The cover of John Hattie’s Visible Learning boasts the blurb “Reveals teaching’s Holy Grail.” Everybody in education needs to get it. If Hattie’s subtitle, A Synthesis of Over 800 Meta-Analyses ...
Hattie's work is based on his meta-analysis of more than 1,000 research reviews comprising more than 50,000 individual studies--the largest meta-analysis ever conducted in the field of education.
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