Using a computer simulation to compare expert/novice problem-solving subroutines

Hierarchical problem-solving strategies employed in solving exercise science problems were examined in this study, which also tested the validity of an educational computer simulation. Hypothesis testing was used as the theoretical base for the study of differences in problem-solving within the computer simulation. In a previous study two groups of undergraduate (novices) and graduate students were compared in their ability to solve exercise science problems. The present study added a group of faculty (experts) who were presented with the same simulation protocol as the other subjects. Protocol analysis and the Pitt coding system were used to analyse verbal data. Group differences were examined statistically. The faculty were superior in interpreting data and used the Basic Heuristic and Pattern Extraction strategies for the generation and use of algorithms. The problem-solving strategies varied for each group based on the perceived difficulty of the problem, the knowledge base available, and the similarity of the given problem to previous problems.     

Beyond Amplification: Using the computer to Reorganize Mental Functioning

Computers are classically viewed as amplifiers of cognition. An alternative conceptualization is offered of computer as reorganizer of mental functioning. Software analyses illuminate the advantages of the latter approach for new visions of the potential cognitive benefits of computers. A new result emerges: Because the cognitive technologies we invent serve as instruments of cultural redefinition (shaping who we are by changing, not just amplifying, what we do), defining educational values becomes a foreground issue. The demands of an information society make an explicit emphasis on general cognitive skills a priority. The urgency of updating education's goals and methods recommends an activist research paradigm: to simultaneously create and study changes in processes and outcomes of human learning with new cognitive and educational tools.     

小学数学课堂对话的特点:对专家教师与非专家教师的比较

Using classroom observation and video recording methods, we performed a comparative study on the forms and content of dialogues in the classrooms between expert and novice teachers. Of the 55 lessons surveyed, it was found that expert teachers tend to use analytical and comparative questions more frequently to detect students’ mathematical reasoning. Students and teachers work together to determine the answer to a question and the dialogue in the classroom takes place in a way that students present an answer, the teacher and the other students question the answer, and then the students explain the answer. On the other hand, a novice teacher often tends to give students hints, or utilize simple questions to jog the memory. The novice teacher recognizes students’ logic but does not incorporate them into his/her teaching. In this case, the teacher becomes the sole judge for the appropriateness of the answers and the typical dialogue in the classroom occurs in a way that the teacher asks a question, students answer, and the teacher comments.     

Spelling error interpretation: beyond the phonetic/dysphonetic dichotomy

If spelling errors are classified simply as auditory or visual, or as phonetically accurate or inaccurate, manifestations of both developmental phenomena and possible linguistic process deficits in spelling may be overlooked or misinterpreted. Phonological process deficits in spelling are more complex than simple phonetic ratings will reflect. Spelling errors may yield useful information about specific language disabilities if linguistically informed criteria for analysis are employed.     

Beyond discovery: a case study of teacher interaction,young children and computer tasks

The integration of computer technologies into everyday classroom life continues to provide pedagogical challenges for school systems, teachers and administrators. Data from an exploratory case study of one teacher and a multiage class of children in the first years of schooling in Australia show that when young children are using computers for set tasks in small groups, they require ongoing support from teachers, and to engage in peer interactions that are meaningful and productive. Classroom organization and the nature of teacher–child talk are key factors in engaging children in set tasks and producing desirable learning and teaching outcomes.     

Making sense of genetics: Students' knowledge use during problem solving in a high school genetics class

Interest in including ideas about the nature of science in instruction and research has led to the realization that, in addition to developing courses which offer students experience with science practice, it is important to understand the ways in which students learn and use science knowledge within such courses. The study reported here is based on a particular view of the nature of scientific practice: Science is collaborative; scientists use knowledge in the construction of new knowledge; and scientists' understanding of problems and problem-solving strategies change during knowledge construction. Given this perspective, the study examines the ways in which students in an innovative high school genetics class collaborate to construct knowledge as they develop genetics models. In this classroom, students use three kinds of knowledge: knowledge of genetics, permitting them to recognize anomalous aspects of new data and providing a template from which to develop new models; knowledge of the process of model revision, helping them make decisions about how to develop new models; and knowledge of their own problem-solving strategies, allowing them to “keep track” of what they have done, as well as make connections between the development of new models and their knowledge of genetics. © 1996 John Wiley & Sons, Inc.     

Moving beyond the teacher-centred/learner-centred dichotomy: implementing a structured model of active learning in the Maldives

In efforts to improve the quality of education, the disparity between policy and practice in implementing learner-centred pedagogy has been well-documented. Acknowledging these challenges, this study investigated active learning reform using design-based research, an interventionist methodology in the Maldives. The intervention specifically sought to address the policy-practice gap through the development of a structured model of active learning, drawing on recommendations in the literature and moving beyond the simple dichotomy of teacher-centred versus learned-centred pedagogy. Teachers’ enactment of the model was studied within a Maldivian island school. The data identified enabling conditions in teachers’ use of the intervention: the pedagogical model needs to be clearly and simply articulated; promote a staggered approach to reform; and reflect and respect local priorities. These were converted into design principles – an outcome of design-based research intended to inform the work of others enacting similar reforms.     

