My son is 3.5 years old. Here are some of the books he loves. The Magic School Bus series. For example: http://www.amazon.com/Magic-School-Bus-Ocean-Floor/dp/

My son is 3.5 years old. Here are some of the books he loves. The Magic School Bus series. For example: http://www.amazon.com/Magic-School-Bus-Ocean-Floor/dp/0590414313/ref=sr_1_4?s=gateway&ie=UTF8&qid=1285361104&sr=8-4 http://www.amazon.com/Magic-School-Bus-Ocean-Floor/dp/059041... If I Built a Car (a great book on design) http://www.amazon.com/gp/product/0142408255/ref=oss_product http://www.amazon.com/gp/product/0142408255/ref=oss_product Manfish: A Story of Jacques Cousteau http://www.amazon.com/gp/product/0811860639/ref=oss_product http://www.amazon.com/gp/product/0811860639/ref=oss_product