The dialogue method of discovering the truth was given by

The dialogue method of discovering truth was given by Socrates, who drew out ideas through a chain of probing questions.

By questioning learners and exposing contradictions, he led them to clearer understanding on their own.

Plato was Socrates' student who recorded these dialogues but did not originate the questioning method itself.

Fröbel is known for founding the kindergarten and play based early education, not the dialogue method.

Herbart is associated with the formal steps of instruction and apperception, not with Socratic dialogue.

The Socratic method is also called maieutics, likened to a midwife helping the mind give birth to knowledge.