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1.
ABSTRACT:  Secondary science teachers who integrate food safety (FS) into curricula can provide FS knowledge and skills to youth while reinforcing science skills and concepts. National science education standards and the Biological Science Curriculum Study 5E Inquiry-based Learning Model were used to design an online training, Food Safety FIRST. The training has 3 modules, each with 15 h of web-based instruction, interactive discussion, and tools to conduct experiments or critical evaluation projects. A CD-ROM, web site ( http://foodsafetyfirst.org ), and lab kit were developed to accompany module activities. Seventy-one teachers registered for the program; 38 matched pretest/posttest evaluations were analyzed. When asked their intention to teach FS in the next year, enrollees responded "definitely" (60.5%) or "possibly" (34.2%), reaching potentially 3570 students. Participants found the training very valuable (71.1%) and were significantly more comfortable teaching FS at posttest (3.6 ± 0.5 on a 4-point Likert scale) than at pretest (2.8 ± 1.0; P < 0.0001, n = 35). Self-reported FS practices also improved from pretest (24.8 ± 5.7 out of a possible 35) to posttest (27.7 ± 4.8; P < 0.001, n = 32). On 4-point Likert scales, teachers were confident answering FS questions (3.4); confident that if they did a good job teaching this topic, students would be interested in FS (3.4); and confident FS concepts taught would meet national science standards (3.4). They found the program satisfactory for demonstrating inquiry-based learning (3.8). Most agreed that they would change FS habits (3.2). Using 5-point scales, participants agreed that they felt more able to critically evaluate FS information on the Internet (4.2) and that the training was enjoyable in an online format (4.3).  相似文献   

2.
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.  相似文献   

3.
Integration of molecular modeling into General Chemistry lab encourages students to dually process molecular concepts both verbally and pictorially. When students are tested utilizing questions not previously encountered the dual processing of information can contribute to a transfer to knowledge. General Chemistry students utilized molecular modeling in lab and a comparison of a treatment and nontreatment group during two semesters is presented for a pretest, posttest, and on semester exam questions. The treatment group tested significantly higher than the nontreatment group on both the posttest and semester exam questions related to molecular concepts illustrating that there was a transfer of knowledge.  相似文献   

4.
研究性教学近年来开始在高校教学中得到青睐和重视,因为它注重培养学生的实践能力和创新意识,强调教学对象的主体性和教学过程的实践性和探究性。网络技术的应用为高等教育英语专业的研究性教学带来了便利条件,网络平台的构建为研究性教学提供了可靠保障。  相似文献   

5.
This study investigated the effects of scaffolds as cognitive prompts and as metacognitive evaluation on seventh-grade students' growth of content knowledge and construction of scientific explanations in five inquiry-based biology activities. Students' scores on multiple-choice pretest and posttest and worksheets for five inquiry-based activities were analyzed. The results show that the students' content knowledge in all conditions significantly increased from the pretest to posttest. Incorporating cognitive prompts with the explanation scaffolds better facilitated knowledge integration and resulted in greater learning gains of content knowledge and better quality evidence and reasoning. The metacognitive evaluation instruction improved all explanation components, especially claims and reasoning. This metacognitive approach also significantly reduced students' over- or underestimation during peer-evaluation by refining their internal standards for the quality of scientific explanations. The ability to accurately evaluate the quality of explanations was strongly associated with better performance on explanation construction. The cognitive prompts and metacognitive evaluation instruction address different aspects of the challenges faced by the students, and show different effects on the enhancement of content knowledge and the quality of scientific explanations. Future directions and suggestions are provided for improving the design of the scaffolds to facilitate the construction of scientific explanations.  相似文献   