Beyond the dichotomy of teacher- versus student-focused education: A survey study on physics teachers' beliefs about the goals and pedagogy of physics education

This study explored the content and structure of physics teachers' beliefs on teaching and learning in general in relation to their domain-specific beliefs. A questionnaire was administered to secondary school teachers in physics (N = 126) in the Netherlands. The results showed that beliefs about the general and domain-specific goals of physics education formed an interrelated belief system consisting of content-oriented and student-oriented beliefs. Moreover, teachers agreed with the importance of both teacher-regulated and student-regulated learning. Therefore, research on teachers' beliefs should go beyond the often used dichotomy between ‘teacher-focused’ versus ‘student-focused’ education by focusing on the rationale behind ‘appropriate’ teaching behavior.     

Exploratory learning with a computer simulation for control theory: Learning processes and instructional support

Computer simulations create a context that is well fitted for exploratory or discovery learning. The aim of the present two studies was to gain deeper insight into what constitutes exploratory learning and to assess the effects of a number of instructional support measures. The domain involved was control theory at the university level. In the first study we made an inventory of exploratory learning processes by observing 17 students working with a computer simulation and analyzing students' thinking-aloud protocols. Subjects received a structured assignment with hints as an instructional support measure. In the second study, 91 students received an open-ended assignment with instructional support that consisted of an information sheet and a set of fill-in forms. On both sheets and forms, six cells were presented. A cell was given for each of the following six learning processes: identifying variables and parameters, generating hypotheses, designing an experiment, predicting, interpreting data, and drawing of conclusions. Information sheets were either of a domain specific or of a general nature. The set of fill-in forms were either free or had the cell HYPOTHESIS already filled in. The statements of the students on the fill-in forms were analyzed in a stepwise order. Twenty-two detailed learning processes were identified and classified. Two of the main classes of processes are transformative and regulative. Both studies showed that students were reluctant to apply learning processes that are considered characteristic for exploratory learning. Furthermore, students had problems with the exploratory learning processes, especially with the processes of generating hypotheses, interpreting data, and drawing conclusions. Effects of the instructional support measures were not conclusive. Hints did not result in significant improvements of the study process. Supporting learning processes with information sheets appeared to help students in performing learning processes, but no different effects of domain specific and general information could be found. Students who were provided with hypotheses showed a higher global activity level and higher scores in domain correctness of their learning processes.     

Exploring the dyad: the relationship establishment between a novice physical education teacher and his mentor

The retention of new teachers is a noteworthy issue among physical education teachers. One way to combat attrition is with the implementation of induction programs that have a strong emphasis on mentoring. Mentoring creates a growth-in-connection for the novice physical education teacher as well as the mentor. The relational cultural theory (RCT) develops relationships based in situational boundaries between the mentor and the mentee. RCT explores the nature of human development based on the individuals involved in these relationships. The purpose of the study was to explore the perception of the relationship between a novice physical education teacher and his mentor and to determine if the mentoring relationship between the participants reflected the RCT model. Observations, interviews, and the researcher’s journal were used as a means for data collection. In this study, meaningful relationships occurred in the working relationship, as well as the personal relationship. It was indicated that when meaningful relationships are established, novice physical education teachers are more confident in their teaching abilities and are more likely stay in the profession.     

Beyond member-checking: a dialogic approach to the research interview

This article presents a dialogic qualitative interview design for a narrative study of six international UK university students' motivation for learning English. Based on the work of Mikhail Bakhtin, this design was developed in order to address the limitations of member-checking [Lincoln, Y. S., and E. G. Guba. 1985. Naturalistic Inquiry. Newbury Park, CA: Sage] as a means by which participants' responses to data and interpretation might be gathered. Through a personalized reflection on my design and consideration of attitudes to member-checking, I demonstrate that a more explicit co-constructedness is evident in both the design and the data generated, and I offer this design as a more collaborative, more ethical alternative to member-checking in particular, and as an approach to qualitative research interviews in general.     

近体诗校读中的“依律辨误”——以河西方志著录艺文为例

地方史志中收录的历代艺文,因各种原因,在文字上多有讹误。其中的近体诗,因属依律而作,所以我们在编辑校阅过程中,可以依据基本的格律知识来发现其中的错谬。现以河西方志为主,举例分析近体诗校读中的"依律辨误"问题。     

Beyond the Hispanic/Latina/o Label: Counseling Students from Four Representative Nations

Clinicians working with students of Hispanic/Latina/o background may tend to categorize these students as Hispanic/Latino/a regardless of their or their ancestors’ country of origin. This article challenges the wisdom of using such broad terminology, because it masks considerable differences among Hispanic/Latina/o students, and proposes instead developing a more detailed knowledge about these students based on national differences. Due to space limitations, I will focus on four nationalities I am most familiar with: Chilean, Costa Rican, Mexican, and Spanish.     

Learning to make change happen in Chinese schools: adapting a problem-based computer simulation for developing school leaders

School leader training has become a critical strategy in educational reform. However, in China, there still exists a big gap in terms of how to transfer leadership knowledge into practice. Thus, tools that can integrate formal knowledge into practice are called for urgently in school leader training. This paper presents the results of a research and development (R&;D) approach to adapt an existing online computer simulation, Making Change Happen?, for use in Mainland China. The paper describes the process used to inform and assess our cultural adaptation of the simulation, as well as the response of Chinese principals to learning through this innovative method. Results affirmed the necessity for cultural adaptation of ‘Western’ curricula and tools for use in the Chinese context. The positive response of the Chinese school principals to learning via an online computer simulation suggested future potential for employing technology-facilitated, active learning modes in China. Implications are outlined for theory, research, and practice.