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1.
ABSTRACT

Research suggests that it is challenging for elementary students to develop conceptual understanding of trait variation, inheritance of traits, and life cycles. In this study, we report on an effort to promote elementary students’ learning of hereditary-related concepts through scientific modelling, which affords opportunities for elementary students to generate visual representations of structure and function associated with heredity. This study is part of a four-year design-based research project aimed at supporting students’ learning about life science concepts using corn as a model organism. Study data were collected during the implementation of a project-developed, multi-week, model-based curriculum module in eight third-grade classrooms located in the Midwestern United States. Through mixed methods research, we analysed video recorded observations of curriculum implementation, student artefacts, and student interviews. Results illustrate epistemic dimensions of model-based explanations (MBEs) for heredity that students prioritised, as well as significant variation in students’ MBEs in 2 of the 8 classrooms. While findings show neither students’ content knowledge nor model-based instruction associated with their MBEs, qualitative differences in teachers’ curriculum enactment, and more general approaches to science instruction, may help explain observed differences. Implications are discussed for curriculum and instruction in support of students’ MBE for heredity-related concepts.  相似文献   

2.
ABSTRACT

One of the blended learning strategies that researchers and educators commonly use in higher education is Flipped Classroom. The purpose of this case study was to explore how both professors and students perceive student engagement in flipped classrooms. Three college professors who implemented flipped classrooms and their 14 students participated in the study. Three individual faculty interviews and three student focus group interviewers were conducted. Five components of the utilization-focused evaluation model were used in the data coding. The findings revealed both positive and negative opinions depending on how they implemented the flipped classroom including the engagement of students and the environment. Faculty participants who fully implemented the flipped model had positive opinions about the implementation and student engagement, finding the model helped increase student performance and grades. In addition, the majority of student participants liked the challenges offered by the flipped classroom, which increased their engagement.  相似文献   

3.
The Thinking with Data project (TWD) expands on current notions of data literacy by (1) focusing on proportional reasoning as key to data literacy and (2) leveraging the non-mathematics disciplines to engage students in deep thinking about the context of data and the application of proportionality. A set of four 2-week, sequential modules for cross-disciplinary implementation in seventh-grade classrooms was designed and evaluated. Using a quasi-experimental approach, we found that student data literacy was increased through the focused integration of social studies, mathematics, science, and English language arts. In this article, we describe our theoretical approach to designing and implementing the modules, report on student learning gains in mathematics, and describe teacher reactions to the materials. In sum, our study provides evidence that the TWD approach has the potential to build data literacy while also allowing students to learn core discipline-based content standards.  相似文献   

4.
ABSTRACT

In order to create conditions for students’ meaningful and rigorous intellectual engagement in science classrooms, it is critically important to help science teachers learn which strategies and approaches can be used best to develop students’ scientific literacy. Better understanding how science teachers’ instructional practices relate to student achievement can provide teachers with beneficial information about how to best engage their students in meaningful science learning. To address this need, this study examined the instructional practices that 99 secondary biology teachers used in their classrooms and employed regression to determine which instructional practices are predictive of students’ science achievement. Results revealed that the secondary science teachers who had well-managed classroom environments and who provided opportunities for their students to engage in student-directed investigation-related experiences were more likely to have increased student outcomes, as determined by teachers’ value-added measures. These findings suggest that attending to both generic and subject-specific aspects of science teachers’ instructional practice is important for understanding the underlying mechanisms that result in more effective science instruction in secondary classrooms. Implications about the use of these observational measures within teacher evaluation systems are discussed.  相似文献   

5.
Background: Incorporating student voice into the science classroom has the potential to positively impact science teaching and learning. However, students are rarely consulted on school and classroom matters. This literature review examines the effects of including student voice in the science classroom.

Purpose: The purpose of this literature review was to explore the research on student voice in the science classroom. This review includes research from a variety of science education sources and was gathered and analyzed using a systematic literature review process.

Design and methods: I examined articles from a variety of educational journals. I used three key terms as my primary search terms: student voice, student perceptions, and student perspectives. The primary search terms were used in conjunction with qualifiers that included science education, science curriculum, student emergent curriculum, student centered curriculum, and science. In order to be included in the literature review, articles needed to be published in peer-reviewed, academic journals, contain clearly defined methods (including quantitative, qualitative, or mixed methods), include research conducted in K through 12 classrooms, include the term ‘student voice’, and focus specifically on science. I included articles from a variety of science classrooms including general middle school science, science-specific after-school programs, secondary science classrooms in a variety of countries, and physics, biology, and aerospace classrooms. No restrictions were placed on the country in which the research was conducted or on the date of the research.

