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.


機器讓舉重物或將物品舉到高處這樣的工作更為容易。以下有六樣工具：槓桿、輪子與輪軸、滑輪、斜面、楔子以及螺絲。你能夠用翹翹板舉起一頭大象嗎？如果結合至少兩樣工具的話，結果會是如何呢？閱讀本書找出答案吧！

本書有色彩繽紛的插圖及令人愛不釋手的內容，保證能吸引喜歡探究事物運作的小讀者，生字用粗體呈現，另附單字表及更多單元，像槓桿實驗與網連結。文字內容及插圖皆經德拉瓦州大學工學院院長 Babatunde A. Ogunnaike 博士審查，確保無誤。