Home and school contributions to science achievement in elementary schools in israel

This article reexamines the relative status of “school variables” versus “home variables” in explaining the variance in science achievement, based on data from Israeli elementary schools in 1984. The contribution of school variables was found to be “subject specific”—larger in subjects taught in school and less dependent on general ability, and “system specific”—larger in low socioeconomic schools and small in high socioeconomic schools.     

Using the SOLO taxonomy to analyze competence progression of university science curricula

During 2007 all Danish university curricula were reformulated to explicitly state course objectives due to the adoption of a new Danish national grading scale which stipulated that grades were to be given based on how well students meet explicit course objectives. The Faculties of Science at University of Aarhus and University of Southern Denmark interpreted “course objectives” as “intended learning outcomes” (ILO) and systematically formulated all such as competencies using the SOLO taxonomy that operates with five numbered progressive levels of competencies. We investigate how the formulation of ILOs using the SOLO taxonomy gives information about competence progression, educational traditions, and the nature of various science subjects. We use all the course curricula (in total 632) from the two faculties to analyze and compare undergraduate and graduate courses within each department, and different departments with each other.     

The impact of science curricula on student views about the nature of science

This review of the literature focused on three decades of research related to precollege student understandings about the nature of science. Various interpretations of what aspects characterize the nature of science were examined, revealing an agreement among scientists, science educators, and those involved in policy-making arenas that the nature of science is multifaceted and an important component of scientific literacy. A summary of the research regarding the adequacies of student conceptions about the nature of science revealed inconsistent results. Although the majority of studies show that student understandings are less than desirable, there is research that indicates that student conceptions are acceptable. Research on the impact of instructional materials and techniques on student understandings was also reviewed. The effects of language in science instruction, the content emphasis of instructional materials, integrated science curricula, and instruction in general were curricular variables found to have a negative impact on student understandings about the nature of science. Empirical evidence about the success of innovative instructional materials and techniques designed to facilitate more adequate understandings of the nature of science is needed.     

The development of a science process assessment for fourth-grade students

In this study, a multiple-choice test entitled the Science Process Assessment was developed to measure the science process skills of students in grade four. Based on the Recommended Science Competency Continuum for Grades K to 6 for Pennsylvania Schools, this instrument measured the skills of (1) observing, (2) classifying, (3) inferring, (4) predicting, (5) measuring, (6) communicating, (7) using space/time relations, (8) defining operationally, (9) formulating hypotheses, (10) experimenting, (11) recognizing variables, (12) interpreting data, and (13) formulating models. To prepare the instrument, classroom teachers and science educators were invited to participate in two science education workshops designed to develop an item bank of test questions applicable to measuring process skill learning. Participants formed “writing teams” and generated 65 test items representing the 13 process skills. After a comprehensive group critique of each item, 61 items were identified for inclusion into the Science Process Assessment item bank. To establish content validity, the item bank was submitted to a select panel of science educators for the purpose of judging item acceptability. This analysis yielded 55 acceptable test items and produced the Science Process Assessment, Pilot 1. Pilot 1 was administered to 184 fourth-grade students. Students were given a copy of the test booklet; teachers read each test aloud to the students. Upon completion of this first administration, data from the item analysis yielded a reliability coefficient of 0.73. Subsequently, 40 test items were identified for the Science Process Assessment, Pilot 2. Using the test-retest method, the Science Process Assessment, Pilot 2 (Test 1 and Test 2) was administered to 113 fourth-grade students. Reliability coefficients of 0.80 and 0.82, respectively, were ascertained. The correlation between Test 1 and Test 2 was 0.77. The results of this study indicate that (1) the Science Process Assessment, Pilot 2, is a valid and reliable instrument applicable to measuring the science process skills of students in grade four, (2) using educational workshops as a means of developing item banks of test questions is viable and productive in the test development process, and (3) involving classroom teachers and science educators in the test development process is educationally efficient and effective.     

Issues of relevance in Kenyan mathematics and science curricula

Are ‘Mathematics’ and ‘Science’ such universal notions that one curriculum can serve equally well in all societies, subject only to exemplification from local circumstances? Or do different human cultures construct and use ‘Mathematics’ and ‘Science’ so differently that each culture needs to construct its own curriculum to teach its own children? At issue is whether curricula developed in industrialised states can be readily transferred or adapted to developing countries.Taking as its starting point the fates of the Scools Mathematics and the Schools Science Projects in Kenya, — both adaptations of British models, — this paper reviews the research addressed to these questions. Its conclusion is that definitive answers are not yet possible. Nevertheless, what evidence there is seems to question the possibilities of transferability or even of simple adaptation.     

