Knowledge Integration and Displaced Volume

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.     

Choosing competency-based,humanistic and self-directed programs: The contribution of personality and reasoning

Fifty-five college women enrolled in competency-based, humanistic or self-directed education programs completed their California Personality Inventory and listed five reasons for selecting their program. CPI results indicated that self-directed students scored lower than other students on the Femininity Scale (p.001). Using Chickering's seven vectors of change as a framework, the study found competency-based students identifying purpose and competence, humanistic students identifying inter-personal relationships and integrity, and self-directed student identifying autonomy and purpose as reasons for enrolling in their nontraditional programs. The study used these results to question the mythology that adherents to different programs are of different personality types and to argue that differences in perceptions of purpose in education distinguish students in the three programs.     

A look at student cheating in college science classes

To gain an appreciation of the collusion rate of college students in science classes, over three hundred undergraduates from western Pennsylvania were sampled for their attitudes toward different forms of cheating. The science students were sampled from several different divisions within the university. The survey used in the study was developed by Baird (1980) and holds a reliability coefficient of 89%. The results of the survey indicate that eighty three percent of the respondents had cheated in science sometime in their lives. The vast majority (86%) of the pupils had shared homework answers with classmates and most (81%) had told little lies to teachers or administrators to avoid getting in trouble. Fewer, but still the majority (75%), of the students admitted to have copied phrases directly out of glossaries, encyclopedias, journals or reference books turning it in as their own work. Most students (80%) had also used crib notes or written science terms on their shoes, wrists or other parts of their body to get by minor quizzes at times in their biology course. Over three quarters of the students admitted to cheating on large exams and major projects. When the results of the study are compared to students surveyed with the same instrument a decade ago, it is revealed that the cheating among students is growing. Alarmingly, when the results of the 1993 study were compared to the one in 1980, it was discovered that student collusion had increased in all of the categories in the questionnaire.     

Integrating Western and Aboriginal Sciences: Cross-Cultural Science Teaching

The article addresses issues of social power and privilege experienced by Aboriginal students in science classrooms. First, I present a rationale for a cross-cultural science education dedicated to all students making personal meaning out of their science classrooms. Then I describe a practical research and development project, Rekindling Traditions: Cross-Cultural Science & Technology Units, that modestly illustrates cross-cultural science teaching for years 6–11, in which Western and Aboriginal sciences are integrated. This integration is discussed in terms of the Rekindling Traditions units, including the assessment of students.     

The impact of scienceware and foundations on students' attitudes towards science and science classes

In this paper, we describe changes in students' ideas about science classes, attitudes about science, and motivations for studying science, in a classroom designed to support projectbased science learing. Using a survey designed to provide a measure of students' attitudes towards science classes and science, we have compared students enrolled in a traditional high school biology course, with students enrolled in an integrated, project-based science course called Foundations I. Survey responses were analyzed to look at differences between and within two groups of students over the course of one school year. In general, the results of this study suggest that providing students with opportunities to collect and analyze their own data in science classes results in a change in students' ideas about science classrooms. Foundations I students' increased tendency to agree with statements about using information, drawing conclusions, and thinking about problems, implies a change in their understanding of what it means to do science in school. These students, in contrast to students in the traditional Biology course, no longer describe their science experience as one of memorization, textbook reading, and test taking. Instead they see science class as a place in which they can collect data, draw conclusions, and formulate and solve problems.     

From conception to performance: How undergraduate students conceptualise and construct essays

Interviews with forty six undergraduate students enrolled in either first or third year of a Bachelor of Education explored how they conceptualised and undertook an essay writing task. The conceptual structure of their essays was analysed using the SOLO Taxonomy. Comparisons between students who wrote essays of differing levels of complexity revealed that there were major differences between students at every stage of the essay writing process. Compared to students writing essays with simple conceptual structures, students writing more complex essays engaged in processes of reconstruction rather than knowledge telling, put more effort into finding references, used organisational systems for integrating their notes according to topics or themes, built arguments rather than presented information when structuring and drafting their essays, were concerned with improving ideas and arguments as well as mechanics when revising their essays, had a more sophisticated understanding of the concepts underlying the assessment criteria, and expected and received higher grades. The results suggest a developmental process in underlying conceptualisations of both the body of knowledge forming the content of the essay, and the essay writing processes themselves. As such, attempts to improve students' essay writing skills need to shift from a focus on discrete skills to an emphasis on the relationship between students' understanding of the content and their ability to write about it. As part of the writing process, students need help building understandings representing the body of knowledge they are writing about, and this help needs to be geared to their current level of operation.     