6.
Learning with hands-on experiments can be supported by providing essential information virtually during lab work. Augmented reality (AR) appears especially suitable for presenting information during experimentation, as it can be used to integrate both physical and virtual lab work. Virtual information can be displayed in close spatial proximity to the correspondent components in the experimentation environment, thereby ensuring a basic design principle for multimedia instruction: the spatial contiguity principle. The latter is assumed to reduce learners' extraneous cognitive load and foster generative processing, which supports conceptual knowledge acquisition. For the present study, a tablet-based AR application has been developed to support learning from hands-on experiments in physics education. Real-time measurement data were displayed directly above the components of electric circuits, which were constructed by the learners during lab work. In a two group pretest–posttest design, we compared university students' (N = 50) perceived cognitive load and conceptual knowledge gain for both the AR-supported and a matching non-AR learning environment. Whereas participants in both conditions gave comparable ratings for cognitive load, learning gains in conceptual knowledge were only detectable for the AR-supported lab work.  相似文献   

7.
Inquiry-based learning is gaining popularity in science curricula, international research and development projects as well as teaching. One of the underlying reasons is that its success can be significantly improved due to the recent technical developments that allow the inquiry process to be supported by electronic learning environments. Inquiry-based learning is often organized into inquiry phases that together form an inquiry cycle. However, different variations on what is called the inquiry cycle can be found throughout the literature. The current article focuses on identifying and summarizing the core features of inquiry-based learning by means of a systematic literature review and develops a synthesized inquiry cycle that combines the strengths of existing inquiry-based learning frameworks. The review was conducted using the EBSCO host Library; a total of 32 articles describing inquiry phases or whole inquiry cycles were selected based on specific search criteria. An analysis of the articles resulted in the identification of five distinct general inquiry phases: Orientation, Conceptualization, Investigation, Conclusion, and Discussion. Some of these phases are divided into sub-phases. In particular, the Conceptualization phase is divided into two (alternative) sub-phases, Questioning and Hypothesis Generation; the Investigation phase is divided into three sub-phases, Exploration or Experimentation leading to Data Interpretation; and the Discussion phase is divided into two sub-phases, Reflection and Communication. No framework bringing together all of these phases and sub-phases was found in the literature. Thus, a synthesized framework was developed to describe an inquiry cycle in which all of these phases and sub-phases would be present. In this framework, inquiry-based learning begins with Orientation and flows through Conceptualization to Investigation, where several cycles are possible. Inquiry-based learning usually ends with the Conclusion phase. The Discussion phase (which includes Communication and Reflection) is potentially present at every point during inquiry-based learning and connects to all the other phases, because it can occur at any time during (discussion in-action) or after inquiry-based learning when looking back (discussion on-action).  相似文献   

8.
科学的本质与教育的本质统一于科学探究。探究式教学是注重学生自主探究和自我实现的教学方式,是由高级需要所驱动的。这种教学模式符合学习型人假设的内在要求。建构主义的知识观和学习观包括建构主义学习理论的学生观,是探究式教学的理论基础。在探究式教学的具体实践中,尤其强调在具体情境中提出问题、提供观测实验的证据,并对证据做出科学解释。  相似文献   

9.
The objective of this study was to investigate the effects of three different screen sizes (small, medium and large) and two types of multimedia instruction (text only and text with pictorial annotation) on vocabulary learning. One hundred thirty‐five Korean middle school students learning English as a foreign language were randomly distributed into six groups and were given a pretest, a self‐study multimedia instruction, a posttest and a retention test online. The pretest, posttest and retention test were identical and included 30 vocabulary questions. Results show that the large screen multimedia instruction helped the students to learn English vocabulary more effectively than the small screen instruction as demonstrated on both the posttest and retention test. However, there was little difference in vocabulary learning between the text‐only and text‐with‐pictorial annotation instructions. Although visual perception can be influenced by each learner's expectations and knowledge, using a smaller screen for instruction causes more challenges for learners to perceive and comprehend vocabulary learning.  相似文献   

10.
培养学生的科学探究能力,提高科学素养,是探究式教学的价值所在。教学不仅要使学生获取知识,还要使学生习得获取知识的方法,提高解决问题的能力。探究式教学体现学生自主习得,教师要充分利用蕴藏在学校、家庭和社会中的化学教学资源,落实自主、合作、开放、探究学习的课堂氛围。  相似文献   

