Video lessons starts to influence learning environments around 2012
Grader A: hit
Grader B: hit
agrees with A, without seeing its verdict
Audit: confirmed
in the fixed audit sample (D11)
Published: hit
Grader A: hit
Speak Up 2013: 46% of US teachers use online videos in instruction; 16% create video lessons.
Test: at least 5% of teachers/learners used online video lessons by 2014
Grader B: hit
PBS LearningMedia survey (Feb 2013): 43% of teachers report using online video content in their classrooms; Khan Academy in wide use.
Test: At least 5% of K-12 teachers used online video lessons by 2014.