Hattie for Dummies

A quick overview of Hattie's research and a description of how it relates to ordinary classroom practice. PLEASE NOTE: There is an error at 4.05 in the timeline in the statement ".04 = average of everything we do in education." The figure should be .40.

[@bny2274]

Wow Nancy, you're great! Thank you so much for the clarification!

[@Illjamayne]

That must be the voice of Tree Trunks from Adventure Time :O Very cool video!

[@marcus58527]

Your slide which mentions Effect Size the average should be 0.4 not 0.04 as listed.

[@VinateroNails]

Thank you, great explanation!

[@freddyfriesen]

Ok . . . so I taught in public school for forty years and am developing a pity for Hattie having wasted his life on crunching numbers that basically add up to zero.

[@georgelilley6185]

You can critique Hattie's work right from his initial claim 98% of things work, e.g his main Feedback study Kluger &DeNisi report more than 38% of feedback does not work! Marzano says about 40% of things don't work. Then there is the file drawer problem, which is a bias toward studies that work, ones that don't work are not published but put in a file drawer. There is a lot of peer review critique of Hattie's work, teacher's need to be aware of this, I've summarised here - visablelearning.blogspot.com/