Enhancing Digital Simulated Laboratory Assessments: a Test of Pre-Laboratory Activities with the Learning Error and Formative Feedback Model

Digitally simulated laboratory assessments (DSLAs) may be used to measure competencies such as problem solving and scientific inquiry because they provide an environment that allows the process of learning to be captured. These assessments provide many benefits that are superior to traditional hands-on laboratory tasks; as such, it is important to investigate different ways to maximize the potential of DSLAs in increasing student learning. This study investigated two enhancements—a pre-laboratory activity (PLA) and a learning error intervention (LEI)—that are hypothesized to enhance the use of DSLAs as an educational tool. The results indicate students who were administered the PLA reported statistically lower levels of test anxiety when compared to their peers who did not receive the activity. Furthermore, students who received the LEI scored statistically higher scores on the more difficult problems administered during and after the DSLA. These findings provide preliminary evidence that both a PLA and LEI may be beneficial in improving students’ performance on a DSLA. Understanding the benefits of these enhancements may help educators better utilize DSLAs in the classroom to improve student science achievement.

     

Effects of active‐learning experiences on achievement,attitudes, and behaviors in high school biology

Active‐learning labs for two topics in high school biology were developed through the collaboration of high school teachers and university faculty and staff and were administered to 408 high school students in six classrooms. The content of instruction and testing was guided by State of Texas science objectives. Detailed teacher records describing daily classroom activities were used to operationalize two types of instruction: active learning, which used the labs; and traditional, which used the teaching resources ordinarily available to the teacher. Teacher records indicated that they used less independent work and fewer worksheets, and more collaborative and lab‐based activities, with active‐learning labs compared to traditional instruction. In‐class test data show that students gained significantly more content knowledge and knowledge of process skills using the labs compared to traditional instruction. Questionnaire data revealed that students perceived greater learning gains after completing the labs compared to covering the same content through traditional methods. An independent questionnaire administered to a larger sample of teachers who used the lab‐based curriculum indicated that they perceived changing their behaviors as intended by the student‐centered principles of the labs. The major implication of this study is that active‐learning–based laboratory units designed and developed collaboratively by high school teachers and university faculty, and then used by high school teachers in their classrooms, can lead to increased use of student‐centered instructional practices as well as enhanced content knowledge and process learning for students. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 960–979, 2007     

The Impact of Learner’s Prior Knowledge on Their Use of Chemistry Computer Simulations: A Case Study

It is complicated to design a computer simulation that adapts to students with different characteristics. This study documented cases that show how college students’ prior chemistry knowledge level affected their interaction with peers and their approach to solving problems with the use of computer simulations that were designed to learn electrochemistry. Students with different prior knowledge levels were found to use different approaches to solving problems with the use of computer simulations. In particular, the cases showed that students with a high level of prior knowledge tended to use the equations and formulas to accomplish the learning tasks and then use the computer simulations to confirm their predictions. Students with a low level of prior chemistry knowledge used the computer simulations as the main resources to accomplish their tasks. Considerations of individual differences and the integration of learning materials were suggested for further research on instructional use of computer simulations.     

BOOK REVIEWS

A study conducted with 15 teachers and their classes in two Western Australian high schools indicated that laboratory activities are perceived by a majority of teachers and students as an effective means of learning science. However, laboratory activities were not presented on a regular basis in most classes and appeared to have low status compared to activities that emphasized science content. The laboratory activities were of a cookbook type with most emphasis being directed to data collecting. Few opportunities were provided for students to plan investigations or to interpret data.

The amount of time scheduled for laboratory activities was dependent on the topic being taught, the ability level of the students, the presence of disruptive students, the use of non‐science classrooms, large class sizes, and a perception of insufficient time because of the amount of content to be covered. Several of the problems observed in laboratory activities were attributable to a management style which enabled students to be slow to get started and for off‐task behaviour to increase towards the end of each lesson. Also, the rule structure was different in laboratory activities in the sense that student movement and behaviour was not as strictly controlled as in other activities. Students appeared to have at least two agendas, to get the job done and to interact socially with others. In most instances the cognitive demands of the activities were such that both agendas could be realized.

The results of the study have implications for the manner in which teachers plan and implement laboratory activities and for in‐service and pre‐service programmes designed to improve and sustain the quality of science teaching.     

