Two books I recommend, both of which are very digestible by your target age group: - The Way Things Work by David Macaulay and Neil Ardley This book is like a

Two books I recommend, both of which are very digestible by your target age group: - The Way Things Work by David Macaulay and Neil Ardley This book is like an encyclopedia, starting from simple machines and guiding the reader to more complex technologies. The illustrations and diagrams are amazing. - One, Two, Three...Infinity by George Gamow This book talks about many topics in math and science!