Virtual and Physical Experimentation in Inquiry-Based Science Labs: Attitudes, Performance and Access

This study investigated the learning dimensions that occur in physical and virtual inquiry-based lab investigations, in first-year secondary chemistry classes. This study took place over a 2 year period and utilized an experimental crossover design which consisted of two separate trials of laboratory investigation. Assessment data and attitudinal data were gathered and analyzed to measure the instructional value of physical and virtual lab experiences in terms of student performance and attitudes. Test statistics were conducted for differences of means for assessment data. Student attitudes towards virtual experiences in comparison to physical lab experiences were measured using a newly created Virtual and Physical Experimentation Questionnaire (VPEQ). VPEQ was specifically developed for this study, and included new scales of Usefulness of Lab, and Equipment Usability which measured attitudinal dimensions in virtual and physical lab experiences. A factor analysis was conducted for questionnaire data, and reliability of the scales and internal consistency of items within scales were calculated. The new scales were statistically valid and reliable. The instructional value of physical and virtual lab experiences was comparable in terms of student performance. Students showed preference towards the virtual medium in their lab experiences. Students showed positive attitudes towards physical and virtual experiences, and demonstrated a preference towards inquiry-based experiences, physical or virtual. Students found virtual experiences to have higher equipment usability as well as a higher degree of open-endedness. In regards to student access to inquiry-based lab experiences, virtual and online alternatives were viewed favorably by students.     

Exploring the Development of College Students' Situational Interest in Learning Science

This quasi-experimental study explores how student cumulative situational interest, short-term preference generated by particular conditions such as novel experiences can be developed into better individual interest, an enduring predisposition to engage in certain activity such as chemistry lessons. A continuous intervention of integrating novelty and aesthetic experience into teaching was used for the experimental group (n?=?64) while another class of 105 students studying another course of physical science without the intervention of novelty and aesthetics served as a comparison group. The analysis of covariance comparing the two group students' pre- and post-test perceptions of learning science revealed that the experimental group outperformed the comparison group in their perceptions of interest, enjoyment, and aesthetics. The weekly assessment of student situational interest indicated that the experimental group students' situational interests were well maintained by two leading learning activities: demonstrations and hands-on experiments with novelty and aesthetic experience. The above results provide empirical evidence to support the theory of interest development, which proposes that the development goes through a cumulative and progressive procedure.     

Spiral and Project-Based Learning with Peer Assessment in a Computer Science Project Management Course

Different learning methods such as project-based learning, spiral learning and peer assessment have been implemented in science disciplines with different outcomes. This paper presents a proposal for a project management course in the context of a computer science degree. Our proposal combines three well-known methods: project-based learning, spiral learning and peer assessment. Namely, the course is articulated during a semester through the structured (progressive and incremental) development of a sequence of four projects, whose duration, scope and difficulty of management increase as the student gains theoretical and instrumental knowledge related to planning, monitoring and controlling projects. Moreover, the proposal is complemented using peer assessment. The proposal has already been implemented and validated for the last 3 years in two different universities. In the first year, project-based learning and spiral learning methods were combined. Such a combination was also employed in the other 2 years; but additionally, students had the opportunity to assess projects developed by university partners and by students of the other university. A total of 154 students have participated in the study. We obtain a gain in the quality of the subsequently projects derived from the spiral project-based learning. Moreover, this gain is significantly bigger when peer assessment is introduced. In addition, high-performance students take advantage of peer assessment from the first moment, whereas the improvement in poor-performance students is delayed.     

Upper Secondary School Physical Science Curricula in New Zealand after the National Qualifications Framework Reforms

The recent structural reforms in New Zealand education have given schools and teachers unprecedented freedom in curricular design and delivery. Using official educational award statistics for 2004 and data arising from a study of 23 schools' upper secondary science curricula in the same year, this study represents an early monitoring of the impact of the reforms on upper secondary enrolments and course compilations in the physical sciences using biology as a reference point. Enrolments in physics and chemistry courses relative to biology did not appear to have changed, but there had been an expansion of physical science education through combined science programmes in years 12 and 13, although the profile of physical science in these tended to be low. Teachers exhibited a strong liking for highly focussed laboratory-based internally assessed modules, and it is recommended that curriculum designers provide a greater variety of internally-assessed modules specifically targeting unconventional physical science programmes. An erratum to this article can be found at     