Extending Students’ Practice of Metacognitive Regulation Skills with the Science Writing Heuristic

Metacognition can be described as an internal conversation that seeks to answer the questions, ‘how much do I really know about what I am learning’ and, ‘how am I monitoring what I am learning?’ Metacognitive regulation skills are critical to meaningful learning because they facilitate the abilities to recognize the times when one's current level of understanding is insufficient and to identify the needs for closing the gap in understanding. This research explored how using the Science Writing Heuristic (SWH) as an instructional approach in a laboratory classroom affected students’ practice of metacognitive skills while solving open-ended laboratory problems. Within our qualitative research design, results demonstrate that students in the SWH environment, compared to non-SWH students, used metacognitive strategies to a different degree and to a different depth when solving open-ended laboratory problems. As students engaged in higher levels of metacognitive regulation, peer collaboration became a prominent path for supporting the use of metacognitive strategies. Students claimed that the structure of the SWH weekly laboratory experiments improved their ability to solve open-ended lab problems. Results from this study suggest that using instruction that encourages practice of metacognitive strategies can improve students’ use of these strategies.     

How to Improve Spoken English Teaching through Role play in College Schools in China

In the present competitive society, English becomes more and more important, and how to master English becomes one popular topic for everyone. English is a communicative tool, however, traditional teaching method used in English teaching is not very suitable, and the traditional teaching is very boring and inefficient. The traditional teaching does not give students a real world situation to practice their English speaking and it does not cultivate their learning interests. This phenomenon continued in the students English learning for many years, and students can not use the English to communicate in their daily life. This phenomenon appears in oral English teaching in college schools as well, In order to solve the problems, the paper firstly describes the problem of English spoken teaching in college schools in Chi na. And then it analyzes the performance of problem and the cause of problems. The aim is that we find the problem and deficiency of Eng lish spoken teaching in college schools and use Role play as an effective way to solve these problems. Moreover, how to uses the role play specifically in the spoken English teaching, So that the role play can help teacher change traditional teaching method, enhance students’ oral communication ability, cultivate the students’learning interests and improve spoken English teaching in colleges.     

Instructional effectiveness of higher-order questions: The devil is in the detail of students’ use of questions

Research has repeatedly established that the theoretical benefits of various scaffolds do not match their actual impact on learning. It has been argued that the instructional effectiveness of scaffolds largely depends on very detailed aspects of the learning activities associated with the scaffolds within specific environments. From this perspective and, in order to predict and control learning outcomes in the context of specific instances of scaffolds, there is a need for a detailed cognitive analysis of learning activities (e.g. analyses of students’ scaffold use). Accordingly, the current study investigated how students actually use adjunct questions while studying a text and how the quantity and quality of usage determine students’ learning outcomes (performance). Forty-two university students in two conditions were required to study a short science text for 15 min. Results revealed that the quality of students’ use of instructional devices accounted for their final performance.     

Educating and Measuring Choice: A Test of the Transfer of Design Thinking in Problem Solving and Learning

Educators aim to equip students with learning strategies they can apply when approaching new problems on their own. Teaching design-thinking strategies may support this goal. A first test would show that the strategies are good for learning and that students spontaneously transfer them beyond classroom instruction. To examine this, we introduce choice-based assessments (CBAs). CBAs measure how people learn when there is minimal guidance and they must make decisions as independent learners. Here, sixth-grade students completed multiple design activities that emphasized either seeking constructive criticism or exploring a space of alternatives. Afterward, they completed the CBAs, which measured strategy transfer. Results showed that lower-achieving students benefitted most from instruction, exhibiting a relative increase in their use of design-thinking strategies. In addition, strategy choices correlated with prior achievement measures and appeared to mediate performance in and learning from the CBAs. The choices to use the two strategies themselves were not correlated, which indicates that they are not subsets of a larger construct, such as growth mindset. In sum, CBAs enabled a double demonstration: design-thinking strategies may improve learning and problem solving, and design-thinking instruction may improve the likelihood of lower-achieving students choosing to use effective strategies in novel settings that require new learning.     

独立学院大学英语网络自主学习定性研究

网络自主学习是大学英语教学改革的一个重要尝试。通过对独立学院学生的半结构化访谈,发现大学英语网络自主学习具有比传统教学更多的优势,极大地提高了学生的听说能力以及自主学习能力。但同时学生不能合理有效地利用网络资源,自主学习策略有待改进。拟对促进网络环境下独立学院学生的英语自主学习的开展提出建议。     

Learning residential electrical wiring through computer simulation: The impact of computer‐based learning environments on student achievement and cognitive load

Multimedia learning environments such as computer simulations are widely accepted as tools for supporting science learning. Although the design of multimedia learning environments can be domain specific, few studies have focused on the use of computer simulations for learning residential electrical wiring. This study aimed to determine whether students using computer simulations learned better than traditional classroom learners in the domain of residential wiring. A quasi‐experiment was implemented with 169 high school students. The simulation group participated in a series of computer simulations, whereas the control group received lectures and demonstrations from an instructor. Students' cognitive load as elevated by multimedia leaning tasks was compared with that of students learning using traditional methods. The simulation group learned significantly better and reported higher cognitive load than did the control group. Moreover, the simulation group managed cognitive resources more efficiently on transfer of learning than did the control group. Having more opportunities to interact with a simulation‐based learning environment could result in higher cognitive load. The higher cognitive load seemed to result in better performance on the achievement test and, therefore, the learners' mental effort was possibly invested mainly in meaning making in the virtual learning environments. Discussion of the results, instruments and research design, as well as suggestions for future studies are provided.     