Towards minimizing social,cultural, and intellectual disruptions embedded in literacy instruction

A personal attempt to make sense of the diverse array of information, both practical and theoretical, about the complex concept called literacy is articulated through the development of the Integrative Systems Model of literacy. The model illustrates how understanding literacy has direct applications to both instruction and research. As well, the model's utility in reconciling opposing concepts of literacy is shown. Finally, some practical suggestions for literacy instruction consistent with the model and which appear to minimize social, cultural, and intellectual disruption are presented.     

Identity Narratives: Stories from the Lives of Urban Adolescent Females

In this article, I present narratives told to me by female students of color who attended high school in an urban setting. Collected as part of an interpretive study in which I interviewed students during their senior year of high school and the first two years after graduation, these narratives focus on two themes: identity as oppositional and as contingent or shifting. I use these narratives to describe how youth simultaneously participated in and resisted school. I show that youth's shifting sets of identities shaped their participation in school, their definitions of success and the visions they held for the future. This article suggests that schools provide safe spaces for adults and young women to form mentoring relationships, that we reorganize schools so that school personnel have contact with fewer students, and finally, that we be careful not to write off students once they have children or because of poor academic records. The narratives belie simple explanations of success or failure for females of color living in poverty. Rather, they suggest the importance of listening to youth as we reformulate education policy and practice.     

“The good university teacher” as perceived by the students

Many universities, recognizing the student as the main consumer of college instruction, have begun to seek his views regarding the quality of teaching. In this study the Israeli student's concept of a good teacher has been investigated. A sample of second year university students were asked to select the three most important characteristics of a good teacher from a list of fifteen.It was shown that students attached primary importance to method of instruction. Of secondary importance was the teacher's ability to spark intellectual growth. Research talents, personality, and academic status were of relatively little concern. Social science, life science, law and medical students all concurred in emphasizing the importance of the teacher's ability to communicate ideas, whereas humanities students stressed his ability to stimulate thinking.It appears that undergraduate students rate teachers by their ability to transmit knowledge rather than according to the university's criteria of research and publication.The concepts good teacher and effective instruction are used interchangeably in this article, although they are not identical.     

A Textbook Case of the Nature of Science: Laws and Theories in the Science of Biology

The two concepts law and theory are among the most important elements of the nature of science. They represent both the tools and products of science itself. Unfortunately, the variable meanings and use of these terms in general discourse and in other school disciplines results in much confusion with respect to their proper application in a science context. The project included the design of a six-part model definition for law and theory based on a review of the literature of the philosophy of science with special reference to biology. These model definitions were then compared with those provided in a range of U.S. secondary school biology textbooks. The majority of all current major U.S. secondary school biology texts were reviewed and analyzed with respect to how the concepts of law and theory were defined and applied, in an attempt to determine whether students and teachers using such texts would gain an accurate impression of these terms and the distinction between them. This study focuses on biology instruction since a life science course is completed as a graduation requirement by virtually all U.S. high school students and as such serves as a widely shared educational experience across the nation. The term law is rarely defined in any text but various laws such as those found in genetics are frequently included as examples. The term theory is frequently defined but with a wide range of completeness of the definitions. Only rarely are theories in biology included as examples.     

Motivation and study habits

The first part of the article reviews the literature (mainly British) on the relationships between academic performance in higher education and motivation and study habits. The distinction between goal-orientated and intrinsic motivation is used to clarify the meaning of previous studies. Among the investigations of study habits, the dimension of syllabus-boundness/syllabus-freedom helps to relate psychiatric work on study difficulties to research using self-report inventories.The weakness of the questionnaire approach in explaining the relationships observed led to the use of semi-structured interviews. In the second part of the article the students' explanations of their reactions to higher education demonstrate, in particular, that fear of failure and hope for success present alternative motivations towards academic success.     

