Action Research Aiming at Improving High School Science Teachers’ Teaching Proficiencies through the Development of Instructional Modules

The new Science and Technology Curriculum Framework recently issued in Taiwan advocates the teaching of integrated science and technology with greater emphasis on basic skills. Science teachers are not used to teach in this way, they need different abilities and skills in order to do so. Using various effective professional development strategies, including a collaborative action research approach, the aim of this study was to help science teachers develop professionally through the development of instructional modules on integrated science and technology. A research team was formed consisting of science educators/researchers, graduate assistants and science teachers from six junior high schools in the central area of Taiwan. In order to involve teachers collaboratively over an extended period of time, the entire study went through preparatory, elaborative and disseminative stages for three consecutive years. Various professional development opportunities were built-in. The instructional modules developed were discussed by participants of this study and evaluated by external experts before they were tried out in actual classroom settings. Both qualitative and quantitative methods, including field notes, interviews, observations, video-taping, audio-taping, document analysis, and surveys of students and teachers opinions were used to collect data for a closer examination of the effectiveness of the instructional modules and of the increase in teachers instructional proficiencies. Overall, teachers interdisciplinary experiences and knowledge increased. They were more flexible and resourceful in using instructional strategies that best fit the instructional settings. Their knowledge and skills in using information and communication technologies in science classrooms also increased considerably.     

History of Science in the Physics Curriculum: A Directed Content Analysis of Historical Sources

Although history of science is a potential resource for instructional materials, teachers do not have a tendency to use historical materials in their lessons. Studies showed that instructional materials should be adaptable and consistent with curriculum. This study purports to examine the alignment between history of science and the curriculum in the light of the facilitator model on the use of history of science in science teaching, and to expose possible difficulties in preparing historical materials. For this purpose, qualitative content analysis method was employed. Codes and themes were defined beforehand, with respect to levels and their sublevels of the model. The analysis revealed several problems with the alignment of historical sources for the physics curriculum: limited information about scientists’ personal lives, the difficulty of linking with content knowledge, the lack of emphasis on scientific process in the physics curriculum, differences between chronology and sequence of topics, the lack of information about scientists’ reasoning. Based on the findings of the analysis, it would be difficult to use original historical sources; educators were needed to simplify historical knowledge within a pedagogical perspective. There is a need for historical sources, like Harvard Case Histories in Experimental Science, since appropriate historical information to the curriculum objectives can only be obtained by simplifying complex information at the origin. The curriculum should leave opportunities for educators interested in history of science, even historical sources provides legitimate amount of information for every concepts in the curriculum.     

论网络化课堂教学环境下大学英语教师角色和教学行为的新变化

教学网络化是新时期大学英语课堂教学的必然趋势。大学英语教师的传统的知识传播者角色在淡化,榜样与伙伴、学者与学习者角色将得到强化,网络化课堂教学环境下大学英语教师还将具有作为辅助者和支持者、网络资源的开发者和课程内容研究者、网络管理员的新角色。同时,大学英语教师的教学行为也会发生新的变化,传统课堂教学中的主要教学行为失去中心地位,传统的辅助性行为成为主要教学行为,榜样、伙伴等非主导性角色的角色行为得到强化,课堂管理行为的内容与方向也要发生转变。     

The Effects of a Web-Based Learning Environment on Student Motivation in a High School Earth Science Course

Collaborating closely with a 10th-grade science teacher, we designed a Web-based learning environment (Web-LE) to improve student motivation to learn science. Factors believed to enhance intrinsic motivation (challenge, control, curiosity, and fantasy) were integrated into the instructional design of the Web-based learning tool. The Web-LE was implemented in the teacher’s 10th-grade classroom as a three-day student-centered learning activity. Data collection methods included individual student interviews, teacher interviews, motivation questionnaires, and observations. This study revealed multiple forms of evidence that the Web-LE and the associated learning activity improved student motivation. This study illustrates the benefits of educational researchers working closely with teachers using design-based research methods to successfully solve instructional problems and identify reusable design principles. Design principles for the integration of intrinsic motivation factors into the development of similar Web-LEs are presented as well as directions far future research.     

