Gr 2-3-Vividly illustrated with photographs, the simple texts introduce readers to helpful and harmful bacteria. Unfortunately, the images chosen for the covers are not as inviting as those inside-these titles will have to be booktalked to get them off the shelves. Pronunciation aids embedded in the texts help beginning readers master the terminology independently. Each book ends with a spread entitled "Words You Know" that features terms from the text (vaccine, virus) illustrated with photographs. Good introductions for budding scientists.-Jean Lowery, Bishop Woods Elementary School, New Haven, CT Copyright 2006 Reed Business Information.