http://ccs.sagepub.com/ Clinical Case Studies http://ccs.sagepub.com/content/12/4/307 The online version of this article can be found at: DOI: 10.1177/1534650113486184 2013…
Personalized System for Instruction (PSI) âas fast as they can or as slowly as they needâ â Michael Metzler Background Originally designed in the 1960s by Dr. Fred Keller…
1. Personalized System for Instruction (PSI) • “as fast as they can or as slowly as they need” 2. Background • Originally designed in the 1960s by Dr. Fred Keller…