Exploring Third-Grade Student Model-Based Explanations about Plant Relationships within an Ecosystem

Elementary students should have opportunities to develop scientific models to reason and build understanding about how and why plants depend on relationships within an ecosystem for growth and survival. However, scientific modeling practices are rarely included within elementary science learning environments and disciplinary content is often treated as discrete pieces separate from scientific practice. Elementary students have few, if any, opportunities to reason about how individual organisms, such as plants, hold critical relationships with their surrounding environment. The purpose of this design-based research study is to build a learning performance to identify and explore the third-grade students’ baseline understanding of and their reasoning about plant–ecosystem relationships when engaged in the practices of modeling. The developed learning performance integrated scientific content and core scientific activity to identify and measure how students build knowledge about the role of plants in ecosystems through the practices of modeling. Our findings indicate that the third-grade students’ ideas about plant growth include abiotic and biotic relationships. Further, they used their models to reason about how and why these relationships were necessary to maintain plant stasis. However, while the majority of the third-grade students were able to identify and reason about plant–abiotic relationships, a much smaller group reasoned about plant–abiotic–animal relationships. Implications from the study suggest that modeling serves as a tool to support elementary students in reasoning about system relationships, but they require greater curricular and instructional support in conceptualizing how and why ecosystem relationships are necessary for plant growth and development.     

Misconceptions of probability: An experiment with a small-group,activity-based,model building approach to introductory probability at the college level

Summary The day-by-day observations made by the experimenter during one of the activity-based classes indicate that college students can learn to discover some elementary probability models and formulas for themselves while working on probability experiments in small groups. Furthermore, the effects of sample size upon measures of central tendency and variability can be learned by students working on activities such as those developed for the experimental course in this study. Making guesses for the probability of events and checking guesses with a hand-held calculator seems to help college students to be more cautious about probability estimates, and helps to make them aware about some of their own misconceptions about probability. Small-group problem solving, keeping a log of all class work and activities, and investigating the misuses of statistics all appeared to have a positive effect upon college students' attitudes towards mathematics, as indicated in the questionnaires filled out by the subjects in the experimental sections.The present results of this study support the hypotheses of Kahneman and Tversky [10, 12] which claimed that combinatorially naive college students rely upon availability and representativeness to estimate the likelihood of events. Kahneman and Tversky were skeptical about the possibility of helping students to overcome their reliance upon availability and representativeness. The results on the posttest in this study suggest that the manner in which college students learn probability makes a difference in their ability to overcome misconceptions that arise from availability and representativeness. Mere exposure to probability concepts is not sufficient to overcome certain misconceptions of probability. Fischbein [9] notes that the synthesis between the necessary and the possible-which is the basis of probabilistic thinking-does not in fact take place spontaneously .... He claims that science education emphasizes only the deterministic aspect, and neglects the study of uncertainty. Thus peoples' intuition of probabilistic thinking is distorted by science education's emphasis on the necessary, and neglect of the possible. This experiment suggests that the course methodology and the teaching model used in an elementary probability course can help develop peoples' intuition for probabilistic thinking. A course in which students carry out experiments, work through activities to build their own probability models, and discover counting principles for themselves can help students to overcome their misconceptions about probability, and can help restore the synthesis between the necessary and the possible which is essential to probabilistic thinking.     

Connected Chemistry—Incorporating Interactive Simulations into the Chemistry Classroom

The aim of this paper is to describe a novel modeling and simulation package, connected chemistry, and assess its impact on students' understanding of chemistry. Connected chemistry was implemented inside the NetLogo modeling environment. Its design goal is to present a variety of chemistry concepts from the perspective of emergent phenomena—that is, how macro-level patterns in chemistry result from the interactions of many molecules on a submicro-level. The connected chemistry modeling environment provides students with the opportunity to observe and explore these interactions in a simulated environment that enables them to develop a deeper understanding of chemistry concepts and processes in both the classroom and laboratory. Here, we present the conceptual foundations of instruction using connected chemistry and the results of a small study that explored its potential benefits. A three-part, 90-min interview was administered to six undergraduate science majors regarding the concept of chemical equilibrium. Several commonly reported misconceptions about chemical equilibrium arose during the interview. Prior to their interaction with connected chemistry, students relied on memorized facts to explain chemical equilibrium and rigid procedures to solve chemical equilibrium problems. Using connected chemistry students employed problem-solving techniques characterized by stronger attempts at conceptual understanding and logical reasoning.     