Conclusions: The results of the literature review process uncovered several themes within the literature on student voice. Student voice research is situated within two main theoretical perspectives, critical theory and social constructivism, which I used as the main themes to structure my findings. I also identified subcategories under each main theme to further structure the results. Under critical theory, I identified three subcategories: determining classroom topics, developing science agency, and forming identities. Under social constructivism, I discovered four subcategories: forming identities, incorporating prior knowledge and experience, communicating interest in topics and classroom activities, and improving student–teacher relationship. The research supports that allowing students a voice in the classroom can lead them to feel empowered, able to construct their own meaning and value in science, demonstrate increased engagement and achievement, and become more motivated. I conclude students should be allowed a voice in the science classroom and to continue to ignore these voices would be a disservice to students and educators alike.  相似文献   


6.
ABSTRACT

Introductory undergraduate courses present an opportunity to use disciplinary concepts in solving authentic problems. Making complex natural systems accessible to students through computer-based models allows them to practice making evidence-based predictions and communicate understanding. Despite the importance of modelling tools in formal classrooms, gaps exist in our understanding of how post-secondary students engage in computer-based modelling. Introductory courses, particularly in the hydrosciences, typically do not use these tools. This mixed methods study examines students’ model-based reasoning about a water-related issue over two years in response to a flipped course model. Students in an introductory water course learned basic hydrologic content and used a computer-based water model to complete a project. Data came from a pre-/post-course assessment, student assignments, and student interviews. Results of quantitative and qualitative data analyses show that students in the revised version of the course (Year 2, n?=?53) increased their understanding of core hydrology concepts and performed better on their evaluation of a computer-based water model, than students in the initial course (Year 1, n?=?38). We tentatively attribute these observed changes to increased active learning opportunities surrounding computer-based modelling of water systems. Findings contribute to science literacy development, undergraduate science learning environment design, and undergraduate scientific modelling.  相似文献   

7.
Background: Research has primarily concentrated on adults’ implicit theories about high quality science education for all students. Little work has considered the students’ perspective. This study investigated high school students’ implicit theories about what helped them learn science.

Purpose: This study addressed (1) What characterizes high school students’ implicit theories of what facilitates their learning of science?; (2) With respect to students’ self-classifications as African American or European American and female or male, do differences exist in the students’ implicit theories?

Sample, design and methods: Students in an urban high school located in south-eastern United States were surveyed in 2006 about their thoughts on what helps them learn science. To confirm or disconfirm any differences, data from two different samples were analyzed. Responses of 112 African American and 118 European American students and responses from 297 European American students comprised the data for sample one and two, respectively.

Results: Seven categories emerged from the deductive and inductive analyses of data: personal responsibility, learning arrangements, interest and knowledge, communication, student mastery, environmental responsiveness, and instructional strategies. Instructional strategies captured 82% and 80% of the data from sample one and two, respectively; consequently, this category was further subjected to Mann-Whitney statistical analysis at p < .05 to ascertain ethnic differences. Significant differences did not exist for ethnicity but differences between females and males in sample one and sample two emerged.

Conclusions: African American and European American students’ implicit theories about instructional strategies that facilitated their science learning did not significantly differ but female and male students’ implicit theories about instructional strategies that helped them learn science significantly differed. Because students attend and respond to what they think and perceive to be important, addressing students’ implicit theories may be one way to enhance science education reform.  相似文献   

8.
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9.

The cheap and powerful personal computer (PC) has become an important and efficient tool for supporting engineering education. In this paper a PC‐based training module, AIROBOT,is presented. The purpose of this module is to provide a platform for students to develop and experiment with artificial intelligence techniques.

The training module, AIROBOT,utilizes an electronic noughts and crosses game board which is interfaced to the Scorbot‐ER VII robot and a PC. The development and implementation of the module are discussed. Two techniques developed by the students are presented to illustrate the utilization of the module. The first technique involves searching a game tree data structure. The learning involves the on‐line generation of the game tree as the games are played. An evaluation function is used to facilitate the search. The other technique is based on the artificial neural network approach using the backpropagation paradigm. The structure of the neural networks, training and performances are presented. The PC‐based training module has the potential to enhance the student understanding through the practical application of artificial intelligence. It is envisaged that similar modules can be easily integrated into most engineering undergraduate robotics courses.  相似文献   

