Model in Teaching and Developmental Research is wrapped in one discussion whereas model in this book is seen as a lecturer or teacher who lectures or teaches learning material in the classroom. As a model in teaching, lecturer or teacher has a mental model in constructing new knowledge to learners by implementing suitable model of teaching. There are many kinds of model of teaching which can be adapted, adopted and implemented in teaching in the classroom. Kinds of model of teaching are based on objectivist and constructivist epistemological perspectives. Therefore this book is appropriate with the mental model of the model in teaching. Meanwhile, model in developmental research is meant as model of development research, whereas the models of this research also are coming from the epistemological perspective above. Procedural is from objectivist approach and conceptual is from constructivist approach. Furthermore, the model in developmental research is so astonishing to be read, implemented for enriching development research from two different perspectives.