This book is limited to the type of speech acts, between teachers and students in teaching and learning activities with a K13 background. Teaching and learning activities with K13, consist of three main activities, namely opening lessons, core activities, and closing activities. Core activities with a scientific approach include observing, questioning, experimenting, asso-ciating, and communicating, abbreviated as 5M. The teachers studied were teachers who taught in the field of study or subjects of science and social studies in class VII (first grade) at the state junior school who had followed technical guidance K13, and students were students who attended the teacher’s class.