If you care about effective instruction and you don’t know about Cambridge Center for Behavioral Studies, you’re missing something worthwhile. The Cambridge Center provides a wide variety of resources regarding the underpinnings and applications of behavioral science. There’s plenty about precision teaching, Direct Instruction, and more. Sentient beings should go there. Sentient and caring beings should give the Cambridge Center money.
The Cambridge Center site (behavior.org) has many other sections as well on different areas of application of behavior analysis (e.g. autism, behavioral safety, parenting, etc.) but the Education section is one of the strongest. I highly recommend Ed Anderson’s paper on “Education that Works: the child is always right”, which has a good review of precision teaching, direct instruction, and Kent Johnson’s Morningside School. There is also some good material on programmed instruction, the personalized system of instruction (“Keller Method”), and Headsprout (web-based reading instruction based on a fluency approach).