This is a very informative handbook on a large portion of nature, originally written for elementary school teachers. It covers wildlife, insects, farm animals, birds, fish, trees, flowers, weeds, vegetables, rocks, minerals, soil, climate, weather, magnets, the sun, moon, planets of our solar system and much more. According to the 1986 foreword, most of the living things described are common in the northeastern states of the U.S. but it covers a lot of material that would be helpful in other parts of the country as well. I've hardly begun to use this resource, but it looks like an excellent reference for all of those questions children want to know about the world around them. It can also be used as a teaching tool and studied more systematically as there are simple lessons designed to be used with children included with each subject. As the lessons are designed to work with real observation of the plants, they are particularly appropriate for a home school. The book is profusely illustrated with black and white photos. I would guess that there's an average of two photos per page. The language is a little archaic and some of the words would be a little difficult for younger children.