ABSTRACT
Any book synthesizing meta-analyses is fundamentally a literature review, and thus it builds on the scholarship and research of those who have come before. A major purpose of this book is to generate a model of successful teaching and learning based on the many thousands of studies in 800 and more meta-analyses. The aim is not to merely average the studies and present screeds of data. This is not uncommon; so often meta-analyses have been criticized as mere number crunching exercises, and a book based on more than 800 meta-analyses could certainly have been just that. That was not my intent. Instead, I aimed to build a model based on the theme of “visible teaching, visible learning” that not only synthesized existing literature but also permitted a new perspective on that literature.
