The document discusses two approaches to scientific inquiry - the Biological Sciences Curriculum Study (BSCS) and the Michigan Social Science Curriculum Project. The BSCS focuses on teaching students to process information like research biologists by identifying problems and using methods to solve them. The Michigan project used social psychology to study human relations. The inquiry training model uses a child's natural curiosity to create and analyze new knowledge. It involves five phases: confronting a problem, gathering data through verification and experimentation, organizing findings to form explanations, and analyzing the inquiry process with the teacher guiding each phase.