Factors influencing student perceptions of high-school science laboratory environments

Science laboratory learning has been lauded for decades for its role in fostering positive student attitudes about science and developing students’ interest in science and ability to use equipment. An expanding body of research has demonstrated the significant influence of laboratory environment on student learning. Further research has demonstrated differences in student perceptions based on giftedness. To explore the relationship between giftedness and students’ perceptions of their learning environment, we examined students’ perceptions of their laboratory learning environment in biology courses, including courses designated for high-achieving versus regular-achieving students. In addition, to explore the relationship between students’ perceptions and the extent of their experience with laboratory learning in a particular discipline, we examined students’ perceptions of their laboratory learning environment in first-year biology courses versus elective biology courses that require first-year biology as a prerequisite. We found that students in high-achieving courses had a more favourable perception of all aspects of their learning environment when compared with students in regular courses. In addition, student perceptions of their laboratory appeared to be influenced by the extent of their experience in learning science. Perceptions were consistent amongst regular- and high-achieving students regardless of grade level. In addition, perceptions of students in first year and beyond were consistent regardless of grade level. These findings have critical applications in curriculum development as well as in the classroom. Teachers can use student perceptions of their learning environment to emphasize critical pedagogical approaches and modify other areas that enable enhancement of the science laboratory learning environment.     

A Comparison of the Degree of Student Satisfaction using a Simulation or a Traditional Wet Lab to Teach Physical Properties of Ice

It is often difficult to offer food chemistry students traditional, hands‐on laboratory experiences due to lack of funds for equipment, insufficient laboratory space, or the nature of distance education. A traditional wet laboratory exercise was developed to demonstrate the effects of the physical properties of ice formation when making high‐quality sorbets, varying the amounts of sugar, water, and stabilizer. This wet lab was compared to a simulated, detective‐based crime scene investigation (CSI) of why a famous food scientist's sorbet had become a “stiff.” Forty‐six food chemistry students were randomly assigned to groups, completing either the traditional wet lab or the simulated lab 1st before completing the 2nd type of laboratory. While there were preferences for one lab over another, there were no differences in the learning outcomes between the 2 laboratory formats. Students who preferred the simulated lab felt they could move at their own pace and were able to stop and review the simulation to understand the concepts more clearly. Traditional wet lab proponents liked working in groups and having immediate access to instructors. From the initial evaluation it appears that simulations could be used as replacements for hands‐on laboratory experiences or could serve as effective introductions to laboratory principles and concepts, resulting in increased student learning.     

USING COMPUTER CONFERENCING IN TEACHING

For 3years, I have been teaching neuroscience courses by using computer conferencing to complement the traditional lectures. Typically, the conferencing involved local, on‐campus students, although one semester the class was combined from on‐campus and off‐campus students. For most of my 33‐year teaching career, I had used the teaching approach that most professors use, which is what educational theorists call “instructivist.” Critics call that “stand and deliver.” Lecturing is an efficient way to dispense organized information, but it does not ensure learning nor is it very effective in showing students how to learn on their own.

Instructivism can be enriched by complementing it with “constructivist” approaches. Constructivists argue that there is a direct relationship between the amount of learning that occurs and the extent to which the environment provides a rich source of engaging experiences in which students construct their own knowledge and understanding. I have found that such an environment is readily provided by computer conferencing.

In my teaching of neuroscience, I have used a network software system (FORUM) for small student groups to conduct a variety of constructivist learning activities. Within weekly deadlines, students worked in groups at their own pace and time of convenience. My impression of the advantages of such conferencing for constructivist activities include the promotion of socialization in “cyberspace,” providing an environment for team learning, the reduction of social problems in face‐to‐face instruction, increased teaching and learning efficiency, more comprehensive means for assessing student learning, and improved quality of student work.     

