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A comment on A Randomized Controlled Trial of Interleaved Mathematics Practice [pdf]. Parent comment

Re:A Randomized Controlled Trial of Interleaved Mathematics ... by 0xab on Sunday May 19, 2019 @04:14PM (#19955232)
There's a control group. Both groups were watched by the experimenters. Not only that, the same teachers had students in both groups in different classes.
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Re:A Randomized Controlled Trial of Interleaved Mathematics ... by zby on Tuesday May 21, 2019 @08:48AM (#19969622)
But the control group would know that nothing has changed. The group testing the new method would feel the excitement - the control group would not.
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