I like this book.  I think it encourages kids to be careful observers who look closely at the world around them.  There is actually very limited explanatory text in this book.  Most of the information is conveyed through simple, yet detailed diagrams.  The topics covered are everyday objects with which students are already familiar, and of which most would have opportunities to examine close up in person as they study the book.  Obviously the information is not in-depth, but basic scientific principles are illustrated through the workings of these everyday objects such as flashlights and toasters and paper airplanes and toilets, etc. It’s a book that invites careful study as one really looks at the pictures, and perhaps then really looks at the things around us.