New Pedagogies on Teaching Science with Computer Simulations

Teaching science with computer simulations is a complex undertaking. This case study examines how an experienced science teacher taught chemistry using computer simulations and the impact of his teaching on his students. Classroom observations over 3 semesters, teacher interviews, and student surveys were collected. The data was analyzed for (1) patterns in teacher-student-computer interactions, and (2) the outcome of these interactions on student learning. Using Technological Pedagogical Content Knowledge (TPCK) as a theoretical framework, analysis of the data indicates that computer simulations were employed in a unique instructional cycle across 11 topics in the science curriculum and that several teacher-developed heuristics were important to guiding the pedagogical approach. The teacher followed a pattern of “generate-evaluate-modify” (GEM) to teach chemistry, and simulation technology (T) was integrated in every stage of GEM (or T-GEM). Analysis of the student survey suggested that engagement with T-GEM enhanced conceptual understanding of chemistry. The author postulates the affordances of computer simulations and suggests T-GEM and its heuristics as an effective and viable pedagogy for teaching science with technology.     

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.     

材料专业物理化学教学改革探索

针对材料专业学生学习物理化学过程中易出现的畏难、兴趣不高的现状,提出紧密联系材料学进行教学、结合生活实例培养学生积极性、通过讲述科学发展的奇闻逸事激发学生兴趣等方法来改良物理化学教学过程。     

The Impact of Design-Based STEM Integration Curricula on Student Achievement in Engineering,Science, and Mathematics

The new science education reform documents call for integration of engineering into K-12 science classes. Engineering design and practices are new to most science teachers, meaning that implementing effective engineering instruction is likely to be challenging. This quasi-experimental study explored the influence of teacher-developed, engineering design-based science curriculum units on learning and achievement among grade 4–8 students of different races, gender, special education status, and limited English proficiency (LEP) status. Treatment and control students (n = 4450) completed pretest and posttest assessments in science, engineering, and mathematics as well as a state-mandated mathematics test. Single-level regression results for science outcomes favored the treatment for one science assessment (physical science, heat transfer), but multilevel analyses showed no significant treatment effect. We also found that engineering integration had different effects across race and gender and that teacher gender can reduce or exacerbate the gap in engineering achievement for student subgroups depending on the outcome. Other teacher factors such as the quality of engineering-focused science units and engineering instruction were predictive of student achievement in engineering. Implications for practice are discussed.     

Competency-Based Reforms of the Undergraduate Biology Curriculum: Integrating the Physical and Biological Sciences

The National Experiment in Undergraduate Science Education project funded by the Howard Hughes Medical Institute is a direct response to the Scientific Foundations for Future Physicians report, which urged a shift in premedical student preparation from a narrow list of specific course work to a more flexible curriculum that helps students develop broad scientific competencies. A consortium of four universities is working to create, pilot, and assess modular, competency-based curricular units that require students to use higher-order cognitive skills and reason across traditional disciplinary boundaries. Purdue University; the University of Maryland, Baltimore County; and the University of Miami are each developing modules and case studies that integrate the biological, chemical, physical, and mathematical sciences. The University of Maryland, College Park, is leading the effort to create an introductory physics for life sciences course that is reformed in both content and pedagogy. This course has prerequisites of biology, chemistry, and calculus, allowing students to apply strategies from the physical sciences to solving authentic biological problems. A comprehensive assessment plan is examining students’ conceptual knowledge of physics, their attitudes toward interdisciplinary approaches, and the development of specific scientific competencies. Teaching modules developed during this initial phase will be tested on multiple partner campuses in preparation for eventual broad dissemination.     

Sustaining Reform-Based Science Teaching of Preservice and Inservice Elementary School Teachers

This study examined the influence of a professional development program based around commercially available inquiry science curricula on the teaching practices of 27 beginning elementary school teachers and their teacher mentors over a 2 year period. A quantitative rubric used to score inquiry elements and use of data in videotaped lessons indicated that education students assigned to inquiry-based classrooms during their methods course or student teaching year outperformed students without this experience. There was also a significant positive effect of multi-year access to the kit-based program on mentor teaching practice. Recent inclusion of a “writing in science” program in both preservice and inservice training has been used to address the lesson element that received lowest scores—evaluation of data and its use in scientific explanation.     

