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1.
This study sought to use simple, less costly, robust equipment and constructivist pedagogies, that promote and foster learning, to enable an intact class of 81 teacher trainees in a teaching programme to form their own authentic concepts through fun-filled, engaging social interactions. Data were collected by means of two-tier diagnostic assessments in a constructivist classroom environment that employed microscience equipment and activities. Questionnaires, semi-structured interviews, and observation schedules were employed to triangulate data and acquired learning skills. From the study, it was found that the variant hands-on and minds-on constructivist approach enhanced the acquisition of many learning skills, created environmental awareness, and concept formation. The implication here is that, the varied constructivist approach has the potential to change the way chemistry is taught in more pragmatic, interactive, simple, fun, and engaging ways to facilitate conceptual understanding of chemistry for sustainability and further innovations in STEM development.
相似文献2.
Supplemental instruction classes have been shown in many studies to enhance performance in the supported courses and even to improve graduation rates. Generally, there has been little evidence of a differential impact on students from different ethnic/racial backgrounds. At San Francisco State University, however, supplemental instruction in the Introductory Biology I class is associated with even more dramatic gains among students from underrepresented minority populations than the gains found among their peers. These gains do not seem to be the product of better students availing themselves of supplemental instruction or other outside factors. The Introductory Biology I class consists of a team-taught lecture component, taught in a large lecture classroom, and a laboratory component where students participate in smaller lab sections. Students are expected to master an understanding of basic concepts, content, and vocabulary in biology as well as gain laboratory investigation skills and experience applying scientific methodology. In this context, supplemental instruction classes are cooperative learning environments where students participate in learning activities that complement the course material, focusing on student misconceptions and difficulties, construction of a scaffolded knowledge base, applications involving problem solving, and articulation of constructs with peers. 相似文献
3.
This study examined relationships between conceptual understanding, self-efficacy, and outcome expectancy beliefs as preservice teachers learned science in a constructivist-oriented methods class. Participants included 49 preservice elementary teachers. Analysis revealed that participants increased in self-efficacy, outcome expectancy, and conceptual understanding. Engaging preservice teachers in hands-on, minds-on activities and discussion were important contributors. Participants reported that they would be inclined to teach from a constructivist perspective in the future. One implication from this study is that increasing the quantity of science content courses that preservice elementary teachers are required to take may not be sufficient to overcome their reluctance to teach science if some of their learning does not take place in a constructivist environment. In our teaching, we have tried to integrate pedagogy with learning science content. 相似文献
4.
Eva Erdosne Toth Lisa R. Ludvico Becky L. Morrow 《Interactive Learning Environments》2013,21(5):614-630
This study examined the characteristics of virtual and hands-on inquiry environments for the development of blended learning in a popular domain of bio-nanotechnology: the separation of different-sized DNA fragments using gel-electrophoresis, also known as DNA-fingerprinting. Since the latest scientific developments in nano- and micro-scale tools are based on molecular movement in electric fields, gel electrophoresis is an excellent model for learning-related concepts and processes. This study employed two environments (a 2D virtual laboratory (VRL) and a hands-on laboratory (HOL)) and documented the benefit of using VRLs to ground students' knowledge construction, before more complex, hands-on investigation. A comparative analysis explored how the perceptual features of the two learning environments supported students in designing experiments, evaluating data from experimental trials and reasoning for the mechanisms by which these data came about. The findings provide evidence for the design of blended inquiry-learning environments that integrate virtual and hands-on laboratories. 相似文献
5.
The cell topic was taught to 9th-grade students in three modes of instruction: (a) students “hands-on,” who constructed three-dimensional cell organelles and macromolecules during the learning process; (b) teacher demonstration of the three-dimensional model of the cell structures; and (c) teaching the cell topic with the regular learning material in an expository mode (which use one- or two-dimensional cell structures as are presented in charts, textbooks and microscopic slides). The sample included 669, 9th-grade students from 25 classes who were taught by 22 Biology teachers. Students were randomly assigned to the three modes of instruction, and two tests in content knowledge in Biology were used. Data were treated with multiple analyses of variance. The results indicate that entry behavior in Biology was equal for all the study groups and types of schools. The “hands-on” learning group who build three-dimensional models through the learning process achieved significantly higher on academic achievements and on the high and low cognitive questions’ levels than the other two groups. The study indicates the advantages students may have being actively engaged in the learning process through the “hands-on” mode of instruction/learning. 相似文献
6.
