Who has given the following theory? ''All children go through the same sequence of development, but at different rates. Therefore teacher must plan activities for individual children and small groups, not just for the class as a whole.''

2700+ previosuly asked Social Studies questions.
Social Studies is the main subject in the CTET exam Paper II (Also in UTET, MPTET, State TET, REET and other teaching exams). In CTET Exam, the Social Studies section comprises a total 60 questions of 60 marks, in which 40 questions come from the content section i.e.History, Geography and Political Science and the rest 20 questions from Social Studies Pedagogy section.