A method includes presenting to an online learner a first question. The method also includes receiving a first answer of the online learner to the first question. The method also includes presenting to the online learner a second question that requests a justification for the first answer. The method also includes receiving a second answer of the online learner to the second question. The method also includes storing, in a learner account of the online learner, the second answer in association with the first answer. The method also includes finding a different second answer of a different online learner and which is associated with a different first answer of the different online learner. The method also includes presenting the different second answer to the online learner.
展开▼
