Teacher’s question: I agree with you about the need for basing what we do on research.  But what do you do for the things for which there is no or limited research? For example, what about Orton-Gillingham instruction, what is the best way to sequence phonemes for teaching, or how specifically should background knowledge be taught? What about research that is evolving so that we do things a certain way and then refine these (say with Ehri's & Gonzalez-Frey's recent work in SSR) -- what about all the time that we did the practice the other way? There are some topics wi...