Questions
&gt; Is Bloom&#x27;s &quot;Two Sigma&quot; phenomenon real? ...
one-on-one tutoring using mastery learning led to a two sigma(!) improvement in student performance.<p>When I tutored, I found students often had some misunderstanding, somewhere. So my task was to <i>listen</i>, to find that misunderstanding, so I could correct it. This &quot;teaching&quot; is listening, more than talking.
The idea is they are lost, but to know what direction they need, I first must know where they are.<p>To correct misunderstanding without this guidance can be very difficult, and might only happen serendipitiously, years later... assuming they continue with study. Which an unidentified misunderstanding can prevent.<p>Recently, I&#x27;m seeing the other side, while self-learning some maths. I can see how much one-on-one tutoring would help clear up misunderstandings. Instead, I&#x27;m using the strategy of insisting on starting from the basics, chasing down each detail as much as I can, using online resources, and working out proofs for myself. Each step is a journey in itself...<p>Luckily, I have enough skill, confidence, motivation and time. By working it out myself, I think I&#x27;m also gaining a depth of understanding I could not get from a tutor&#x27;s guidance.<p>But it sure would be a lot more efficient!<p>[ PS I haven&#x27;t yet read the two pdf&#x27;s in the question ]