》系列就非常適合當作孩子的第一套自然科學入門書！以孩子的視角來發掘這個美麗的世界，從學齡前到小學生都適合閱讀。本系列編排精良，結合數十位一流的科學、文學、教育、插畫家，歷時多年創作而成。涵蓋主題廣泛，包含動物、植物、天氣、外太空、自然生態、科學原理、身體運作、天文、環境……等等，以『一書一主題』的知識傳遞，讓孩子能聚焦地掌握每本書的重點內容。
《Let's-Read-and-Find-Out Science》系列不以一般自然科學較為艱深的方式編寫，改以文學式的敘事表達，並將語言學習、地理知識及世界觀融合於整套書中，讀來舒適親切。本系列依文字難易度與科學概念深淺分為 Stage 1 與 Stage 2 兩個級數，供家長、老師選書參考。《Simple Machines》屬於Stage 2，較適合小學生閱讀。
本書以全彩色的插圓，精簡的文字，讓小朋友認識不同的機械原理，如齒輪、槓杆、螺絲等，解答了充滿好奇心的小朋友心中的疑問。
Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Read and find out!
With colorful illustrations and engaging text, Simple Machines will delight young readers who love figuring out how things work. Featuring rich vocabulary bolded throughout the text, this book also includes a glossary and a find out more section with a lever experiment and web research prompts. Both the text and the artwork were vetted for accuracy by Dr. Babatunde A. Ogunnaike, dean of the College of Engineering at the University of Delaware.
This is a Level 2 Let's-Read-and-Find-Out Science title, which means the book explores more challenging concepts for children in the primary grades and supports the Common Core Learning Standards, Next Generation Science Standards, and the Science, Technology, Engineering, and Math (STEM) standards. Let's-Read-and-Find-Out Science is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.
Paperback / For Ages: 5-8 / 38 pages