It seems generally agreed that imagination is a good thing and that it ought to be stimulated and developed in education. Two related obstacles stand in the way of our routinely achieving this; first, it is difficult to get a clear grasp on what imagination is, and, second, whatever it is, it does not seem the kind of thing that lends itself to practical methods and techniques that any teacher can easily employ in classroom instruction. The purpose of this book is to try to make a little headway against both of these obstacles. I want to combine a more articulate grasp on imagination with the normal requirements and constraints of classroom teaching and learning, to come up with some practical help for the teacher who wants to engage, stimulate, and develop students' imaginations.