10.
This professional development program was designed to prepare science teachers to be more student-centered and to implement newer goals for science instruction. These goals are to improve science teaching in ways that promote broader and longer-lasting learning. Secondary school science teachers in Korea are expected to follow a rigid national curriculum with large classes - often with more than 50 students. This study focuses on feedback and follow-up interaction with teacher participants who were enrolled in a month-long workshop in the U.S. before returning to Korea to implement the new ideas. Assistance was offered to help teachers develop teaching modules which were more constructivist while also assisting with assessment efforts that provided further evidence of use of the new teaching practices and their effect on student learning. Student mastery of concepts and improvement in student creativity were two aspects of the summer workshop experiences and these were evaluated to illustrate workshop effects on teacher participants in their actual classrooms. An erratum to this article is available at .  相似文献   

11.
Targeted Support for Using Technology-Enhanced Science Inquiry Modules   总被引：1，自引：1，他引：0  
Designing effective professional development experiences for technology-enhanced inquiry instruction is the goal of the Technology Enhanced Learning in Science (TELS) NSF funded Center for Learning and Teaching. In order to provide this type of support to a large number of teachers, we devised a targeted professional development approach. Participating teachers implemented short inquiry modules that featured interactive scientific visualizations. We collaborated with 16 schools in eight districts and five states. This paper reports the design, implementation, and refinement of the targeted approach. Findings from interview data show that teachers faced challenges that are often associated with enacting technology innovations in K-12 classrooms. The targeted professional development approach addressed the challenges and allowed teachers to successfully implement the modules in their classrooms. The interview data clarify teachers’ perspectives on how using technology impacted their teaching practices and their ideas about student learning. This work contributes to a growing body of literature that identifies and addresses barriers to integrating technology into K-12 classrooms.  相似文献   

12.
Abstract

Fifth-grade students (N = 103) from 4 classrooms were administered a multiple-choice test of Piaget tasks (B. J. Wadsworth, 1996). Fifty of the students were identified as preoperational in their cognitive understanding. Two of the classrooms served as the experimental group for 24 identified students; 26 students were in 2 classrooms that served as the control group. The experimental group received special lessons and activities designed to increase abilities in concrete and abstract thinking. The school had a large Hispanic population; therefore, the students received the instruction in the language in which they demonstrated mastery. Students in the experimental group showed a significantly greater increase in concrete operations than did the control group. All the students in the 2 experimental classrooms indicated greater use of concrete operations than did the students in the 2 control classrooms.  相似文献   

13.
Although the importance of language in science learning has been widely recognized by researchers, there is limited research on how science teachers perceive the roles that language plays in science classrooms. As part of an intervention design project that aimed to enhance teachers’ capacity to address the language demands of science, interview data (N = 9) were collected to understand teachers’ perceptions and experiences with a wide range of issues related to language use in science classrooms. Adopting an interpretive approach to qualitative data, the analysis revealed that the teachers perceive a wide range of student difficulties related to language use in science classrooms, especially to the use of specialized terms and writing. Although the teachers are keenly aware of how language can be a barrier to learning science, they are less certain as to what students need to know about the language of science in order to master it. The findings suggested professional support that highlights the distinctive language demands of science and how these demands differ from other subject areas could be useful to these elementary school teachers.  相似文献   

14.
ABSTRACT

Restorative approaches to school discipline are increasingly being implemented throughout the United States in an attempt to reduce reliance on suspension and eradicate the racial discipline gap. Yet, little is known about the experience of students in classrooms utilizing restorative practices (RP). This study draws on student surveys (N = 412) in 29 high school classrooms. Hierarchical linear modeling and regression analyses show that high RP-implementing teachers had more positive relationships with their diverse students. Students perceived them as more respectful and they issued fewer exclusionary discipline referrals compared with low RP implementers. In addition, the findings demonstrate some initial promise of well-implemented RP for narrowing the racial discipline gap. The study found that higher RP implementers issued fewer discipline referrals to Latino and African American students compared with lower RP implementers. The study findings have implications for equity-focused consultation in schools that honor student experience of new programming.  相似文献   

15.
Connected classroom technology (CCT) is a member of a broad class of interactive assessment devices that facilitate communication between students and teachers and allow for the rapid aggregation and display of student learning data. Technology innovations such as CCT have been demonstrated to positively impact student achievement when integrated into a variety of classroom contexts. However, teachers are unlikely to implement a new instructional practice unless they perceive the practical value of the reform. Practicality consists of three constructs: congruence with teacher’s values and practice; instrumentality—compatibility with the existing school structures; and cost/benefits—whether the reward is worth the effort. This study uses practicality as a framework for understanding CCT implementation in secondary classrooms. The experiences of three science teachers in their first year implementing CCT are compared with matched-pair mathematics teachers. Findings suggest that despite some differences in specific uses and purposes for CCT, the integration of CCT into regular classroom practice is quite similar in mathematics and science classrooms. These findings highlight important considerations for the implementation of educational technology.  相似文献   

