Understandings and misunderstandings of eighth graders of five chemistry concepts found in textbooks

The research reported in this study was designed to answer three questions: (a) What misconceptions do eighth grade students have concerning the chemistry concepts from their textbooks. (b) How is reasoning ability related to misconceptions concerning chemistry concepts. (c) How effective are textbooks in teaching an understanding of chemistry concepts? Five chemistry concepts were used in the study: chemical change, dissolution, conservation of atoms, periodicity, and phase change. Problems concerning the five concepts were given to 247 eighth-grade students in order to assess the students' degree of understanding of chemistry concepts and to identify specific misconceptions. Two pencil-and-paper Piaget-type tasks were used to assess intellectual level. A comparison of intellectual level and scores on the chemistry concepts showed moderate correlations. However, the small number of formal operational students in the sample makes these results inconclusive. A study of the level of understanding of the five chemistry concepts and the nature of the misconceptions held by students indicate a general failure of textbooks to teach a reasonable understanding of chemistry concepts.     

Shift of meaning and students' alternative concepts

The purpose of the study was to establish a relationship between the shift of meaning of the concept oxidation that has taken place during the historical development, and students' alternative concepts. First Examination Board papers were examined. The result enabled us to specify the research question. In the main part of the study, multiple‐choice items were given to 3074 senior high school students. They were asked to select the correct answer and to justify their choices. Additional illustrative material was collected in four interviews with senior high school students. The analysis of the data revealed the mechanism that some students used to interpret the reactions from NO₃ ^? to NO and from CO₃ ^2? to CO₂. Students' interpretations were based on the concept of a transfer of oxide ions. The mechanism explains some correct and incorrect answers to the problems. The interview study also revealed that students were reluctant to accept water as a Brønsted base. It is suggested to use students' alternative concepts about oxidation reactions in class, helping them to better understand the half‐reaction method. Students should also understand that the meaning of the concept oxidation has shifted in the course of time. In the area of acid‐base reactions, further research is needed.     

Learning from and responding to students' questions: The authoritative and dialogic tension

In this study we present an analysis of classroom interactions initiated by students' wonderment questions. Our interest in such events arises from their potential to stimulate active intellectual engagement in classrooms, which can impact upon the subsequent development of the classroom discourse. In investigating this issue we shall address the following research question: How do student questions impact upon the teaching explanatory structure and modify the form of the ongoing classroom discourse, in selected science lessons? From data collected in a Brazilian secondary school we have selected three classroom episodes, with large differences in both the context in which the student's question emerges and in the communicative approach developed in response to it. The analysis, based on the framework proposed by Mortimer and Scott [Mortimer and Scott (2003). Meaning making in secondary science classrooms. Maidenhead: Open University Press], shows that questions made by students are important in providing feedback from students to the teacher, enabling adjustments to the teaching explanatory structure. These adjustments sometimes occur smoothly, at other times with major changes to the features of the classroom discourse, and elsewhere with misunderstanding and disagreement. The data also suggest the need to consider students' intentions and their active participation in the negotiation of both the content and structure of classroom discourse. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:174–193, 2010     

Learning natural selection through computational thinking: Unplugged design of algorithmic explanations

Computational thinking (CT) is a way of making sense of the natural world and problem solving with computer science concepts and skills. Although CT and science integrations have been called for in the literature, empirical investigations of such integrations are lacking. Prior work in natural selection education indicates students struggle to explain natural selection in different contexts and natural selection misconceptions are common. In this mixed methods study, secondary honors biology students learn natural selection through CT by engaging in the design of unplugged algorithmic explanations. Students learned CT principles and practices and applied them to learn and explain the natural selection process. Algorithmic explanations were used to scaffold transfer of natural selection knowledge across contexts through investigation of three organisms and the creation of generalized natural selection algorithms. Students' pre- and post-unit algorithmic explanations of natural selection were analyzed to answer the following research questions: (a) How do students' conceptions of natural selection change over the course of a CT focused unit? (b) What is the relationship between CT and natural selection in students' algorithmic explanations? (c) What are students' perspectives of learning natural selection with CT? Results indicate students' conceptions of natural selection increased and natural selection misconceptions decreased over the course of the unit. Within their post-unit algorithmic explanations, students used specific CT principles in conjunction with natural selection concepts to explain natural selection, which helped them to learn the details of the natural selection process and correct their natural selection misconceptions. Students indicated the use of CT in unplugged algorithmic explanations in different contexts helped them learn natural selection. This study shows unplugged CT can be used to teach students science content, and it provides an example for further CT and science integrations. Implications for the field are discussed.     