Twenty First Century Science: Insights from the Design and Implementation of a Scientific Literacy Approach in School Science

Although the term “scientific literacy” has been increasingly used in recent years to characterise the aim of school science education, there is still considerable uncertainty about its meaning and implications for the curriculum. A major national project in England, Twenty First Century Science, is evaluating the feasibility of a more flexible science curriculum structure for 15‐year‐old and 16‐year‐old students, centring around a core course for all students with a scientific literacy emphasis. Over 12,000 students in 78 schools have followed this course since September 2003. The development of a detailed teaching programme is an important means of clarifying the meanings and implications of a “scientific literacy” approach. Questionnaire data from teachers at the end of the first and second years of the project (N = 40 and N = 51) show a strongly positive evaluation of the central features of the course design. Teachers perceive the scientific literacy emphasis as markedly increasing student interest and engagement. Key challenges identified are the language and reasoning demands in looking critically at public accounts of science, and the classroom management of more open discussion about science‐related issues.     

Improving Science and Literacy Learning for English Language Learners: Evidence from a Pre-service Teacher Preparation Intervention

This paper present findings from a pre-service teacher development project that prepared novice teachers to promote English language and literacy development with inquiry-based science through a modified elementary science methods course and professional development for cooperating teachers. To study the project’s impact on student learning, we administered a pre and post assessment to students (N = 191) of nine first year elementary teachers (grades 3 through 6) who experienced the intervention and who taught a common science unit. Preliminary results indicate that (1) student learning improved across all categories (science concepts, writing, and vocabulary)—although the effect varied by category, and (2) English Language Learner (ELL) learning gains were on par with non-ELLs, with differences across proficiency levels for vocabulary gain scores. These results warrant further analyses to understand the extent to which the intervention improved teacher practice and student learning. This study confirms the findings of previous research that the integration of science language and literacy practices can improve ELL achievement in science concepts, writing and vocabulary. In addition, the study indicates that it is possible to begin to link the practices taught in pre-service teacher preparation to novice teacher practice and student learning outcomes.     

ePortfolios and Reflective Practice for Food Science Students

The study investigated students’ perceptions and attitudes toward the use of ePortfolios for reflective practice as a learning and teaching strategy. A mixed‐method approach was applied to the study in a first‐year food science unit, at a regional Australian university. Data were generated via 3 sources, in order to provide the evidential basis for the investigation, including: a mixed method survey, access to student's exam results, and students’ ePortfolio reflections. The findings identified 3 key positive aspects. First, a variety of assessment methods was key to enhancing the overall learning of 1st‐year food science students. Second, ePortfolio reflective writing can be a key aspect for improved student engagement. Finally, structured ePortfolio sessions can help food science students consolidate knowledge, while also allowing them to encounter new ideas related to food science theory and develop technical knowledge. However, technological issues with using an ePortoflio can cloud the value of the reflective task for some students. Recommendations are made for how to better support and implement reflective practice using ePortfolios to enhance the learning of food science students.     

Writing Across the Curriculum: A Hermeneutic Study of Students' Experiences in Writing in Food Science Education

ABSTRACT: Writing can enhance learning by helping students put words to their thinking about course material. The purposes of this study were to assess the influence of a structured academic journal writing exercise on student learning in a food science class and to examine student responses to the experience. Hermeneutics, a philosophy of science and qualitative research method, was used to analyze journal data from 48 participating students during a 2-y period and involved 3 steps: (1) describing themes taken from a global reading of student commentaries, (2) reducing or relating themes to specific, verbatim statements found in student writings, and (3) interpreting or imposing meaning on the themes and the statements (Lanigan 1988). Hermeneutic analysis showed that journal writing was difficult at first but became easier and enjoyable over time, allowed students to relate course content to other knowledge, exposed students to course material multiple times allowing for better information retention, enhanced student understanding, helped students think critically, required students to prepare for class, gave students the opportunity to express opinions, and allowed students to experience writing as enjoyable and positive. Several minor themes suggested that most students found the experience useful to their learning. Findings from this study are consistent with neuroscience and cognitive psychology theories regarding learning and the development of reasoning skills.     