16.
The authors use an action research (AR) approach in a collegiate studio physics class to investigate the power of partnerships via conferences as they relate to issues of establishing a student/mentor rapport, empowering students to reduce inequity, and the successes and barriers to hearing students’ voices. The graduate teaching assistant (TA, Author 1) conducted one-on-one conferences with 29 students, elicited student opinions about the progress of the course, and talked with faculty, TAs, and an undergraduate supplemental instructor for other sections of the course. At the end of the semester, the students reported increased knowledge of the TA as a person and as an instructor, and vice versa. Sixty-five percent of students reported no interest in changing circumstances to make it easier to talk about personal concerns with the TA. College students reluctantly voiced their opinions about the course, possibly due to the power structure of the classroom. Other TAs in the department expressed mostly disinterest in the project, while faculty members were interested in student learning but skeptical of student empowerment. A case study of one student is presented, wherein his attendance improved in the course and he received additional help outside class, both possibly as a result of the student/TA conferences. Students in this studio physics section were more likely to interact directly with faculty or TAs during lectures, but less likely to do so during lab sessions, than were students in a non-studio physics section.  相似文献   

17.
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18.
Middle school has been documented as the period in which a drop in students’ science interest and achievement occurs. This trend indicates a lack of motivation for learning science; however, little is known about how different aspects of motivation interact with student engagement and science learning outcomes. This study examines the relationships among motivational factors, engagement, and achievement in middle school science (grades 6–8). Data were obtained from middle school students in the United States (N?=?2094). The theoretical relationships among motivational constructs, including self-efficacy, and three types of goal orientations (mastery, performance approach, and performance avoid) were tested. The results showed that motivation is best modeled as distinct intrinsic and extrinsic factors; lending evidence that external, performance based goal orientations factor separately from self-efficacy and an internal, mastery based goal orientation. Second, a model was tested to examine how engagement mediated the relationships between intrinsic and extrinsic motivational factors and science achievement. Engagement mediated the relationship between intrinsic motivation and science achievement, whereas extrinsic motivation had no relationship with engagement and science achievement. Implications for how classroom practice and educational policy emphasize different student motivations, and in turn, can support or hinder students’ science learning are discussed.  相似文献   

19.
Background: Problem-based learning (PBL) is a teaching approach working in cooperation with self-learning and involving research to solve real problems. The first law of thermodynamics states that energy can neither be created nor destroyed, but that energy is conserved. Students had difficulty learning or misconceptions about this law. This study is related to the teaching of the first law of thermodynamics within a PBL environment.

Purpose: This study examined the effectiveness of PBL on candidate science teachers’ understanding of the first law of thermodynamics and their science process skills. This study also examined their opinions about PBL.

Sample: The sample consists of 48 third-grade university students from the Department of Science Education in one of the public universities in Turkey.

Design and methods: A one-group pretest–posttest experimental design was used. Data collection tools included the Achievement Test, Science Process Skill Test, Constructivist Learning Environment Survey and an interview with open-ended questions. Paired samples t-test was conducted to examine differences in pre/post tests.

Results: The PBL approach has a positive effect on the students’ learning abilities and science process skills. The students thought that the PBL environment supports effective and permanent learning, and self-learning planning skills. On the other hand, some students think that the limited time and unfamiliarity of the approach impede learning.

Conclusions: The PBL is an active learning approach supporting students in the process of learning. But there are still many practical disadvantages that could reduce the effectiveness of the PBL. To prevent the alienation of the students, simple PBL activities should be applied from the primary school level. In order to overcome time limitations, education researchers should examine short-term and effective PBL activities.  相似文献   

20.
Abstract

Integrating climate change into environmental education programs and formal science classrooms can be difficult, as the issue remains controversial and highly politicized among the American public. This study proposes that the same cultural values that shape worldview differences and divide public opinion on anthropogenic climate change will influence if and how science educators support education on the topic. An online survey with quantitative and qualitative measures was distributed among science educators in the southeastern United States to test what, if any, impact cultural cognition has on their opinions about climate change education. The results suggest that respondents’ cultural values have a significant influence on their intentions to support climate change education and preferences for curricula content. The findings also suggest potential avenues for the field of environmental education to develop climate change materials that may help decrease unintentional biases among science educators and more effectively engage their support in teaching its causes and potential solutions regardless of worldview differences.  相似文献   

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