Reading motivation,perceptions of reading instruction and reading amount: a comparison of junior and senior secondary students in Hong Kong

This study examined the relations between students' reading motivation, perceptions of reading instruction and reading amount, together with grade differences, in a Chinese educational context. A total of 1,146 students from 19 secondary schools in Hong Kong voluntarily responded to a questionnaire that measured these three sets of variables. The study's findings indicated that students' intrinsic motivation was most strongly related to their reading amount. Students' perceptions of the reading instruction they received in their Chinese language class were significantly related to their reading motivation, but were only indirectly related to their reading amount, being mediated through reading motivation. Consistent with previous studies, significant grade differences were found in all types of reading motivation, students' perceptions of reading instruction and students' reading amount. The findings indicated that junior secondary students had better self‐efficacy, intrinsic motivation, extrinsic motivation and social motivation than senior secondary students. The largest grade difference was in students' self‐efficacy. Junior secondary students also perceived the reading instruction in their Chinese language class as more mastery‐oriented and read more frequently than senior secondary students. The implications of these findings for understanding Chinese students' reading motivation and for planning effective reading instruction to enhance their motivation are discussed.     

Succeeding at junior high school: Students’ reasons,their reach,and the teaching that h(inders)elps their grasp

How do we support students through their difficult transition to secondary school? Perceived value for and perceived ability to be successful during secondary school are a crucial part of any answer to this question. These perceptions and their interaction with classroom instruction are at the heart of many issues students face in this challenging new learning environment. Seeking to address these issues head-on, the current study modelled the shared role of motivation (intrinsic/extrinsic) and self-efficacy beliefs within mathematics, native and foreign language achievement across first-year secondary school studies at six schools in Japan. Modelling included pre-post subject achievement and students' instructional experiences. Longitudinal latent structural equation modelling was undertaken for each of the subjects to examine the interplay between students' motivational and instructional experiences across one academic year. Findings support the shared role of intrinsic motivation and self-efficacy within achievement (βs = 0.1–0.24), and reciprocal relationships between perceptions of instruction and students’ motivations/beliefs (βs = 0.15–0.21). Results also suggest different patterns of motivation-belief and motivation/belief-instruction interconnections across the three subjects of study researched. The pervasive role of instructional experiences for students' motivation-beliefs (from teaching to self-efficacy and intrinsic motivation, βs = 0.14–0.21) highlight the powerful role of teachers in these critical environments. Implications for theory and practice arising from the results and the integrative model utilised are discussed.     

Hunan Province Overhauls Primary and Secondary School Teaching Guidance Materials

Just before schools began in the spring, more than seventy varieties of teaching guidance materials and educational readers have been dropped from the list of school books for the secondary and elementary school phase of compulsory education in Hunan Province. This has not only greatly reduced the students' burden of studies but has lightened the financial burden of parents of primary and secondary school students in the province by more than 300 million yuan.     

Students from divorced and blended families

Nielsen summarizes the research on the impact of parents' divorce and remarriage on elementary- and secondary-school students. By pointing out the shortcomings and discrepancies in the existing research, the author dispels several stereotypes often held by school personnel about students whose parents are divorced or remarried. Specifically, this article addresses the following questions: What factors affect grades and behavior after a divorce? How are children's attitudes toward divorce and family members assessed? In what ways can schools facilitate students' adjustment and academic performance after their parents divorce or remarry?     

Curriculum Leadership and Management in Secondary Schools: A Hong Kong case study

Relatively little is known about how and by whom curriculum leadership and management occur inside secondary schools, especially in Asian contexts. This article aims to analyse curriculum decision-making in two academically effective secondary schools in Hong Kong. It employs qualitative methods to capture the contributions made by various school personnel, and in particular the principals, to curriculum leadership and management. Data for the two schools show that whilst neither of the principals plays a significant role in curriculum monitoring and innovation, the vice-principal (male), the senior teachers and teachers in one school were perceived to place more emphasis on curriculum monitoring and innovation than their counterparts in the other school. Whilst teachers in both schools shared high expectations for students' academic achievement, one subtle difference between them related to the pursuit of academic excellence. In one school, students did not exert much pressure on their teachers whereas in the other school, teachers felt they had to fulfil students' demands for good lesson preparation and take account of students' opinions of their teaching.     