Interactions Between Classroom Discourse, Teacher Questioning, and Student Cognitive Engagement in Middle School Science

Classroom discourse can affect various aspects of student learning in science. The present study examines interactions between classroom discourse, specifically teacher questioning, and related student cognitive engagement in middle school science. Observations were conducted throughout the school year in 10 middle school science classrooms using the Electronic Quality of Inquiry Protocol, which is designed, among other things, to measure observable aspects of student cognitive engagement and discourse factors during science instruction. Results from these observations indicate positive correlations between students’ cognitive engagement and the following aspects of classroom discourse: questioning level, complexity of questions, questioning ecology, communication patterns, and classroom interactions. A sequential explanatory mixed-methods design provides a detailed look at each aspect of classroom discourse which showed a positive effect on student cognitive level during science instruction. Implications for classroom practice, teacher education, and professional development are discussed.     

Re-Examining the Similarities Between Teacher and Student Conceptions About Physical Science

There is a large body of research that has explored students’ misconceptions about science phenomena. Less research, however, has been devoted to identifying teachers’ misconceptions, but the results of the few existing studies demonstrate that teachers and students possess similar misconceptions. This study explored the physical science conceptions of 103 elementary science teachers to determine whether, after three decades of misconception research, teachers still possess conceptions similar to those held by students. We found that our teachers expressed misconceptions regarding gravity, magnetism, gases, and temperature that were similar to common student misconceptions. Suggestions for improving science professional development programs are discussed.     

Sensor-Augmented Virtual Labs: Using Physical Interactions with Science Simulations to Promote Understanding of Gas Behavior

Deep learning of science involves integration of existing knowledge and normative science concepts. Past research demonstrates that combining physical and virtual labs sequentially or side by side can take advantage of the unique affordances each provides for helping students learn science concepts. However, providing simultaneously connected physical and virtual experiences has the potential to promote connections among ideas. This paper explores the effect of augmenting a virtual lab with physical controls on high school chemistry students’ understanding of gas laws. We compared students using the augmented virtual lab to students using a similar sensor-based physical lab with teacher-led discussions. Results demonstrate that students in the augmented virtual lab condition made significant gains from pretest and posttest and outperformed traditional students on some but not all concepts. Results provide insight into incorporating mixed-reality technologies into authentic classroom settings.     

The influence of first‐year chemistry students’ learning experiences on their educational choices 1

The research reported here examined factors that influence student tertiary level chemistry enrolment choices. Students enrolled in a first‐year chemistry class were surveyed, using the Chemistry Attitudes and Experiences Questionnaire (CAEQ), three times throughout their academic year: at the start of the year (n=126), the end of the first semester (n=109), and the end of the second semester (n=84). Additionally, 19 students were interviewed using a semistructured interview protocol at the same stages throughout the year. A number of influences on student enrolment intentions are posited based on a modified version of Ajzen’s Theory of Planned Behaviour: learning experiences, attitude‐toward‐chemistry and chemistry self‐efficacy. The extent to which the students believe they had control over enrolling in chemistry and normative beliefs about enrolling in chemistry, also were investigated. Influential factors include chemistry self‐efficacy (both positive and negative), prior secondary school experiences and the fact that chemistry is compulsory for some programs. Normative beliefs exert indirect effect with students having associates in a science related field more likely to enrol in second‐year chemistry.     

Re-Examining the Similarities Between Teacher and Student Conceptions About Physical Science

There is a large body of research that has explored students’ misconceptions about science phenomena. Less research, however, has been devoted to identifying teachers’ misconceptions, but the results of the few existing studies demonstrate that teachers and students possess similar misconceptions. This study explored the physical science conceptions of 103 elementary science teachers to determine whether, after three decades of misconception research, teachers still possess conceptions similar to those held by students. We found that our teachers expressed misconceptions regarding gravity, magnetism, gases, and temperature that were similar to common student misconceptions. Suggestions for improving science professional development programs are discussed.     

Science Anxiety, Science Attitudes, and Gender: Interviews from a Binational Study

We conducted interviews with eleven groups of Danish and American students. The interview topics included gender and national components of science education, science anxiety, and attitudes toward science. The groups were science and nonscience students at the upper secondary and university levels, and one group of American science teachers who were students in a science enrichment program. The interviews revealed a variety of relationships between and among science attitudes, science anxiety, nationality, gender, and course of study. We also probed student attitudes toward constructivist versus traditional views of science.