Effectiveness of Podcasts Delivered on Mobile Devices as a Support for Student Learning During General Chemistry Laboratories

Chemistry instructors in teaching laboratories provide expert modeling of techniques and cognitive processes and provide assistance to enrolled students that may be described as scaffolding interaction. Such student support is particularly essential in laboratories taught with an inquiry-based curriculum. In a teaching laboratory with a high instructor-to-student ratio, mobile devices can provide a platform for expert modeling and scaffolding during the laboratory sessions. This research study provides data collected on the effectiveness of podcasts delivered as needed in a first-semester general chemistry laboratory setting. Podcasts with audio and visual tracks covering essential laboratory techniques and central concepts that aid in experimental design or data processing were prepared and made available for students to access on an as-needed basis on iPhones^® or iPod touches^®. Research focused in three areas: the extent of podcast usage, the numbers and types of interactions between instructors and student laboratory teams, and student performance on graded assignments. Data analysis indicates that on average the podcast treatment laboratory teams accessed a podcast 2.86 times during the laboratory period during each week that podcasts were available. Comparison of interaction data for the lecture treatment laboratory teams and podcast treatment laboratory teams reveals that scaffolding interactions with instructors were statistically significantly fewer for teams that had podcast access rather than a pre-laboratory lecture. The implication of the results is that student laboratory teams were able to gather laboratory information more effectively when it was presented in an on-demand podcast format than in a pre-laboratory lecture format. Finally, statistical analysis of data on student performance on graded assignments indicates no significant differences between outcome measures for the treatment groups when compared as cohorts. The only statistically significant difference is between students who demonstrated a high level of class participation in the concurrent general chemistry lecture course; for this sub-group the students in the podcast treatment group earned a course average that was statistically significantly higher than those in the lecture treatment group.     

Associations among preservice teachers’ psychological traits and classroom performance ratings

Abstract

Educational theorists and researchers have often overlooked potential links between successful teaching and a teachers personal qualities. This investigation explored associations among three psychological characteristics and classroom performance ratings of prospective teachers. Fifty‐three students enrolled in a teacher education program participated in the study. The students were assessed on personality style, creative thinking, motivation, and classroom performance competency during student teaching. Correlational statistical analysis found significant relationships among three creativity measures and ratings of preservice teachers’ classroom performance. Further, regression analysis revealed originality, one subscale of creativity, was a significant predictor of effective student teaching. Findings indicate that creative constructs may have potential value in assessing teacher education candidates.     

Differential Use of Elementary Science Kits

The use of kits in elementary science classes is a growing trend in some countries. Kits provide materials and inquiry lessons in a ready-to-teach format for teachers to use in their science instruction. This study examined elementary teachers' instructional strategies, classroom practices, and assessment types in relation to the frequency of science kit use. A total of 503 elementary teachers from an urban school district received professional development, implemented kits in their classrooms for a year, and then completed a survey about science kit use and teaching practices. Despite similarities in demographic characteristics (gender, ethnicity, certification/educational level), there were significant differences in teachers' use of inquiry-based teaching and assessment practices by kit use. Teachers who reported using kits the most often were significantly more likely to report that their students designed and implemented laboratory investigations as well recorded, represented, and analyzed data. In addition, the high kit users indicated that they were more likely to use student groups, require students to use evidence to support claims, and use alternative assessments of student work including portfolios, notebooks, and long-term projects than those teachers who used kits less frequently. Those teachers who reported using kits the least often were significantly more likely to report having students practice for standardized tests. The role of kits in promoting reform-based teaching practices is discussed.     

Do honors students have more potential for excellence in their professional lives?

