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Reuven Lazarowitz Technion Haifa Jehuda Huppert 《International Journal of Science Education》2013,35(1):67-77
The learning unit, ‘The Cell’, was implemented in a ninth grade junior high school biology course using an individualized audio‐tutorial (IAT) method of instruction. Students’ learning environment their attitudes toward the method and toward science and the understanding of the process of science were investigated. The sample consisted of 105 students in the experimental group and 65 in the control group which was instructed in a traditional lecture‐laboratory method. Data were treated by analysis of covariance and the t‐test results indicate that aspects of the learning environment, such as cooperation and cohesiveness did not diminish in the IAT group, and that factors such as cliqueness, favouritism and competition did not increase. While students expressed favourable attitudes toward some aspects of the IAT method (performing experiments individually, development of independent thinking, self‐examination, rate of learning and self‐achievement), no changes occurred in their attitudes toward science and their understanding the processes of science as a result of being instructed in an IAT setting. Regarding differences between girls and boys, girls expressed more favourable attitudes than boys toward the individualized aspects of the IAT method. 相似文献
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Learning Microbiology with Computer Simulations: students’ academic achievement by method and gender
Tenth grade students studied the topic of ‘The growth curve of microorganisms’, which included a computer‐assisted learning (CAL) simulation episode. The CAL episode enabled students to simulate experiments which investigated the simultaneous impact of three independent variables upon the growth curve of microorganisms (temperature, nutrient concentration and the initial number of individuals from which to start a population growth). Two classes (n = 82 students) formed the experimental group and were instructed in a combination of classroom‐laboratory work with CAL. The control group included three classes (n = 99 students) who were taught the topic in the classroom‐laboratory work setting only. Five teachers taught the five classes, three periods weekly and the study lasted 4 weeks. The students’ previous knowledge in the topic to be learned and their academic achievement were assessed with pre‐ and post‐tests, respectively. The data for each lest were treated with a two‐way analysis of variance. The results showed that the two study groups did not differ in their previous knowledge and no significant differences were found by gender within and between the groups. The post‐test results on academic achievement indicated that students in the experimental group achieved significantly higher means scores than the control group. No significant gender differences on academic achievement were found within each group. The results affirm that: (a) computer simulations, in which three variables are manipulated simultaneously in one experiment, can be integrated as short episodes in the existing biology curricula; (b) high school students can perform computer simulations which require the skills of simultaneous manipulations of three variables in one experiment, problem solving and decision making; (c) girls and boys in the experimental group exhibited these skills at a similar academic level of achievement. 相似文献
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Summaries English The development of series of audio‐tutorial units for biological education at junior high school level is described. The effectiveness of these units was tested with students from a Kibbutz school and found to produce higher achievement than a ‘normal’ teaching approach, based on the BSCS Yellow Version (Israeli adaptation) materials. The audio‐tutorial method led to a particularly high achievement gain in the case of girls. The achievement gains resulting from the audio‐tutorial approach are explained in terms of the motivational effect of this method on students. 相似文献
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J. Huppert S. Michal Lomask R. Lazarowitz 《International Journal of Science Education》2013,35(8):803-821
Computer-assisted learning, including simulated experiments, has great potential to address the problem solving process which is a complex activity. It requires a highly structured approach in order to understand the use of simulations as an instructional device. This study is based on a computer simulation program, 'The Growth Curve of Microorganisms', which required tenth grade biology students to use problem solving skills whilst simultaneously manipulating three independent variables in one simulated experiment. The aims were to investigate the computer simulation's impact on students' academic achievement and on their mastery of science process skills in relation to their cognitive stages. The results indicate that the concrete and transition operational students in the experimental group achieved significantly higher academic achievement than their counterparts in the control group. The higher the cognitive operational stage, the higher students' achievement was, except in the control group where students in the concrete and transition operational stages did not differ. Girls achieved equally with the boys in the experimental group. Students' academic achievement may indicate the potential impact a computer simulation program can have, enabling students with low reasoning abilities to cope successfully with learning concepts and principles in science which require high cognitive skills. 相似文献
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