11.
Inquiry-based learning is one approach to improving the quality of undergraduate education by moving toward more student-directed, interactive methods of learning while focusing on learning how to learn. This paper deals with a missing component in the inquiry-related literature—the extra-pedagogical challenges of introducing and maintaining inquiry-based learning in the curriculum. Based in the collective experience of McMaster University, a mid-size Canadian university that has been a pioneer in inquiry pedagogy, the paper describes the challenges administrators faced in supporting the introduction of inquiry-based learning as components of traditional courses, as inquiry-based courses, and as inquiry-based degree programs. Derived from interviews, the paper presents a series of strategies and lessons for introducing and maintaining inquiry pedagogy in the curriculum. These lessons will be broadly useful to administrators, curriculum designers and faculty developers and should be widely applicable to institutes of higher education.  相似文献   

12.
Inquiry-based instruction including problem-, project-, and case-based methods often incorporate complex sets of learning activities. The numerous activities run the risk of becoming disconnected in the minds of learners and teachers. STAR.Legacy is a software shell that can help designers organize learning activities into an inquiry cycle that is easy to understand and pedagogically sound. To ensure that classroom teachers can adapt the inquiry activities according to their local resources and needs, STAR.Legacy was built upon four types of design principles: learner centered, knowledge centered, assessment centered, and community centered. We describe how a STAR.Legacy constructed for an educational psychology course helped preservice teachers design and learn about effective inquiry-based instruction. This work was supported by grant #R305F60090 from the Department of Education. The authors thank the educational psychology students for their contributions to this paper and Amy Ryce for her editorial talents.  相似文献   

13.
Inquiry-based instruction is an important teaching strategy in science education that can be implemented to achieve different learning goals (e.g. the learning of science content or of inquiry skills and strategies). Inquiry-based instruction is often combined with guidance attempting to assist students to effectively engage in inquiry activities and, through this engagement, reach the intended goals. In recent research, the type and amount of guidance needed to foster student’s learninghas received considerable attention. One challenge in interpreting the results of this line of research is the manifold meanings of the term ‘guidance’ and its implementation in inquiry-based instruction. Moreover, the effectiveness of a particular type and amount of guidance may also depend on the learning goal that is to be achieved. In this paper, we draw on existing research and theoretical considerations in attempting to disentangle three major dimensions in which the implementation of guidance may vary: (a) the degree of autonomy, (b) the degree of conceptual information, and (c) the cognitive domain of guidance. We discuss how these dimensions can be used to capture and systemise fidings of existing studies as well as to infer desiderata for further research on the role of guidance in inquiry-based instruction.  相似文献   

14.
Inquiry-based labs have been shown to greatly increase student participation and learning within the biological sciences. One challenge is to develop effective lab exercises within the constraints of large introductory labs. We have designed a lab for first-year biology majors to address two primary goals: to provide effective learning of the unique aspects of the plant life cycle and to gain a practical knowledge of experimental design. An additional goal was to engage students regardless of their biology background. In our experience, plant biology, and the plant life cycle in particular, present a pedagogical challenge because of negative student attitudes and lack of experience with this topic. This lab uses the fern Ceratopteris richardii (C-Fern), a model system for teaching and research that is particularly useful for illustrating alternation of generations. This lab does not simply present the stages of the life cycle; it also uses knowledge of alternation of generations as a starting point for characterizing the her1 mutation that affects gametophyte sexual development. Students develop hypotheses, arrive at an appropriate experimental design, and carry out a guided inquiry on the mechanism underlying the her1 mutation. Quantitative assessment of student learning and attitudes demonstrate that this lab achieves the desired goals.  相似文献   

15.
Inquiry-based working by teachers includes working with an inquiry habit of mind, being data literate, contributing to a culture of inquiry at the school level, and creating a culture of inquiry at the classroom level. Inquiry-based working has been found to contribute to educational improvements and the professionalisation of teachers. This study investigates the relationship between psychological factors – attitude, experienced social pressure, self-efficacy and collective efficacy – and inquiry-based working by teachers. Questionnaire data were collected from a representative sample of 249 Dutch teachers. The results show a significant relationship between self-efficacy and all aspects of inquiry-based working. In addition, collective efficacy, attitude and experienced social pressure are all related to aspects of inquiry-based working. School leaders and teacher educators who aim to stimulate inquiry-based working should not only focus on increasing teachers’ inquiry skills, but also on psychological factors related to inquiry-based working.  相似文献   