Universities in many countries increasingly value talent, and do so by developing special honors programs for their top students. The selection process for these programs often relies on the students’ prior achievements in school. Research has shown, however, that school grades do not sufficiently predict academic success. According to Renzulli’s (1986) three-ring model, student characteristics relating to intelligence, motivation and creativity are the most important predictors of excellent achievements in professional life. In this paper, we will investigate whether honors students differ from non-honors students in terms of these characteristics. By means of a questionnaire, more than 1,100 honors and non-honors students at Utrecht University were asked to assess themselves on six characteristics: intelligence, creative thinking, openness to experience, the desire to learn, persistence, and the drive to excel. The results showed that the honors students differed significantly from the non-honors students in terms of the combined variables as well as for the separate variables, with the exception of ‘persistence’. The strongest distinguishing factors between honors and non-honors students appeared to be the desire to learn, the drive to excel and creativity, whilst there was little difference in terms of intelligence and persistence. However, the profiles of these differences varied according to the study program. While Law and Humanities honors students differed from their non-honors peers in terms of their drive to excel, Physics honors students were primarily more eager to learn than their non-honors peers, while the LA&S honors students scored higher on creative thinking than non-honors students.     

Student perspectives on curricular change: lessons from an undergraduate lower-division biology core

Inquiry-based laboratories are acknowledged as the preferred method of instruction for development of research skills. Much has been written about changes in student performance associated with inquiry, but less is known about how students view the inquiry-based format or whether they perceive a benefit from this type of instruction. The Student Assessment of Learning Gains (SALG) survey was used to evaluate and compare student reactions to the new, inquiry-based laboratories of a lower-division undergraduate curriculum, from implementation to the present (an interval of 3 yr). Initial student response to the format and value of the inquiry labs improved over time. The quality of the graduate teaching assistants and the clarity of the laboratory manual were important variables influencing student perception. A student's perception of his/her retention of lab-related skills was strongly associated with perceptions of gains in those skills. Student responses reflect their most current laboratory experience and not a cumulative effect of participation in the core series of courses. Student success in the inquiry format was not associated with gender or status as a transfer student. The majority of students believe that their experiences in the lower-division inquiry labs have prepared them for upper-division course work.     

Activity of Prefrontal Cortex in Teachers and Students during Teaching of an Insight Problem

Metacognitive functions are important for both teachers and students to facilitate teaching and learning. The prefrontal cortex (PFC) plays a proven role in metacognition. As a pilot study, we evaluated the PFC activity of teachers and students using near‐infrared spectroscopy devices to explore the neural mechanism of PFC underlying metacognitive function during teaching and problem‐solving processes. In 14 student‐teacher pairs, participants in the teacher role gave hints via a tablet screen to facilitate solving of a tangram puzzle task by participants in the student role. The PFC activity of teachers increased after giving hints but not while planning hints. The PFC activity of students increased upon task solving after receiving hints. The PFC of teachers might play a metacognitive role in monitoring their own teaching results. The PFC activity of students might be related to the creativity process after gaining insights, as well as metacognitive process for monitoring their own behavior.     

自由:培养学生创造性的核心诉求

培养学生创造素质是学校教育的重要目标。创造性是人的天赋特性,自由乃创造之源。现实的学校教育中,自由却承受着多方面的束缚,主要有权威束缚、同伴束缚、利益束缚、自我束缚、知识束缚。培养学生创造素质,必须打破上述束缚,这一重任无疑落到了教师肩上。警惕"利欲"侵染,从"神位"上走下来,在教学中贯彻"以人为本"精神,是打破束缚的主要内容。     

High school laboratory work in Western Australia: Openness to inquiry

Laboratory work has always been the most distinctive feature of secondary science teaching and learning. With the increasing emphasis on student centred learning and the importance of developing investigation and problem-solving skills there is value in reflecting on the type of laboratory work that is carried out in the science curriculum. The purpose of this study was to determine the nature of the laboratory work undertaken by lower secondary science students, and in particular, to determine the openness to inquiry of these activities. The study also examined the factors that influence teachers in determining the type of student investigations that occur in the science laboratory. Data from a survey of Perth lower secondary science teachers reveal low levels of inquiry and interesting insights into teacher's perceptions about the benefits of open inquiry for students and the difficulities for teachers. The difficulties identified by teachers represent barriers to change that must be addressed if more open inquiry laboratory work is to be implemented in schools.     

