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Esther Bagno Semadar Levy Bat-Sheva Eylon 《Journal of Science Education and Technology》2006,15(3-4):215-219
Misconceptions among students studying physics have been widely reported in the research literature. Many teachers are not acquainted with this literature. Moreover, many of them claim that only weak students have misconceptions. This paper reports on an online activity focusing on misconceptions of students regarding Newton’s 3rd Law, that is being carried out through the website of the National Center of Physics Teachers. The aims of the activity are: (1) To convince the teachers that sometimes difficulties in understanding concepts do not stem from the inability of certain students to understand the concept, but rather because of misconceptions in physics. (2) To present the teachers with the findings of studies on physics instruction that deal with the concepts under discussion. (3) To convince the teachers to try out new, innovative teaching strategies. 相似文献
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Knowledge Integration and Displaced Volume 总被引：1，自引：0，他引：1
This study contrasted spontaneous and reflective knowledge integration instruction delivered using a computer learning environment to enhance understanding of displaced volume. Both forms of instruction provided animated experiments and required students to predict outcomes, observe results, and explain their ideas. In addition, the reflective instruction diagnosed specific inconsistencies in student reasoning and encouraged students to reflect on these dilemmas as well as to construct general principles. We distinguished the impact of instruction on students who believed scientific phenomena are governed by principles (cohesive beliefs) versus students who believed that science is a collection of unrelated facts (dissociated beliefs). Students typically held multiple models of displacement, using different explanations depending on the form of assessment. For example, we found that 17% of these middle school students made accurate predictions about displacement experiments prior to instruction and 25% could construct an accurate general principle. However, only 12% consistently used the same explanation across assessments. After instruction, students were more accurate and more consistent: over 50% accurately predicted experimental outcomes, 79% gave an accurate general principle, and about 40% gave consistent responses. We found no advantages for enhanced animations over straightforward animated experiments. The reflective integration instruction led to more substantial long-term changes in student understanding than did spontaneous integration instruction. Furthermore, on a delayed posttest we found that students with cohesive beliefs not only sustained their understanding of displaced volume, but, when exposed to reflective integration instruction, actually continued to construct more predictive views following instruction. In contrast, students with dissociated beliefs made no long-term progress independent of the form of instruction. 相似文献
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RAY is a learning environment that includes a flexible ray tracing simulation, graphic tools, and task authoring facilities. This study explores RAY's potential to improve optics learning in high school. In study 1, the teacher used RAY as a smart blackboard with a single computer in the classroom to explore, explain, and predict optical phenomena; to introduce concepts; to interpret experiments and to represent theoretical exercises. A comparative study shows a significant effect on the spontaneous and correct use of the model by students in solving problems and a limited effect on conceptual understanding. In study 2 students, guided by written materials used the simulation individually. Students considered in a systematic manner the relationship between image formation and image observation—a major conceputal stumbling stone. They reflected on the problem-solving activity and reformulated explicity their knowledge in the domain. Case studies describe the interplay between the various aspects of the learning process in the development of conceptual understanding. A comparative study shows the importance of three factors to students' understanding of concepts and their ability to use the ray model: the computerized environment (versus written instruction of similar kind); a task design that addresses directly conceptual difficulties; and the explicit reformulation of ideas. 相似文献
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Inequalities are one of the foundational subjects in high school math curricula, but there is a lack of academic research into how students learn certain types of inequalities. This article fills part of the research gap by presenting the findings of a study that examined high school students’ methods of approaching absolute value inequalities, their common mistakes, misconceptions, and the possible sources of these mistakes and misconceptions. The research study used two tools—a questionnaire and personal interviews. The questionnaire was given to 481 students in the 10th and 11th grades in Israel who studied mathematics at intermediate and advanced levels. It was administered after the students had studied inequalities. Thirty-two students were interviewed in order to find their ways of thinking and the sources of their errors. The main types of mistakes that students consistently made when solving absolute value inequalities were found. Based on the study’s findings, teachers can understand students’ thought processes and use this understanding to conduct remediation and enhance mathematics instruction. 相似文献
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Ornit Spektor-Levy Bat-Sheva Eylon Zahava Scherz 《International Journal of Science and Mathematics Education》2009,7(5):875-903
This study explores the impact of ‘Scientific Communication’ (SC) skills instruction on students’ performances in scientific
literacy assessment tasks. We present a general model for skills instruction, characterized by explicit and spiral instruction,
integration into content learning, practice in several scientific topics, and application of performance tasks. The model
was applied through an instructional program that focuses on the following learning skills: information retrieval, scientific
reading and writing, listening and observing, data representation, and knowledge presentation. Throughout the 7th–8th grades,
160 students learned the whole program or one of its components: structured instruction (SI) of SC skills, or performance tasks (PT). A comparison group of 42 students did not receive instruction of SC skills. Students’ performances were assessed through
a questionnaire and a complex task that measured students’ scientific content knowledge, SC skills, and the quality of the
final products. Results indicated that students who learned the whole program or one of its components achieved higher scores
in all categories than the comparison group students. High achievers can benefit from just one component of the program: either
structured instruction (SI) or learning from practice (PT). However, they can hardly acquire SC skills spontaneously. Low
and average achievers require both components of the SC program to improve their performances. Results show that without planned
intervention, the spontaneous attainment of SC skills occurs only to a limited extent. Systematic teaching of skills can make
a significant difference. The explicit instruction of skills integrated into scientific topics, the opportunities to implement
the skills in different contexts, the role of performance tasks as ‘assessment for learning’—all these features are important
and necessary for improving students’ scientific literacy. Our general model of skills instruction can be applied to the instruction
of other high-order skills. Its application can lead to the realization of the central goal of science education: literate
students possessing scientific knowledge. 相似文献
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Orna Fallik Bat-Sheva Eylon Sherman Rosenfeld 《Journal of Science Teacher Education》2008,19(6):565-591
We investigated the effects of a long-term, continuous professional development (CPD) model, designed to support teachers
to enact Project-Based Learning (PBLSAT). How do novice PBLSAT teachers view their acquisition of PBLSAT skills and how do
expert PBLSAT teachers, who enacted the program 5–7 years, perceive the program? Novice teachers evaluated that they acquired
the relevant skills but also expressed worries about enacting the program, due to potential difficulties for teachers. Nonetheless,
the teachers enacted the program and identified unforeseen benefits for themselves and their students. We suggest that the
CPD model helps teachers develop a sense of personal ownership and customization for the program, through multi-staged support
to integrate student free-choice PBL into the formal science curriculum. 相似文献