Author: afflatusmedia

  • 2 Sigma Problem

    2 Sigma Problem

    If you hear designers toss out this term, they are likely referring to Bloom’s Two-Sigma Problem: the research finding that one-on-one instruction (direct tutoring) is as much as two standard deviations (sigmas) more effective than conventional group instruction. This raises significant challenges and opportunities related to personalized learning, particularly with the affordances of today’s educational…