Abstract: A system for increasing the vocabulary of a student using inductive reasoning is disclosed. The system displays a target word to be learned and associated derivation information, followed by a clue. The derivation information can include a pronunciation guide, historical or anecdotal background information, information about its root and prefix or its foreign derivation. The derivation does not rely on a formal definition of the target word and usually does not include such a definition. Clues then request a response from the student. The correct responses require an understanding of the derivation of the respective word. The correct answer to the clue and an explanation for that answer are then provided, thereby adding to the information the student has about the target word's meaning. Typically, the first clue or first several clues will not include the target word in the question, or the expected answer to the question.