Fostering Distributed Science Learning Through Collaborative Technologies

TACTICS (French and Spanish acronym standing for Collaborative Work and Learning in Science with Information and Communications Technologies) is an ongoing project aimed at investigating a distributed community of learning and practice in which information and communications technologies (ICT) take the role of collaborative tools to support social construction of knowledge. This community is composed of researchers, graduate students, and high-school teachers and their students, from six schools and four universities in Canada and Mexico. It set out in fall 2000 to develop a community around the general topic of integrating concepts in science school subjects. Once a prototype community is established, it can become a terrain where different aspects could be studied. Subsequently, researchers could gradually take a back seat allowing as well as ensuring the autonomy of the school members involved and, thereby, the viability of the learning community. The set up of the proposed prototype distributed science learning community was therefore an essential yet far from trivial first step. This paper discusses the process of setting up the community and the lessons learned.     

Whitehead and a new look at teaching elementary science

If Whitehead is right, science teachers who try to increase student interest by making the science they teach more pure and by covering more material are going about their work in just the wrong way. Science, for purposes of precision in measurement, translates the dynamic world of feeling and force, of causal efficacy (for example, the San Francisco earthquake), into a static representation spatialized and given presentational immediacy (for example, the Richter scale). But notice that the Richter scale isn't very interesting (even as abstract art) apart from its connection, via symbolic reference, to the earthquake. Such reference is essential to give both a sense of reality and a feeling of interes to the subject, but it makes the science less pure, and it takes more time to cover the material. An example of teaching pure and impure formal logic is given as a case study.     

Reading,writing, and relationship: Toward overcoming the hidden curriculum of gender,ethnicity, and socio-economic class

Summary In sum, through our projects these two students, the other 17 students, and myself, were making sociology of education relevant to our emerging personhood — to the person we are always becoming. It became less an abstract course title and more something we engaged in as part and parcel of our lives. In effect, we were beginning to develop a more community-oriented education by attempting to overcome what Jim Harding (1978, pp. 287–289) has characterized as the self-defeating polarizations of form and content of learning, of theory and practice, of political and personal matters.For me, there is no turning back. I do not think I'll ever again feel comfortable in a learning environment that is not moving toward the less-structured end of the continuum. Such an environment will not eliminate the hidden curriculum of institutional sexism, racism, and class bias which permeates this society and its schools at all levels. But as the data from this research indicate, constructing such an environment in your own classroom can make a difference — can be a long beginning step toward bringing inequities grounded in gender, ethnic, and socio-economic differences out of hiding. Then, and only then, can people openly acknowledge these differences and work on keeping some of the most destructive consequences that flow from them from being transmitted as miseducation from generation to generation.     

A SYSTEMIC,STUDENT-CENTERED STUDY OF UNIVERSITY SERVICE

This paper discusses the methods and findings ofthe Student Focus Project, a sixmonth study of studentperceptions of service at a large university inBrisbane, Australia. The study paneled 24 focus groups of undergraduate students to assess theirbeliefs about a pretested set of questions concerningpositive and negative aspects of university life,successes and frustrations with university service,attempts to overcome the obstacles of university life,and what students expect from their relationship to theuniversity. Of the themes identified in the StudentFocus study, it was found that malignantbureaucracy and the balkanization ofInformation are systemic factors that negativelyinfluence student perceptions of the quality ofuniversity service. It was also found that studentstrategies for service recovery can contribute to the overall confusion andpoor performance of university services.     

Access to higher education: Targeted recruitment reform under economic development plans in the People's Republic of China

In the early 1980s, the Chinese government introduced limited economic markets accompanied by educational reforms to counteract an internal brain drain. This article explores the effectiveness of four years of recruitment and enrolment reform in technical-professional higher education in meeting the objective.In view of the extreme scarcity of higher education places, the modest enrolment biases evident in the findings are unexpected. Through the recruitment reforms the planned proportion of students from the targeted marginal groups were enrolled. On the other hand, enrolment patterns showed aggravated social class reproduction at the upper and lower end of the stratification. Gender stratification in overall proportions was modest but strongly mediated by social class and subject choice. Though upper and middle class students were poised to gain greater socio-economic mobility than the lower class, nearly half of the latter would be upwardly mobile through technical-professional higher education (TPHE).The findings show that, though economic pull factors were in evidence, the recruitment reforms were effective in preparing a suitable pool of students to carry out macro-economic plans. The reforms advanced the historic function of technical-professional education-extending access to populations hitherto largely excluded.