Number of explainers and learners

This page classifies learning situations by the number of explainers (e.g. teachers) and number of learners (e.g. students) present.

Number of explainers	Number of learners	Condition on identity of explainers and learners	Examples
one	many	the explainer is not one of the learners	classroom learning, textbook, blog post explaining an idea, one tutor with many students
many	many	none of the explainers are a learner	classroom with multiple teachers, textbook with multiple authors
one	one	the explainer is not the learner	one-on-one tutoring
one	many	explainer is one of the learners	a group of students studying together and one of them is explaining something
one	one	explainer is the learner	self-studying, original research
many	one		parents explaining something to a child
many	many	each explainer is also a learner	a mutual exchange of information in a conversation