Understanding scientific concepts is a fundamental aim of science education. Conceptual understanding can be fostered through inquiry learning with experiments. However, during the Covid-19 pandemic school closures hands-on experiments could hardly be realized. Fortunately, digital technologies allow for conducting experiments virtually by using interactive simulations or observing video recordings of hands-on experiments. In the present study, 154 seventh graders in remote schooling were involved in inquiry learning using either a combination of virtual and video experiments in two different orders or only virtual experiments. We hypothesized that in general inquiry learning fosters students' conceptual understanding in physics, which could be confirmed. Moreover, we expected the combinations to be more effective than learning with virtual experiments only due to the complementary roles of the prior, which was, however, not the case. We conclude that virtual and video experiments can be recommended to teachers if hands-on experimentation is not possible. 相似文献
7.
Cognitive Research and Elementary Science Instruction: From the Laboratory,to the Classroom,and Back 总被引：1，自引：0，他引：1
Can cognitive research generate usable knowledge for elementary science instruction? Can issues raised by classroom practice drive the agenda of laboratory cognitive research? Answering yes to both questions, we advocate building a reciprocal interface between basic and applied research. We discuss five studies of the teaching, learning, and transfer of the “Control of Variables Strategy” in elementary school science. Beginning with investigations motivated by basic theoretical questions, we situate subsequent inquiries within authentic educational debates—contrasting hands-on manipulation of physical and virtual materials, evaluating direct instruction and discovery learning, replicating training methods in classroom, and narrowing science achievement gaps. We urge research programs to integrate basic research in “pure” laboratories with field work in “messy” classrooms. Finally, we suggest that those engaged in discussions about implications and applications of educational research focus on clearly defined instructional methods and procedures, rather than vague labels and outmoded “-isms.” 相似文献
8.
Evaluating two approaches to helping college students understand evolutionary trees through diagramming tasks 总被引：1，自引：0，他引：1 
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下载免费PDF全文 To understand evolutionary theory, students must be able to understand and use evolutionary trees and their underlying concepts. Active, hands-on curricula relevant to macroevolution can be challenging to implement across large college-level classes where textbook learning is the norm. We evaluated two approaches to helping students learn macroevolutionary topics. Treatment 1 is a laboratory for the software program EvoBeaker designed to teach students about evolutionary trees. We tested Treatment 1 among nine college-level biology classes and administered pre/posttests to assess learning gains. We then sought to determine whether the learning gains from Treatment 1 were comparable to those derived from an alternate hands-on treatment, specifically the combination of a prerecorded lecture on DVD and paper-based activity based on Goldsmith's Great Clade Race (Treatment 2). Comparisons of pre- and posttests among participants using either Treatment 1 or 2 show large learning gains on some misconceptions and skills beyond knowledge gained from reading standard textbook entries. Both treatments performed equivalently in overall learning gains, though both had areas where they performed better or worse. Furthermore, gains among students who used Treatment 1 representing a wide range of universities suggest that outcomes are potentially applicable to a variety of "real-world" biology classes. 相似文献
9.
ABSTRACT: Introductory Food Science courses are most often lecture-based courses, but some include limited laboratory experiences. As described in this paper, the course minimizes lecture and maximizes experiential or "hands-on" learning by using an immersion approach to teach basic concepts of food science. Additionally, it requires students to work in groups to accomplish tasks, thus providing valuable experience in working cooperatively. The course has been taught in this basic manner at Ohio State for 10 y. Analysis of pre-test and post-test results shows that none of the students pass the pre-test and 92% pass the post-test. In 2002, the average increase in scores from the pre-test to the post-test was 65.7 ± 14.7 (n = 22). 相似文献
10.
Effects of Combined Hands-on Laboratory and Computer Modeling on Student Learning of Gas Laws: A Quasi-Experimental Study 总被引：1，自引：1，他引：1
Xiufeng Liu 《Journal of Science Education and Technology》2006,15(1):89-100
Based on current theories of chemistry learning, this study intends to test a hypothesis that computer modeling enhanced hands-on
chemistry laboratories are more effective than hands-on laboratories or computer modeling laboratories alone in facilitating
high school students' understanding of chemistry concepts. Thirty-three high school chemistry students from a private all-girl
high school in northeastern United States were divided into two groups to participate in a quasi-experimental study. Each
group completed a particular sequence of computer modeling and hands-on laboratories plus pre-test and post-tests of conceptual
understanding of gas laws. Each group also completed a survey of conceptions of scientific models. Non-parametric tests, i.e.