Understanding of graphs in social science undergraduate students: selection and interpretation of graphs

How do university students understand the graphs that they read in their textbooks? How does their knowledge regarding the content and their statistical training influence this understanding? Does the kind of task demand also influence this understanding? To answer these questions, we asked a group of psychology students and a group of economics students to choose the most suitable graph for presenting the results of different psychological research studies (reports) (selection task) or to explain in words the results of the same reports shown by means of their graphic representations only (interpretation task). The results showed there were very few differences between groups. Most of the students were able to relate textual information to the adequate graph, but also revealed significant shortcomings and mistakes in their understanding of important syntactic aspects of graphs. They also interpreted the graphs correctly but their interpretation had different levels of complexity, which were not always optimal. We also identified significant differences regarding the difficulty of the reports and the kinds of misinterpretations of graphs. The two tasks thus revealed different pictures of students’ skills in reading and interpreting graphs and, consequently, how the characteristics of task demands influence their performance.     

生物教学中如何实现对学生科学态度的评价

作为高科技的两大支柱之一的生物科学技术越来越受到全社会的广泛认同,生物学常识已经渗入到社会的各个行业,与各学科发生了广泛链接,产生了无比强烈的共鸣。初中生物学科是学生接触最早的一门独立的自然学科,其教学内容与学生的生活世界紧密相连,学生有着丰富的情感体验,这是生物学科强大的教育内涵,在培养学生科学态度中有着无可比拟的学科优势。     

Problems in the summative evaluation of experimental science curricula in developing countries

Conclusion The simple techniques described in this paper can be applied rapidly and inexpensively by personnel previously untrained in techniques of curriculum evaluation. They are unrefined and open to much serious methodological criticism. Nevertheless they work. They are a way of giving those who must make value judgements about the implementation of new curricula some systematic information on which to base opinions. By using such methods for example, the author was able to show that the experimental course in biology in Malawi had a very high chance of success (90 per cent probability) when implemented in all schools in Malawi. Similar studies of current experimental programmes in Kenya and Zambia have provided interesting comparisons. In Kenya the Secondary Science Project in Biology was shown to have an 80 per cent chance of succeeding when spread from trial schools to all schools. In Zambia by contrast the Secondary School Science Pilot Project of the Science Education School of the University was shown to have only a 20 per cent chance of success. These indices provided valuable guidance to the Ministries concerned (Meyer, 1971). The use of such simple techniques has not been previously employed in developing countries and changes of policy have been based invariably on unsystematic opinion. The methods reported in this paper, therefore, appear justified in the absence of practicable alternatives.     

The effects of new science curricula on student performance

This study summarizes the results of a quantitative synthesis of the retrievable primary research dealing with the effects of new science curricula on student performance. This study synthesizes the results of 105 experimental studies involving more than 45,000 students and utilizes the quantitative synthesis perspective to research integration known as meta-analysis (Glass, 1976). A total of 27 different new science curricula involving one or more measures of student performance are included in this meta-analysis. Data were collected for 18 a priori selected student performance measures. The results of this meta-analysis reveal definite positive patterns of student performance in new science curricula. Across all new science curricula analyzed, students exposed to new science curricula performed better than students in traditional courses in general achievement, analytic skills, process skills, and related skills (reading, mathematics, social studies and communication), as well as developing a more positive attitude toward science. On a composite basis, the average student in new science curricula exceeded the performance of 63% of the students in traditional science courses.     

The relationship between science process abilities of teachers and science achievement of students: An experimental study

The objective of this experimental study is to investigate the relationships among science teacher characteristics and student outcomes. The selected characteristics of teachers are their understanding of science processes and their ability to control variables, and the outcomes of students are the achievement in science contents and processes. The results support the hypothesized relationships and show that the teacher ability to control variables is a more valuable characteristic than the understanding of science processes for student achievement. Conclusions are drawn about the implications for the education of science teachers.     

Differential effectiveness of alternative middle-school science sequences for students of different ethnicities

Learning Environments Research - For a sample of 367 middle-school students in the USA, learning environment criteria were used to evaluate two alternative science curriculum sequences...     

理解理科综合定位理科教学

本文在分析“理科综合”考试的性质和目标基础上,得出“理科综合”考试对教学的导向作用和“理解综合”考试的核心均是“创新”和“实践”。进而提出作为新形势下的现代理科教师,在教学活动中如何以“理科综合”为导向作用,定位教学目标和方法,如何有效地进行“创新教学”和“实践教学”,以适应素质教育的需要。