Proofs produced by secondary school students learning geometry in a dynamic computer environment

As a key objective, secondary school mathematics teachers seek to improve the proof skills of students. In this paper we present an analytic framework to describe and analyze students' answers to proof problems. We employ this framework to investigate ways in which dynamic geometry software can be used to improve students' understanding of the nature of mathematical proof and to improve their proof skills. We present the results of two case studies where secondary school students worked with Cabri-Géeomèetre to solve geometry problems structured in a teaching unit. The teaching unit had theaims of: i) Teaching geometric concepts and properties, and ii) helping students to improve their conception of the nature of mathematical proof and to improve their proof skills. By applying the framework defined here, we analyze students' answers to proof problems, observe the types of justifications produced, and verify the usefulness of learning in dynamicgeometry computer environments to improve students' proof skills.     

Students' Perceptions of Teacher Support Across the Transition from Primary to Secondary School

This study examines the degree to which students' perceptions of teacher support are related to school type (primary versus secondary). The sample included 7,205 students from years 5 to 7 in primary school and years 8 to 10 in secondary school. Previous research has concluded that perceptions of school change negatively when students move from primary to secondary school. However, this research has been criticized for not accounting for age‐related changes in students' perception of school. Results from this study show a linear downwards tendency for perceived teacher support, with no obvious abrupt change between primary and secondary school. Our findings do not, therefore, support the idea that the transition from primary to secondary school affects students' perception of teacher support in a negative way.     

Adolescents' declining motivation to learn science: A follow‐up study

This is a mix methods follow‐up study in which we reconfirm the findings from an earlier study [Vedder‐Weiss & Fortus [ 2011 ] Journal of Research in Science Teaching, 48(2), 199–216]. The findings indicate that adolescents' declining motivation to learn science, which was found in many previous studies [Galton [ 2009 ] Moving to secondary school: Initial encounters and their effects. Perspectives on Education, 2(Primary‐secondary Transfer in Science), 5–21. Retrieved from www.wellcome.ac.uk/perspectives ; Osborne, Simon, & Collins, [2003] International Journal of Science Education 25(9), 1049–1079], is not an inevitable phenomenon since it appears not to occur in Israeli democratic schools. In addition to reinforcing previous results in a different sample, new results show that the differences between the two school types are also apparent in terms of students' self‐efficacy in science learning, students' perceptions of their teachers' goals emphases, and students' perception of their peers' goals orientation. Quantitative results are accompanied by rich verbal examples of ways in which students view and articulate their own and their teachers' goal emphases. Content analysis of students' interviews showed that students in traditional schools are directed more towards goals that are external and related to the outcome of learning in comparison to democratic school students who are motivated more by goals that are internal and related to the process of learning. Structure analysis of these interviews suggests that democratic school students experience a greater sense of autonomy in their science learning than traditional school students do. Implications for research on students' motivation are discussed, such as considering not only the teacher and the classroom but also the school culture. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 1057–1095, 2012     

Science choices and preferences of middle and secondary school students in Utah

This research sought to answer two questions: (1) What are Utah junior and senior high school students' preferences and choices regarding science subjects? (2) Could preferences and choices be related to the type of school, age or gender? Two thousand students from grades six through twelve participated in this study. Findings show that zoology and human anatomy and physiology were most preferred. Ecology was least prefered. Topics in the physical sciences were also low. There was a trend among girls to prefer natural sciences such as botany while boys tended to prefer the physical sciences. Generally, students' choices were limited to those subjects presently taught in the formal school curriculum. They appeared unaware of the many science related subjects outside the texts or the approved course of study.     

Hong Kong students' and teachers' beliefs on students' concerns and their causal explanation

This paper is based on research investigating Hong Kong Chinese teachers' and students' perceptions of junior secondary students' concerns and of the causes of students' difficulties. Responses from 2,045 secondary students and 214 teachers revealed that both students and teachers had similar systems of beliefs about students' concerns and the causes of students' difficulties. As dimensions of most students' concerns, both groups referred to study and educational future; friendship; physical appearance; relationships at home, with peers and at school; and psychological well-being and maladjusted behaviour. Both groups in various degrees attributed students' difficulties to students themselves, the family, school or peers. Employing Moscovici's theory of social representation as a conceptual framework, the findings illustrated that students' concerns and causal attribution are social representations shared by both student and teacher groups. Mismatch between students' and teachers' perceptions was more a divergence of views than a disparity. Students' and teachers' different social identities and their protection of group self-esteem are offered as an explanation for the mismatch in perception.     