Friedman's one-way analysis of ranks and Wilcoxon's signed ranks test, showed that the combined computer modeling and hands-on
laboratories were more effective than either computer simulations or hands-on laboratory alone in promoting students' conceptual
understanding of the gas law on the relationship between temperature and pressure. It was also found that student conception
of scientific models as replicas is statistically significantly correlated with students' conceptual understanding of the
particulate model of gases. The findings mentioned earlier support the recent call for model-based science teaching and learning
in chemistry. 相似文献
11.
Gorodetsky Malka Fisher Kathleen M. Wyman Barbara 《Journal of Science Education and Technology》1994,3(3):137-144
In this paper we examine the impact of using a Macintosh-based knowledge organization toll SemNet, with prospective elementary and middle school teachers enrolled in an upper division biology course. The course models for students the ways in which they will be able to teach hands-on, minds-on science in K-8 classrooms and provides them with an in-depth understanding of a relatively small number of biology topics. This study examines changes in learning habits, metacognitive processes, retention, retrieval, and learring among students enrolled in this course. Students using SemNet tend to exhibit a significant increase in deep processing as measured by self-report. Also on the basis of self-report, SemNet students appear to acquire some cognitive skills that transfer to other courses, such as identifying main ideas and tying ideas together. SemNet students retained and retrieved nearly twice as much information about a topic, the digestive system, as a reference group. Although neither the SemNet nor the reference group exhibited transfer skills as we meansured them, there is evidence that SemNet student changed their thinking strategies. 相似文献
12.
We have developed and validated a tool for assessing understanding of a selection of fundamental concepts and basic knowledge in undergraduate introductory molecular and cell biology, focusing on areas in which students often have misconceptions. This multiple-choice Introductory Molecular and Cell Biology Assessment (IMCA) instrument is designed for use as a pre- and posttest to measure student learning gains. To develop the assessment, we first worked with faculty to create a set of learning goals that targeted important concepts in the field and seemed likely to be emphasized by most instructors teaching these subjects. We interviewed students using open-ended questions to identify commonly held misconceptions, formulated multiple-choice questions that included these ideas as distracters, and reinterviewed students to establish validity of the instrument. The assessment was then evaluated by 25 biology experts and modified based on their suggestions. The complete revised assessment was administered to more than 1300 students at three institutions. Analysis of statistical parameters including item difficulty, item discrimination, and reliability provides evidence that the IMCA is a valid and reliable instrument with several potential uses in gauging student learning of key concepts in molecular and cell biology. 相似文献
13.
Marjorie Darrah Roxann Humbert Jeanne Finstein Marllin Simon John Hopkins 《Journal of Science Education and Technology》2014,23(6):803-814
Most physics professors would agree that the lab experiences students have in introductory physics are central to the learning of the concepts in the course. It is also true that these physics labs require time and money for upkeep, not to mention the hours spent setting up and taking down labs. Virtual physics lab experiences can provide an alternative or supplement to these traditional hands-on labs. However, physics professors may be very hesitant to give up the hands-on labs, which have been such a central part of their courses, for a more cost and time-saving virtual alternative. Thus, it is important to investigate how the learning from these virtual experiences compares to that acquired through a hands-on experience. This study evaluated a comprehensive set of virtual labs for introductory level college physics courses and compared them to a hands-on physics lab experience. Each of the virtual labs contains everything a student needs to conduct a physics laboratory experiment, including: objectives, background theory, 3D simulation, brief video, data collection tools, pre- and postlab questions, and postlab quiz. This research was conducted with 224 students from two large universities and investigated the learning that occurred with students using the virtual labs either in a lab setting or as a supplement to hands-on labs versus a control group of students using the traditional hands-on labs only. Findings from both university settings showed the virtual labs to be as effective as the traditional hands-on physics labs. 相似文献
14.
Carol Scarff Seatter 《Interchange》2003,34(1):63-87
This paper attempts to provide some productive starting points for discussion in the context of science teaching. Embedded in the current practice of methodologies such as messing about, hands-on, minds-on activities, science-technology-society related approaches, and inquiry-based learning, is often a sense of confusion and frustration. Such current methodologies in elementary science teaching are founded on constructivist learning theory. This paper attempts to pinpoint possible ways in which this child-centered, interactive learning theory can lead to confusion for students and teachers alike. It attempts to distinguish the necessary criteria for successful science teaching from much of today's practice in the elementary school science class. It does not attempt to draw conclusions on the reasons behind some of the practices. 相似文献
15.
