Teacher wait-times in physics instruction of different duration (45 VS. 60/90 minutes)

Rainer Wackermann, Philip Timmerman & Heiko Krabbe
In recent times, some schools in Germany change the traditional 45-minutes lesson duration to 60 or 90 minutes. Little is known about the impact on the quality of instruction. Teachers’ wait-time after asking questions is related to the cognitive activation of pupils. This exploratory study pursues the question whether a prolongation of lesson duration changes the average wait-time of four individual physics teachers. The finding is that the teachers under investigation show slightly longer wait-times...
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