论工科专业成人教育学生创新能力的培养与对策

随着经济高速的发展,社会对人才有了更高的要求,特别是需要创新型的人才。本文分析影响工科成人教育大学生创新能力的制约因素,提出优化师资队伍,真正发挥教师主导作用;更新教育观念,构建创新教育模式;改革教学方法,真正发挥教学主渠道作用;改革课程体系,建立较为宽广而扎实的基础知识平台;强化课堂教学改革,营造问题式课堂;改革实验教学环节,培养学生的创新能力等六种培养工科专业成教学生创新能力的对策。     

Intelligent design: student perceptions of teaching and learning in large social work classes

Research into the effects of large classes demonstrates that students are disadvantaged in terms of higher order learning because interactions between teachers and students occur at lower cognitive levels. This has significance for social work education, with its emphasis on the development of critical thinking and problem solving, both higher order cognitive skills. This paper reports on quantitative and qualitative research that explored social work students’ perceptions of different teaching and learning strategies in a large mental health course designed with reference to principles of student‐centred learning and constructive alignment. Findings revealed that well‐integrated design, relevance to the real world and teacher enthusiasm were seen as most useful by students, rather than particular learning strategies per se. Higher satisfaction ratings and grades were also associated with this student‐centred course compared with an earlier traditional lecture‐style course. The paper concludes that design based on the interplay between diverse learning activities, including lecture input, strengthened the student‐centred orientation of learning and recommends further research that compares learning outcomes associated with these contrasting approaches to professional education.     

高职教育因材施教的教学艺术与教学效果研究

因材施教,是教育和教师的灵魂。对因材施教的教学艺术与效果的探讨,有利于发现孔子教育思想的深邃。教师必须从机械的传授书本知识,转化为了解学生的个性特征、兴趣和爱好,调动其积极性、创造性,进而最大限度的实现每位学生成才和成功。     

A Window into the Rural Classroom: interactive television and problem‐based activity in Australian pre‐service teacher education

ABSTRACT

This project incorporated live broadcasts of teaching from small, multi‐graded, rural schools into university lecture halls where pre‐service teacher education students in the last semester of their programmes were able to observe ‘best practice’ in a learning context that they would eventually be responsible for during their final practicum session. Interactive observation sessions were immediately followed with opportunities for students to discuss various aspects of planning, classroom organisation and teaching strategies appropriate to multi‐graded contexts with the remote classroom teacher. These ‘reverse distance education’ sessions followed an intensive lecture and tutorial series centring upon topics relevant to teaching in small rural communities. Tutorial activities placed student teachers in small rural school scenarios containing everyday ‘problems’ requiring diagnosis and the generation and analysis of solutions. At the conclusion of scenario discussions, students had networked, collaborated with colleagues and applied current research findings in generating viable solutions and considered school community reactions to these proposed solutions.

The incorporation of interactive video technology with these problem situations consolidated the concept and skill development of student teachers and increased both their real time involvement in their chosen professions, and their access to best practice. This dual focus upon a problem solving approach to teaching immersed the student teacher in situations derived from real school environments, and so encouraged a collegial and open approach to teaching. Extensive evaluations revealed that pre‐service teachers were more thoroughly prepared for rural teaching experiences, displayed competence in effective multigrade teaching skills, and exhibited control during involvement     

