IF: A Mind-Bending New Way of Looking at Big Ideas and Numbers
An intriguing guide to better understanding all those really big ideas and number children come across on a regular basis. Children love these kinds of fact-filled, knock-your-socks-off books and read them from cover to cover. Also an excellent classroom reference that can be reached again and again when studying scale and measurement in math, social studies, science and language arts. Included are six suggestions for classroom projects.