Home › Authors › Louis Augustus Pechstein 👤 Louis Augustus Pechstein b. 1888 ยท 4 books Books by Louis Augustus Pechstein The direct contribution of edu The direct contribution of educational psychology to teacher training 1932 Psychology of the junior high school pupil 1924 Whole vs. part methods in motor learning 1917 The need for differentiation i The need for differentiation in the preparation of teachers