A case study of two exemplary biology teachers

Research has indicated that most science classrooms are not intellectually demanding and place little emphasis on small group discussions and laboratory activities. However, successful science programs and competent science teaching that can provide models for other science teachers do exist. This study sought to document the teaching practices of two exemplary biology teachers of grades 11 and 12 by means of an interpretive research methodology. Both teachers had a thorough and comprehensive knowledge of the content they were to teach and had a range of teaching strategies that could be used without a great deal of thought. Their expectations for student performance were high, consistent, and firm. Students were expected to complete a high level of academic work in discussions, in problem work, and in laboratory activities, and were encouraged to take responsibility for their own learning. A distinctive feature of these biology classes was the high level of managerial efficiency, where lessons were busy occasions for both teacher and students; students had little opportunity for off-task behavior. Both teachers actively monitored the behavior of both high- and low-ability students by moving around the room and speaking with individuals, while still maintaining control of the entire class. By manipulating questioning and the social environment, both teachers encouraged students to engage in work, gave effective praise to the whole class and to individuals, encouraged student input by referring to it, helped students to effectively use their time, and gave marks for completion of set work. Compared to research with less-successful teachers, these teaching behaviors contributed to exemplary practice.     

Video narratives to assess student teachers’ competence as new teachers

In teacher education programmes, written portfolios or text-based self-evaluations are generally used to document the development of student teachers’ competence. However, such approaches do no justice to the complex nature of teaching as they tend to lead to evidence in which teacher competencies are disconnected and removed from the actual teaching practice. In one postgraduate teacher education programme, video narratives were evaluated as a valid way to assess student teachers’ teaching competencies, promoting connections amongst different competencies, situating these in practice and showing their development over time. Data were gathered from self-reports of both teacher educators and student teachers as well as student teachers’ completed video narratives. Most student teachers succeeded in meeting the set criteria for the video narrative assignment with connected video clips and text frames. However, student teachers also came up with only a few video episodes and loosely connected clips, reflections and other sources. Although most of the students during the programme did explicitly reflect upon their personal development towards becoming a teacher, almost none of them explicitly connected these ideas to their long-term development. We conclude that video narratives show potential to be used as a valid assessment of student teachers’ teaching competence. Yet, structured guidance as well as ill-structured assignments are needed in framing assessment of student teachers in teacher preparation: the former to clarify the aims, format and criteria and the latter to enable student teachers to reflect on their teaching in a personally, meaningful way.     

‘Teach as you preach’: the effects of student‐centred versus lecture‐based teaching on student teachers’ approaches to teaching

This study investigates the effects of teaching and learning environments on student teachers’ approaches to teaching and compares a lecture‐based setting to a student‐activating teaching environment, in which self‐discovery learning by means of authentic tasks is central. Data collection (N = 852) was obtained by a pre‐test/post‐test design including the Approaches to Teaching Inventory. Though student teachers’ approaches changed significantly, the direction is only consistent with the assumption that the student‐activating experiences push students towards conceptual change/student‐focused approaches; however, not away from information transmission/teacher‐focused teaching. In fact, students’ approaches to teaching at the start of the experiment are important predictors of their scores after they followed the course on child development under both conditions. Moreover, student teachers’ changes in approaches to teaching tend to be affected by variables such as performance, academic self‐esteem, perceived workload and students’ changes in approaches to learning: variables that operate in distinct ways for diverse categories of approaches and work differently in both settings. In addition, the willingness of students to teach in the way they have been taught is not as straightforward as might be expected. Although several students became convinced of the use of the teaching methods in the experiment for their own practice, the majority of students demonstrate reflective practices, make critical judgements, formulate terms or suggest amendments to the teaching methods before simply adopting them for their own future pupils.     

Student perceptions of the cell biology laboratory learning environment in four undergraduate science courses in Spain

Cell biology is an academic discipline that organises and coordinates the learning of the structure, function and molecular composition of cells in some undergraduate biomedical programs. Besides course content and teaching methodologies, the laboratory environment is considered a key element in the teaching of and learning of cell biology. The aim of this study was to determine students’ opinions about the quality of the teaching and learning environment in cell biology laboratory practice. For this study, we used a short form of the Science Laboratory Environment Inventory (SLEI), which we adapted and translated into Spanish. The questionnaire, administered to students enrolled in four undergraduate programs, consisted of 24 questions divided into four scales: integration of content, clarity of laboratory rules, cohesion between students and teachers, and quality of laboratory infrastructures and materials. The results suggested that (1) students positively assessed the learning environment provided for cell biology practice, (2) the short Spanish form of the SLEI was a valid, reliable instrument for evaluating student satisfaction, laboratory activities, the degree of cooperation between students and teachers, and theoretical and practical organisation of content and (3) the questionnaire detected differential perceptions of the learning environment based on gender and the program studied.     