谈谈网络课程的适应性

网络课程是教育资源中非常重要的组成部分。21世纪,以计算机、远程通信及认知科学相结合的“知识媒体”的介入,对网络课程提出了更高的要求,适应性的网络课程将是未来网络课程的发展趋势。该文以网路课程基本功能模块为依据,阐述了网络课程适应性的主要体现。     

Development and Evaluation of Food Safety Modules for K‐12 Science Education

Career and educational opportunities in food science and food safety are underrecognized by K‐12 students and educators. Additionally, misperceptions regarding nature of science understanding persist in K‐12 students despite being emphasized as an important component of science education for over 100 y. In an effort to increase awareness concerning career and educational opportunities in food science and food safety and to improve the nature of science understanding among K‐12 students, a series of problem‐based learning modules was developed and pilot tested with a total of 61 K‐12 students. Results of pre‐ and postevaluations and assessments indicated that (1) interest in science, food science, and food safety increased and (2) content knowledge related to the nature of science, food science, and food safety was improved. We further suggest that these modules provide opportunities for educators in traditional as well as extracurricular settings to demonstrate important concepts contained in the newly released Next Generation Science Standards.     

Validation of an Interdisciplinary Food Safety Curriculum Targeted at Middle School Students and Correlated to State Educational Standards

ABSTRACT:  Providing effective food safety education to young consumers is a national health priority to combat the nearly 76 million cases of foodborne illness in the United States annually. With the tremendous pressures on teachers for accountability in core subject areas, the focus of classrooms is on covering concepts that are tested on state performance examinations. As a result, topics such as food safety are rarely addressed in middle school classrooms. Middle school is an ideal time to teach food safety because adolescents are in the process of setting lifelong behaviors; therefore, they are more likely to synthesize new food safety knowledge in a way that will lead to the development of lifelong behaviors. The purpose of this study was to scientifically validate an educational resource that provides a method for classroom teachers to involve young consumers in food safety education while meeting state content area curriculum standards. An interdisciplinary curriculum targeted at middle school students and correlated directly to state content standards was designed to include highly effective instructional strategies that teach food safety concepts through all core subject classes (science, math, social studies, and language arts). The curriculum was pilot tested in 5 schools using a pretest, posttest, and follow-up test assessment model. The results showed that the curriculum was highly effective at raising student knowledge (21% gain) and improving students' food handling behaviors (8.47% gain) from pretests to posttests. In addition, 6 wk after implementation, students retained 86% of their total knowledge gain as measured by a follow-up assessment.     

An instructional design case event: Exploring issues in professional practice

Cases have been recommended as an important instructional tool for developing professional knowledge across disciplines. In this paper, we begin by defining case methods, a potentially valuable instructional tool for encouraging authentic, active learning. We describe our approach to the design and use of instructional design (ID) cases, and go on to report on the design and use of a Web-based ID case in a team case competition involving six universities. Students and most officials were enthusiastic about the use of ID cases and about this event. Team collaboration and competition were noted as motivating factors for students. The findings are being used to inform ongoing research and development, which is also described.A previous version of this paper was presented at the annual meeting of the Association for Educational Communications & Technology (AECT), Albuquerque, NM, February 1997.The authors may be contacted at the Department of Educational Leadership, Foundations, and Policy, Curry School of Education, University of Virginia, Charlottesville, VA 22903-2495. Phone (804) 924-7471; fax (804) 924-0747; e-mail: Kinzie@Virginia.edu.     

An Educational Needs Assessment of Pennsylvania Workforce: Opportunities to Redefine Secondary Career and Technical Education to Meet Food Industry Needs

ABSTRACT: This article describes the outcomes of a needs assessment concerning current training needs and performance targets for non-degreed employees in the food industry. Focus groups were used to gather data from 5 food-processing companies: a fresh vegetable company, a canned vegetable company, 2 snack food companies, and a meat company. Focus group participants consisted of 1 senior-level manager each from human resource, production, quality assurance, purchasing, and product development departments within each company. The needs assessment identified 4 major themes that employers indicated as beneficial knowledge and skills for employees to possess: safety training, knowledge of food and production systems, learning and applying mathematical skills, and professional conduct. The authors anticipate that the knowledge of industry needs, with respect to the desired incoming workforce competencies and knowledge, will facilitate the development of integrated curriculum modules for secondary career and technical education programs (high school grades). These integrated curriculum modules will address the growing needs of the food industry and facilitate the development of employment skills required to function and prosper in the new global economy.     

