Abstract
Ten classes were randomly assigned to a group that received feedback and assistance to maintain an average teacher wait time of between 3 and 5 seconds during a sequence of mathematics lessons. A control group of 10 teachers maintained a regular wait time and received placebo feedback. The study was replicated in a sequence of language arts lessons. The use of an average teacher wait time of between 3 and 5 seconds in whole class instructional settings was associated with higher mathematics achievement and improvements in the quality of teacher and student discourse. In extended wait time classes in the mathematics component of the study, decreases were observed in the number of utterances per unit time, the average length of teacher utterances, the frequency of teacher interruptions, failure of students to respond to teacher questions, the proportion of teacher reacting to student responses, and the proportion of teacher mimicking of student responses. Increases were observed in the average length of student responses, the proportion of teacher soliciting, the proportion of teacher structuring, and the proportion of probing after a student response. Similar results were obtained in the language arts component of the study. Changes in the types of teacher questions were observed also. In mathematics there was an increase in the proportion of questions requiring application of concepts, and in language arts there was an increase in the proportion of questions requiring student comprehension.
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