The purpose of this paper is to clarify the characteristics of Ernst Meyer's group instruction in relation to frontal instruction. In this paper, the following three points are analyzed. (1) In the historical development of German didactics, how Ernst Meyer's group instruction is positioned is clarified. (2) Ernst Meyer's frontal instruction and the form of his instruction are clarified, and the position of Ernst Meyer's group instruction in the theory of the instructional form is analyzed. (3) Herbert Gudjons revalues both group instruction and frontal instruction today. The Gudjons theory is clarified, and Ernst Meyer's group instruction is compared with the Gudjons theory.