This book was written at the request of a elementary school teacher I have worked with. I was explaining some basic elements of theory to her 3rd, 4th, and 5th grade classes. In my teaching I use associative learning as the bases of most of my explanations to our students. She appreciated the way her students understood the material as presented and asked me to write it in a book. It took over a year to complete the project. It is a reference book for your students and gives you, the teacher, additional ways to explain this important material to your students.