Jerome Bruner is a prominent educational psychologist known for developing the theory of discovery learning. Discovery learning encourages students to learn through problem solving by drawing on their own experience and existing knowledge. This philosophy became popular in the 1960s as the discovery learning movement. Some forms of discovery learning include problem-based learning, case-based learning, and experiential learning through excursions and field trips. Excursions provide opportunities for hands-on, engaged learning outside the classroom and for teachers to use new teaching strategies.