16.
This quantitative case study used a pre- and posttest design for exploring the gender differences in secondary school students’ (n?=?131, 45 males and 86 females) learning of the force concept when an interactive engagement type of teaching was used. In addition, students’ ability to interpret multiple representations (i.e., representational consistency) was documented by a pre- and posttest and scientific reasoning ability by a pretest only. Males significantly outperformed females in learning of the force concept, pre- and posttest representational consistency, and pretest scientific reasoning. However, the gender difference in learning of the force concept was not significant when ANCOVA was conducted using pretest results of representational consistency and scientific reasoning as covariates. This appeared to indicate that the gender difference in learning gain was related to students’ abilities before the instruction. Thus, the teaching method used was equally effective for both genders. Further, our quantitative finding about the relation between representational consistency and learning of the force concept supports the assumption that multiple representations are important in science learning.  相似文献   

17.
Inquiry-based science teaching involves supporting pupils to acquire scientific knowledge indirectly by conducting their own scientific experiments, rather than receiving scientific knowledge directly from teachers. This approach to instruction is widely used among science educators in many countries. However, researchers and policymakers have recently called the effectiveness of inquiry approaches into doubt. Using nationally-representative linked survey and administrative data we find little evidence that the frequency of inquiry-based instruction is positively associated with teenagers’ performance in science examinations. This finding is robust to the use of different measures of inquiry, different measures of attainment, across classrooms with varying levels of disciplinary standards and across gender and prior attainment subgroups.  相似文献   

18.
This study seeks to develop and evaluate a modified lab inquiry approach to teaching about nature of science (NOS) to secondary students. Different from the extended, open-ended inquiry, this approach makes use of shorter lab inquiry activities in which one or several specific NOS aspects are manipulated deliberately so that students are compelled to experience and then reflect on these NOS aspects. In this study, to let students experience theory-laden observation, they were provided with different “theories” in order to bias their observations in the lab inquiry. Then, in the post-lab discussion, the teacher guided students to reflect on their own experience and explicitly taught about theory-ladenness. This study employs a quasi-experimental pretest–posttest design using the historical approach as the control group. The results show that the manipulated lab inquiry approach was much more effective than the historical approach in fostering students’ theory-laden views, and it was even more effective when the two approaches were combined. Besides, the study also sought to examine the practical epistemological beliefs of students concerning theory-ladenness, but limited evidence could be found.  相似文献   

19.
This paper reports an initial study on investigating inquiry-based learning in science in an upper primary class guided by an inquiry-based learning model in a seamless learning environment. Two questions are addressed: (1) how students advanced their domain knowledge?; and (2) how students developed their inquiry skills? One teacher and 27 Grade-four students from a local primary school were involved in the study. Six inquiry-based learning lessons focusing on a scientific “rustproofing” learning unit were conducted in a seamless learning environment, initiated in a digital classroom and extended to online discussions on a social network platform. Qualitative data were collected and analysed over two weeks. The results show ways that the students advanced their domain knowledge and developed their inquiry skills.  相似文献   

20.
The purpose of this quasi-experimental study was to determine the effects of a field-based, inquiry-focused course on pre-service teachers?? geoscience content knowledge, attitude toward science, confidence in teaching science, and inquiry understanding and skills. The field-based course was designed to provide students with opportunities to observe, compare, and investigate geological structures in their natural environment and to gain an understanding of inquiry via hands-on learning activities designed to immerse students in authentic scientific investigation. ANCOVA and MANCOVA analyses examining differences in outcome measures between students in the field experience (n?=?25) and education students enrolled in the traditional, classroom-based course (n?=?37) showed that students in the field course generally had significantly higher scores. Results provide evidence of the value of the field and inquiry-based approach in helping pre-service teachers develop the needed skills and knowledge to create effective inquiry-based science lessons.  相似文献   

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