Anita Grover Tai Ning Lam C. Anthony Hunt 《Journal of Science Education and Technology》2008,17(4):366-372
We present a simulation tool to aid the study of basic pharmacology principles. By taking advantage of the properties of agent-based
modeling, the tool facilitates taking a mechanistic approach to learning basic concepts, in contrast to the traditional empirical
methods. Pharmacodynamics is a particular aspect of pharmacology that can benefit from use of such a tool: students are often
taught a list of concepts and a separate list of parameters for mathematical equations. The link between the two can be elusive.
While wet-lab experimentation is the proven approach to developing this link, in silico simulation can provide a means of
acquiring important insight and understanding within a time frame and at a cost that cannot be achieved otherwise. We suggest
that simulations and their representation of laboratory experiments in the classroom can become a key component in student
achievement by helping to develop a student’s positive attitude towards science and his or her creativity in scientific inquiry.
We present results of two simulation experiments that validate against data taken from current literature. We follow with
a classroom example demonstrating how this tool can be seamlessly integrated within the traditional pharmacology learning
experience. 相似文献
16.
综合实践活动作为课程改革的一个新的课程领域推出以来,人们对该课程的认识出现了一些混乱和偏差。因此,我们要理清综合实践活动课程在理论上的发展脉络,从实践的角度梳理出中小学所创造出的有代表性的实施模式和适应综合实践活动的考试评价制度改革措施及其效果,从而加深人们对综合实践课程的认识,更好地落实这一课程的目标。 相似文献
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18.
This paper is based on the first author’s extensive examination of her teaching and her students’ learning in a senior high school Biology classroom at a coeducational K-12 independent college in Victoria, Australia, over a five-year period. Research was guided by the following questions: (1) How can students become more aware of the specific biological terminology that they will need to use to communicate their understanding of biological concepts? (2) How can student familiarity with new biological terminology be enhanced? (3) Which teaching strategies might be most effective across the diverse range of abilities and learning styles within a senior Biology classroom? Three key data-sets ([1] Development of specific teaching procedures; [2] Student responses to using the teaching procedures; [3] Teacher journal entries and reflections) were analysed supported by Korthagen’s ALACT model. Findings support the notion that genuine educational change is linked to teacher change, driven by teachers themselves, drawing new insights into students’ learning. 相似文献
19.
A typical undergraduate biology curriculum covers a very large number of concepts
and details. We describe the development of a Biology Concept Framework (BCF) as
a possible way to organize this material to enhance teaching and learning. Our
BCF is hierarchical, places details in context, nests related concepts, and
articulates concepts that are inherently obvious to experts but often difficult
for novices to grasp. Our BCF is also cross-referenced, highlighting
interconnections between concepts. We have found our BCF to be a versatile tool
for design, evaluation, and revision of course goals and materials. There has
been a call for creating Biology Concept Inventories, multiple-choice exams that
test important biology concepts, analogous to those in physics, astronomy, and
chemistry. We argue that the community of researchers and educators must first
reach consensus about not only what concepts are important to test, but also how
the concepts should be organized and how that organization might influence
teaching and learning. We think that our BCF can serve as a catalyst for
community-wide discussion on organizing the vast number of concepts in biology,
as a model for others to formulate their own BCFs and as a contribution toward
the creation of a comprehensive BCF. 相似文献
20.
《学习科学杂志》2013,22(2):243-256
Educational technology supports meaningful learning and enables the presentation of spatial and dynamic images, which portray relationships among complex concepts. The Technology-Enabled Active Learning (TEAL) Project at the Massachusetts Institute of Technology (MIT) involves media-rich software for simulation and visualization in freshman physics carried out in a specially redesigned classroom to facilitate group interaction. These technology-based learning materials are especially useful in electromagnetism to help students conceptualize phenomena and processes. This study analyzes the effects of the unique learning environment of the TEAL project on students' cognitive and affective outcomes. The assessment of the project included examining students' conceptual understanding before and after studying electromagnetism in a media-rich environment. We also investigated the effect of this environment on students' preferences regarding the various teaching methods. As part of the project, we developed pre- and posttests consisting of conceptual questions from standardized tests, as well as questions designed to assess the effect of visualizations and experiments. The research population consisted of 811 undergraduate students. It consisted of a small- and a large-scale experimental groups and a control group. TEAL students improved their conceptual understanding of the subject matter to a significantly higher extent than their control group peers. A majority of the students in the small-scale experiment noted that they would recommend the TEAL course to fellow students, indicating the benefits of interactivity, visualization, and hands-on experiments, which the technology helped enable. In the large-scale implementation students expressed both positive and negative attitudes in the course survey. 相似文献