蔬菜污染与防治对策研究

我国是一个蔬菜生产大国,蔬菜的污染主要来自两个方面：一是生产基地生态环境受到污染,如土壤、水质、大气遭受＂三废＂或重金属等污染;二是蔬菜生产过程中化学农药、化肥的大量施用、残留与转化等,本文在收集资料的基础上对蔬菜污染现状进行了调查,着重分析了残留农药对蔬菜的污染,并提出相应的防治措施即：农业防治措施、生物防治措施、科学合理的施用农药,制定相关管理的措施。     

职业院校教师知识管理平台的设计与开发

针对职业院校教师知识管理存在的诸多不足,开发了符合职业教育发展规律的教师知识管理平台。平台采用B／S的架构模式,主要设计了公共资料库、教学设计屋、交流研讨室和技能展播厅等功能模块。平台能够使教师快速获取有用的知识资源,在促进知识的分享交流中实践性隐性知识得到转换,最终达成知识的创新应用。     

The priorities established among data sources when instructional designers revise written materials

The objective of the study was to investigate the priorities instructional designers establish among data sources when they revise written materials and the relationship of their practice to standard models of formative evaluation. Two modules of printed instructional material were revised by each of eight experienced instructional designers under three treatment conditions, using a counterbalanced design. Data were collected using a think-aloud procedure. The think-aloud protocol was segmented, coded and analysed. Results show that instructional designers were significantly more likely to incorporate their own knowledge into revisions than to use feedback data, and when they did use feedback data, they preferred learner comments. They did not accurately assess their use of their own knowledge or of feedback data; they thought they used feedback data more than the results showed. These instructional designers reflected some aspects of the standard instructional design model when they revised instructional materials, but their experience has caused many of the procedures to become internalized, so they are invisible in the protocols. This research was funded in part by a grant from the Social Sciences and Humanities Research Council of Canada.     

If You Don't Know,Ask! Using Expert Knowledge to Determine What Content Is Needed in an Undergraduate Food Quality Management and Control Course

Quality management and quality control of food products are critical to producing food that is safe to consume and has consistent quality and sensory attributes. The extent to which undergraduate students are equipped with competencies in quality management/control, in theory, has a direct connection with their career potential to ensure food products and/or services meet the expectations of consumers and society. However, the most important quality management/control competencies for undergraduate food science students have yet to be identified. The objective of this study was to determine key knowledge and skills in quality management/control needed by food science graduates. A modified Delphi method was used to gather consensus on these knowledge and skills from experts in food quality management/control. Surveys were used to establish a framework of the most relevant quality management/control concepts for undergraduate food science students to learn and organize these concepts into core domains according to their relative importance. A course outline for teaching an undergraduate course on food quality management/control was developed that detailed relevant topics and depth of coverage for each of these topics. The needs assessment method used in this study to align course content with food industry's needs may be used for a wide variety of course topics.     

Professional development to support principals' vision of science instruction: Building from their prior experiences to support the science practices

The implementation of science reform must be viewed as a systems-level problem and not just focus on resources for teachers and students. High-capacity instructional leadership is essential for supporting classroom science instruction. Recent reform efforts include a shift from learning about science facts to figuring out scientific phenomena in which students use science practices as they build and apply disciplinary core ideas. We report findings from a research study on professional development (PD) to support instructional leaders' learning about the science practices. After participating in the PD, the instructional leaders' familiarity with and leadership content knowledge of the science practices significantly improved. Initially, principals used their understandings from other disciplines and content neutral visions of classrooms to make sense of science instruction. For example, they initially used their understandings of models and argument from ELA and math to make sense of science classroom instruction. Furthermore, some principals focused on content neutral strategies, like a clear objective. Over the course of the PD workshops, principals took up the language of the science practices in more nuanced and sophisticated ways. Principals' use of the language of the science practices became more frequent and shifted from identifying or defining them to considering quality and implementation in science classrooms. As we design tools to support science, we need to consider instructional leaders as important stakeholders and develop resources to specifically meet their needs. If the science feels too unfamiliar or intimidating, principals may avoid or reframe science reform efforts. Consequently, it is important to leverage instructional leaders' resources from other disciplines and content neutral strategies as bridges for building understanding in science. We argue that the science practices are one potential lever to engage in this work and shift instructional leaders' understandings of science instruction.     