University Students’ Conceptualization and Interpretation of Topographic Maps

This study investigates the strategies and assumptions that college students entering an introductory physical geology laboratory use to interpret topographic maps, and follows the progress of the students during the laboratory to analyze changes in those strategies and assumptions. To elicit students’ strategies and assumptions, we created and refined a topographic visualization test that was administered before and after instruction to 26 students during the first semester of the study and to 92 students during the second semester. To more deeply understand how students think about and conceptualize topographic maps, we focused on eight individual students who were interviewed about their pretest and posttest answers as well as videotaped during three laboratory sessions. We found that even students who claim never to have worked with topographic maps often perform impressively on their pretests by making useful assumptions about symbolic topographic information. Some students, however, begin with less productive assumptions that may be unfamiliar to some instructors (e.g., thinking that the spacing of contour lines indicates elevation instead of slope). Initial success should not be misinterpreted, however, as an integrated understanding of topographic maps. Only in posttest interviews do most students express explanations integrating multiple normative assumptions. In addition to highlighting the strategies and assumptions that college students use to interpret topographic maps, we outline the implications of these findings for the design of learning objectives, curricular activities, and assessments for topographic lessons in introductory college geology courses and the training of future geoscientists.     

How Can We Show You,If You Can't See It? Trialing the Use of an Interactive Three-Dimensional Micro-CT Model in Medical Education

Teaching internal structures obscured from direct view is a major challenge of anatomy education. High-fidelity interactive three-dimensional (3D) micro-computed tomography (CT) models with virtual dissection present a possible solution. However, their utility for teaching complex internal structures of the human body is unclear. The purpose of this study was to investigate the use of a realistic 3D micro-CT interactive visualization computer model to teach paranasal sinus anatomy in a laboratory setting during pre-clinical medical training. Year 1 (n = 79) and Year 2 (n = 59) medical students undertook self-directed activities focused on paranasal sinus anatomy in one of two laboratories (traditional laboratory and 3D model). All participants completed pre and posttests before and after the laboratory session. Results of regression analyses predicting post-laboratory knowledge indicate that, when students were inexperienced with the 3D computer technology, use of the model was detrimental to learning for students with greater prior knowledge of the relevant anatomy (P < 0.05). For participants experienced with the 3D computer technology, however, the use of the model was detrimental for students with less prior knowledge of the relevant anatomy (P < 0.001). These results emphasize that several factors need to be considered in the design and effective implementation of such models in the classroom. Under the right conditions, the 3D model is equal to traditional laboratory resources when used as a learning tool. This paper discusses the importance of preparatory training for students and the technical consideration necessary to successfully integrate such models into medical anatomical curricula.     

Can Interactive Web-based CAD Tools Improve the Learning of Engineering Drawing? A Case Study

Many current Web-based learning environments facilitate the theoretical teaching of a subject but this may not be sufficient for those disciplines that require a significant use of graphic mechanisms to resolve problems. This research study looks at the use of an environment that can help students learn engineering drawing with Web-based CAD tools, including a self-correction component. A comparative study of 121 students was carried out. The students were divided into two experimental groups using Web-based interactive CAD tools and into two control groups using traditional learning tools. A statistical analysis of all the samples was carried out in order to study student behavior during the research and the effectiveness of these self-study tools in the learning process. The results showed that a greater number of students in the experimental groups passed the test and improved their test scores. Therefore, the use Web-based graphic interactive tools to learn engineering drawing can be considered a significant improvement in the teaching of this kind of academic discipline.     

Elementary Science Students’ Motivation and Learning Strategy Use: Constructivist Classroom Contextual Factors in a Life Science Laboratory and a Traditional Classroom

The purpose of this study was to describe the influence of constructivist classroom contextual factors in a life science laboratory and a traditional science classroom on elementary students’ motivation and learning strategy use. The Constructivist Teaching Inventory was used to examine classroom contextual factors. The Motivated Strategies for Learning Questionnaire was used to examine student motivation and learning strategies. A Wilcoxon nonparametric test determined that constructivist teaching practices were found to occur more often in the life laboratory than in the regular classroom. Although constructivist teaching practices increased at each observation time in both the regular classroom and in the life laboratory, a Friedman test determined that they were not statistically significant increases. Paired sample t tests determined that student motivation and learning strategies were higher in the life laboratory than in the regular classroom overall as well as at each survey time except for learning strategies at Post 1. A 2 × 4 between 3 within repeated measure ANOVA determined that student MSLQ motivation and learning strategy scores in the regular classroom varied statistically significantly by teacher. Student MSLQ motivation and learning strategy scores in the life laboratory varied statistically significantly by teacher. To triangulate data, individual interviews of students were conducted at the end of the semester and revealed students regard the life laboratory as an asset to their science study; however, students do appreciate and value working in the learning environment that the regular classroom provides.