I upvoted this technology (or pedagogy) because I have used it in my classroom and have seen firsthand its success. I have heard this referred to as the “Feynman technique” and have found it extremely useful, especially with populations of English language learners (ELLs). Learning a topic well enough to teach it in simple, understandable terms (essential for ELLs) demonstrates an authentic understanding of the content. The process of planning to teachback also provides an immediate form of self-assessment as the learner will stumble or struggle when trying to explain something he/she does not fully understand. This provides both the learner and the teacher with valuable feedback on what concepts have not been fully absorbed and allows them both to work on understanding and explaining it using vocabulary and schema that is within the learner’s ZPD. Finally, the learner emerges with a lasting understanding and a sense of pride and confidence as she/he masters the content well enough to teach others. I think that available technologies allow for this format to be extended to a global scale with learners receiving feedback from an audience that extends well beyond their immediate surroundings.