Real-World Applications and Instructional Representations Among Prospective Elementary Science Teachers

This paper explores new elementary teachers' instructional representations and how these are related to their science subject matter knowledge. One pair of prospective elementary teachers studied here exhibited a well-integrated, principled, and scientifically accurate understanding of the science they were teaching. The other pair exhibited less scientifically accurate and integrated knowledge. The pair with stronger subject matter knowledge developed instructional representations that were more scientifically and pedagogically appropriate. A perspective on one aspect of pedagogical content knowledge—knowledge of instructional representations—is presented. Real-world applications are hypothesized to play a crucial mediating role for elementary teachers. The paper concludes with a discussion of implications for elementary science teacher educators and researchers, including the importance of attending to how prospective teachers apply science knowledge to real-world situations. Parts of this work were presented at the 2000 AERA and NARST meetings.     

Bringing the Science of Team Training to School-Based Teams

Teams are ubiquitous in schools in the 21st Century; yet training for effective teaming within these settings has lagged behind. The authors of this article developed 5 modules, grounded in the science of team training and adapted from an evidence-based curriculum used in medical settings called TeamSTEPPS®, to prepare instructional and administrative personnel for teamwork and to enhance their teamwork skills. The resulting 5 modules, available for download on the American Psychological Association website, are collectively called Teach Teamwork and include: Introduction to Teams and Teamwork, Communication, Mutual Support, Situation Monitoring, and Leadership. In this article, the modules and supplemental materials are described, along with recommendations for implementation.     

Comparing the Effectiveness of a Supplemental Computer-Based Food Safety Tutorial to Traditional Education in an Introductory Food Science Course

ABSTRACT: The purpose of this study was to ascertain whether a Web-based computer tutorial for food safety is an effective tool in the education of food science and nutrition students. Students completing the Web-based tutorial had a greater improvement in pre-test scores compared with post-test scores and compared with students who attended lecture only. Students completing the tutorial indicated a favorable attitude toward computer-supplemented instruction.     

Child Behavior Problems,Teacher Executive Functions,and Teacher Stress in Head Start Classrooms

Research Findings: The current article explores the relationship between teachers’ perceptions of child behavior problems and preschool teacher job stress, as well as the possibility that teachers’ executive functions moderate this relationship. Data came from 69 preschool teachers in 31 early childhood classrooms in 4 Head Start centers and were collected using Web-based surveys and Web-based direct assessment tasks. Multilevel models revealed that higher levels of teachers’ perceptions of child behavior problems were associated with higher levels of teacher job stress and that higher teacher executive function skills were related to lower job stress. However, findings did not yield evidence for teacher executive functions as a statistical moderator. Practice or Policy: Many early childhood teachers do not receive sufficient training for handling children's challenging behaviors. Child behavior problems increase a teacher's workload and consequently may contribute to feelings of stress. However, teachers’ executive function abilities may enable them to use effective, cognitive-based behavior management and instructional strategies during interactions with students, which may reduce stress. Providing teachers with training on managing challenging behaviors and enhancing executive functions may reduce their stress and facilitate their use of effective classroom practices, which is important for children's school readiness skills and teachers’ health.     

A living-systems design model for web-based knowledge management systems

Most of the currently available instructional design models were conceptualized to develop instructional solutions to needs and requirements that remain relatively stable over time. Faced with the problem of designing a knowledge management (KM) system that needed to accommodate continuously changing requirements over its fielded lifetime, we developed a new design model that is based on a living-systems approach. In this article, we briefly review currently available instructional systems design models and describe this new model and the mechanisms it contains for accommodating change and growth. We illustrate the application of the phases of the model (analyze initial requirements, design the information architecture, develop the information design, develop the interaction design, implement the Web-based system, and conduct a developmental evaluation of the system) in the development of a KM system with living-system features. All trademarks used are properties of their respective owners.