The book is easy and interesting to read. So much current and practical material has been incorporated into this slim book, cleverly organized around the analogies of The Wizard of Oz. Marilee, as an experienced teacher who reads extensively, has the gift to select the essentials to provide an over-all introduction to "brain-based teaching". The Table of Contents will give a good idea of the scope of coverage: structure of the brain, dealing with stress, emotional growth, developmental cognitive skills, 5 kinds of memories, 8 intelligences, use of music, brain states, brain food, sleep, exercise, learning environment, learning styles, brain-based asesssment...
Once the appetite is aroused by the introduction here, readers can move on to Eric Jensen's books, esp. "Brain-based Learning", "Different Brains, Different Learners". Jensen's recent books all have much better visual format, more sketches and pictures.
(The "marshmallow experiments" on impulse control quoted by Goleman is also quoted here (p. 49). Various authors, e.g. John Gottman, have actually challenged the conclusions.)