Discursive construction of Pakistan's national identity through curriculum textbook discourses in a Pakistani school in Dubai,the United Arab Emirates

This study investigates Pakistan's secondary school children's constructions of their national identity in a Pakistani school in Dubai by drawing on data collected from students and teachers from the case school and analysing national curriculum textbooks used in the school. Informed by Foucault's concepts, the article problematises how the curriculum textbooks are employed as a technology of power for inculcating national consciousness in the students. The findings suggest that Pakistan's national curriculum textbooks deploy a specific version of Islam as a major technology, which then influences other national identity signifiers in the textbooks for shaping students' national identity. The school affords a crucial space for the complex interplay of these technologies, which construct students' ethnocentric national identities, encouraging social polarisation. This has implications for Pakistan's national social cohesion as well as the potential for subverting international peaceful coexistence and working relationships, particularly in the selected overseas study context.     

A cross-age study of the understanding of five chemistry concepts

A sample of 100 students from junior high school physical science, high school chemistry, and introductory college chemistry were examined for understanding of five chemistry concepts. The concepts addressed were chemical change, dissolution of a solid in water, conservation of atoms, periodicity, and phase change. The amount of experience with the concepts (grade level) and reasoning ability (developmental level) were examined as possible sources of variation in student understanding. Differences in understanding with respect to grade level were found to be significant for the concepts of chemical change, dissolution of a solid, conservation of atoms, and periodicity. However, few of the students in the college chemistry sample exhibited sound understanding of chemical change, periodicity, or phase change. The use of particulate terms (atoms, ions, molecules) increased across the grade levels. Reasoning ability proved to be a significant factor for student understanding of conservation of atoms and periodicity. An examination of the number and types of misconceptions across the grade levels revealed several interesting patterns and suggested sources for the students' alternative conceptions.     

Teachers' beliefs about students,and the intention of students to drop out of secondary education in Flanders

Students dropping out of education with no qualifications has been an important problem in the West for decades. Little relevant research has concentrated on school characteristics, and research into the role teachers might play in students' decision to quit school is particularly scarce. Using multilevel analyses of data for 11,844 students in 84 Flemish secondary schools, we investigate whether teachers' shared expectations of students are associated with students' intention to drop out. Particularly in vocational education, teachers' beliefs about the teachability of students influence the students' intention to quit, irrespective of perceived teacher support and students' sense of futility.     

“与众不同”的成年——澳大利亚青少年的学校生活与男性气质构建

青少年如何从青春期过渡到成年一直是人类学关注的重要问题。以一本以澳大利亚中学为田野地点的教育民族志为分析文本,结合人类学、社会学有关“成年”议题的相关文献,本文重点探讨三个问题:澳大利亚作为研究男性中学生在校经验的特点是什么;边缘学生群体的“经验”如何对已有讨论有所启发;这些田野贡献对更广义的理论讨论可能有何贡献。本文认为,澳洲青少年在学校场域中的男性气质建构过程是根植于分类实践的身份工作。青少年赋予了可见与不可见的区分要素以符号意义,并借助这些符号和意义搭建与维系群体的边界、自我的认同,以期在千篇一律的学校生活中获得“与众不同”的成年经验。     

Strategies and Activities for Initiating and Maintaining Pressure on Students' Naive Views Concerning the Nature of Science

Many science teachers devote a portion of their course to improving students' understanding of the nature of science. However, despite a one- or two-week effort, students often cling to their misconceptions. This tenacity is not surprising in light of conceptual change theory. How then are teachers to facilitate more contemporary portrayals of the nature of science? The key is to maintain in students a sense of dissatisfaction with their archaic notions of the nature of science. Drawing from my recent six year experience teaching high school biology and chemistry, this paper provides examples of how science teachers might initiate and maintain pressure on students' misconceptions regarding the nature of science, and facilitate student consideration of more contemporary views.