Suggested for children ages five to nine, this is an excellent book for introducing anatomy and physiology. It combines information, data recording, graphing, and hands-on activity in a very balanced fashion. Younger children might do more of the activities and less of the written work than older children, but there's plenty here to involve a wide age span of children.
Interestingly, the book starts with children observing and charting plant growth as a lead-in to observations about their own bodies. Many of the best time-tested activities are included: e.g., making cells out of colored dough, chicken bone in vinegar, and making full-size outlines of children's bodies. These and other activities require simple resources, almost all of which can be found around the house.
In addition, there are some reproducible, cut-and-paste activity pages plus trivia and bingo match-up type games. This is a particularly good way to introduce children to graphing and other forms of recording and displaying data.