录制技术支持的师范生教学技能培养策略研究——以华文教育专业为例

依据建构主义学习理论及生态学习观,通过录制技术,对师范生进行微格教学、视频制作、主题演讲等系列活动,使教师及学生均可对教学和活动进行回顾、反思,增强对学生对教学技能的感性认识和提高实践技能。     

论英语课堂学生资源的合理开发和利用

学生资源是指来源于学生的课程资源。在英语课堂上合理地开发和利用学生资源有助于发挥学生英语学习的主动性,提高学生的英语学习兴趣,激发学生的创造性,而且还有助于实现教学目标,提升英语课堂教学效果。在英语课堂上,应从四个方面来合理开发和利用学生资源,同时英语教师应从五个方面来提高学识、能力等素质。     

Medical Student Video Use and Summative Exam Performance during the First-Year Pre-Clinical Coursework and Implications in Distance Education

ABSTRACT

Medical student use of lecture video (live-streaming and/or recorded) at a regional medical school campus that utilized distance educational technology to deliver first-year pre-clinical lecture content, was examined. Additionally, medical student video lecture use was compared to student performance on summative exams and final course grades. All learners achieved desired scientific competencies across all courses irrespective of their use of live-streamed or recorded video formats. Throughout the course of the year, medical student video use partitioned into one of two groups: students that only watched lecture in live-streaming format, and those that watched lecture only in recorded format. Interestingly, those medical students that predominantly preferred view lectures using the live-streaming format tended to achieve better summative test scores and final course grades compared to their peers that primarily utilized recorded video to obtain lecture content. Retrospectively, dimensions of personality scores were compared between the two groups (live-streaming viewers versus recorded viewers), and, of the five dimensions of personality, only the domain of conscientiousness differed between the two groups. This study suggests that, while medical students reached academic milestones utilizing either recorded or live-streamed video for obtaining lecture content during their first-year pre-clinical courses, there may be factors of learner personality influencing video use preference which in turn enhances student performance on summative exams and final course grades. These findings may have implications in curriculum design for other distance educational formats emphasizing classical scientific competencies in post-undergraduate study that rely on video delivery of lecture content.     

Beginning student teachers' opinions about teaching primary science

Conclusions Beginning student teachers have already acquired very definite views about teaching science before they begin their teacher training course. These views are generally similar to the views espoused by science educators, but are contrary to the classroom practices of many teachers. Their views seem to have origins in what the students perceive to have been meaningful and enjoyable learning experiences for themselves in their own schooling; and to a lesser extent for children they have observed. Female students who have studied more science at high school tend to favour the use of worksheets in experimental work. Several interesting questions arise from these findings: When these students begin to teach as qualified teachers, will they still espouse the same opinions? If so, does that mean that there is a ‘new wave’ of teachers entering the service who are more committed to hands-on activity work than their older colleagues? If not, what aspects of the teacher training process have caused them to change their opinions? Will these present students be using hands-on strategies themselves after they have been teaching for some time? That is, do system and school constraints effectively prevent teachers from using such strategies? Can secondary science teachers do more to influence positively their students' opinions about teaching science, such as engendering more positive attitudes to science, incorporating more hands-on work, and relying less on printed worksheets in laboratory work? This exploratory work has highlighted the concern expressed by Morrissey (1981) in that there is a great need for long term longitudinal studies of student teachers' attitudes to teaching science, with a particular focus on their teaching behaviours after graduation.