In this study, the effect of problem-based learning on students' academic achievement and performance skills in a unit on the human excretory system was investigated. Sixty-one 10th grade students, from two full classes instructed by the same biology teacher, were involved in the study. Classes were randomly assigned as either the experimental or…

There has been much reflection recently on how language gets used in language classrooms, by language learners and by language teachers. Rather than the perennial debate about target-language use, the author is referring to the growing body of classroom research in the area of linguistics known as pragmatics. Pragmatics, as defined by Crystal…

This study investigated the effectiveness of combining conceptual change text and discussion web strategies on students' understanding of photosynthesis and respiration in plants. Students' conceptual understanding of photosynthesis and respiration in plants was measured using the two-tier diagnostic test developed by Haslam and Treagust (1987,…

Instructional designs, embedding learning in meaningful contexts such as problem-based learning (PBL) are increasingly used for fostering expertise to prepare students for the demands of the future workplace. However, cognitive outcomes of these curricula in terms of expertise outcomes are not always conclusive. Based on the instructional…

The aim of this study was to compare the acquisition of the van Hiele levels of sixth-grade students engaged in instruction using a reform-based curriculum with sixth-grade students engaged in instruction using a traditional curriculum. There were 273 sixth-grade mathematics students, 123 in the control group and 150 in the treatment group,…

Numerous studies have shown that thinking aloud while reading can be an effective instructional technique in helping students improve their reading comprehension. However, most of the studies that examined the effects of think-aloud involve subjects reading individually and carried out in isolation away from the classroom context. Recently,…

Under the "Math Science Partnership Grant," the Maui Hawaii Educational Consortium sought scientifically based evidence for the effectiveness of Carnegie Learning's "Cognitive Tutor[R]" (CT) program as part of the adoption process for pre-Algebra program. During the 2006-2007 school year, the researchers conducted a follow-on…

This study assessed whether learner control of feedback has a beneficial effect in student performance and attitude, focusing on whether the degree of elaboration feedback needed for high performance could be determined. Program and learner control were used at three levels of feedback, verification, correct answer, and elaboration. Subjects were…

This report summarizes the National Job Training Partnership Act (JTPA) Study, which examined the impact of Title IIA of JTPA on participants' employment, earnings, and welfare receipt. Between 1987 and 1989, more than 20,000 adults and out-of-school youths who applied for JTPA services in 16 areas across the country were randomly assigned to a…

In a study of peer collaboration among children, the case is made for treating the dyad, rather than the individual, as the unit of analysis. Subjects included 154 children aged 5 to 9 years from a broad range of social classes. Children worked in 14 problems (representing 6 types of problems) predicting the movement of a balance beam. Children…

This study attempts to determine whether there exists a negative interconnection between the creative and testable nature-of-science (NOS) conceptions in college students' conceptual ecology by investigating, through a pair of IHV-assisted teaching experiments, the effect of raising the status of each NOS conception in students' conceptual ecology…

This paper reports a study that investigated the development of second language (L2) communication strategies (code-switching, all-purpose words, word coinage, approximation, and circumlocution) over time. In the study, 8 adult learners in a full-time English as a second language program provided oral narrations of an eight-frame picture story at…

In evaluation research studies, it often occurs that several program participants (experimentals) drop out of the program prior to completion. Since noncompleters generally differ substantially from completers in many respects, a control group which originally was representative of the participant group will most likely not be representative of…

THE 5-MONTH STUDY DEALT WITH THE APPLICATION OF THREE DIFFERENT PROGRAMED INSTRUCTIONAL LESSONS GIVEN IN COMBINATIONS TO FIVE DIFFERENT GROUPS OF 41 PUPILS EACH, SELECTED AT RANDOM FROM THE COOPERATIVE, DISTRIBUTIVE, AND OFFICE OCCUPATIONS STUDENTS AT THE HIGH SCHOOL OF COMMERCE IN DETROIT. THE STUDY TESTED MEANS OF IMPROVING PROGRAMED INSTRUCTION…

TO DETERMINE WHETHER AURAL-VISUAL LEARNING OF VOCABULARY IN CONTEXT IS MORE EFFECTIVE THAN ONLY VISUAL LEARNING, AND TO CONTRIBUTE STATISTICAL BASIS TO THE ASSUMPTION THAT AURAL FAMILIARITY WITH THE LANGUAGE FACILITATES MORE EFFICIENT LEARNING AND RETENTION OF VOCABULARY, A PROJECT WAS UNDERTAKEN AT EARLHAM COLLEGE THAT INVOLVED TWO GROUPS OF…