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1.
This study identified and quantified chemistry conceptions students use when solving chemical equilibrium problems requiring application of Le Chatelier's principle, and explored the feasibility of designing a paper and pencil test to accomplish these purposes. A 10‐item pencil and paper, two‐tier diagnostic instrument, the Test to Identify Student Conceptualizations (TISC), was developed and administered to 95 second‐semester university general chemistry students after they received regular course instruction concerning equilibrium in homogeneous aqueous, heterogeneous aqueous, and homogeneous gaseous systems. To validate TISC, nine students from a stratified random sample were selected for interviews incorporating comparable chemistry problems. The probability that TISC correctly identified an answer given by a student in the interview was p = .64, whereas the probability that TISC correctly identified a reason given by a student in the interview was p = .49. Eleven prevalent incorrect student conceptions about chemical equilibrium were identified by TISC. Students consistently selected correct answers more frequently (53% of the time) than they provided correct reasons (33% of the time). The level of association between student answers and their respective reasons on each TISC item was quantified using conditional probabilities calculated from logistic regression coefficients. The Kuder‐Richardson 20 reliability for TISC was .79. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 160–176, 2000 相似文献
2.
The aim of this article was to study the reasons, strategies, and procedures that both students and teachers use to solve some chemical equilibrium questions and problems. Inappropriate conceptions on teaching and a lack of knowledge regarding the limited usefulness of Le Chatelier's principle, with its vague and ambiguous formulation and textbook presentation, may be some of the sources of misconceptions about the prediction of the effect of changing conditions on chemical equilibrium. To diagnose misconceptions and their possible sources, a written test was developed and administered to 170 1st-year university chemistry students. A chemical equilibrium problem, relating to the students' test, was solved by 40 chemistry teachers. First, we ascertained that teacher's conceptions might influence the problem-solving strategies of the learner. Based on this first aspect, our discussion also concerns students' and teachers' misconceptions related to the Le Chatelier's principle. Misconceptions emerged through: (a) misapplication and misunderstanding of Le Chatelier's principle; (b) use of rote-learning recall and algorithmic procedures; (c) incorrect control of the variables involved; (d) limited use of the chemical equilibrium law; (e) a lack of mastery of chemical equilibrium principles and difficulty in transferring such principles to new situations. To avoid chemical equilibrium misconceptions, a specific pattern of conceptual and methodological change may be considered. 相似文献
3.
Ola O. B⊘ 《Scandinavian Journal of Educational Research》2013,57(4):129-153
Abstract B?, O. 1978. General or Specific Learning of Figure‐Ground Perception. Scandinavian Journal of Educational Research 22, 129‐153. Two training programs, one for auditory and one for visual figure‐ground perception, were constructed. The training effect for each program was tested in small groups of 8 pupils and the gain compared with a control group. The pupils were partly from an institution for brain damaged children and partly from an institution for mentally retarded. The effect measured was the pre‐test‐post‐test difference on tests for auditory and for visual figure‐ground perception. Both training groups showed higher gain score than the control group on both tests, but the effect was significant only for visual training on visual figure‐ground perception. 相似文献
4.
This study looks at the ideas which children have of the particulate model of matter, at the time they start formal science in school. Pupils aged about eleven in three European countries‐‐Greece, Portugal and the UK‐‐were studied using word association tests. In the UK and Portugal the children had received no teaching of the particulate model; in Greece the pupils had received one year of introductory science, containing some teaching of the particulate model. Key words associated with the particulate model were investigated as free associations. In Portugal and the UK there was little or no evidence of particulate ideas in the pupils’ responses. In the Greek data particulate ideas were more in evidence. There were other clear differences in the data from the three countries. Educational and research implications of the findings are discussed. 相似文献
5.
Dr. Johannes E.H. van Luit 《欧洲特需教育杂志》2013,28(4):237-246
Abstract Impulsivity is an important and co‐determining factor in the arising of learning difficulties. Impulsive children make many mistakes in arithmetic because of inattention and because they don't use the selfcontrol necessary to correct possible mistakes. In this investigation we examine whether a self‐instructional training program, applied in the teaching of arithmetic, has influences on the impulsivity (measured with help of the MFFT) of pupils who have a quick reaction time and who make many errors. The study involved 52 pupils selected from schools providing special education to children with learning disabilities and educable mentally retarded children. Sixteen of them could be categorized as impulsive children. The effectiveness of the training program is statistically investigated by means of t‐tests for correlated samples. The results show that training with a self‐instruction strategy can be effectively employed in teaching addition and substraction to educable mentally retarded and learning disabled children with arithmetic deficits. Besides, the impulsive children show after the training a more reflective cognitive style when compared to their cognitive style before the training was started. 相似文献
6.
Gellof Kanselaar 《Technology, Pedagogy and Education》2013,22(2):251-265
ABSTRACT The way computers are used in foreign language teaching reflects teachers' ideas about how foreign languages should be learned. We describe different methods of foreign language teaching, one of which is at the base of our computer program IT'S English. In this program, different types of exercises are implemented: receptive, reproductive, and productive. To implement our ideas of a communicative approach to teaching into a computer program, we built an intelligent tutoring system, which incorporates a dictionary, grammar rules, and the digitized pronunciation of words and sentences stored on a CD‐ROM. The software is flexible in that the learning environment it offers can shift from a teacher controlled setting to a fully learner controlled environment. Four groups of eight pupils used the program during eight weeks and were compared with students not using the program. The research showed that the students interacting with the software used its various components in an adequate and goal‐appropriate way and found the use of the software to be a positive experience. After the experimental period, knowledge of vocabulary was significantly higher for one of the computer‐using groups compared to its control group, although in the word (re)production tests no significant differences were found between the experimental and control groups. Implications of the results of the experiments for teacher education are discussed, with an emphasis on the importance of teachers learning how to assess the pedagogical approach of software and the didactic principles involved in its design and intended use. 相似文献
7.
Pre‐ and post‐word association and achievement tests were administered to relate concept growth with classroom learning. In the secondary school chemistry topic of reaction kinetics no conceptual differences were detected in the pre‐tests between high and low achievers in the achievement tests. In the post‐test the low achievers showed virtually no conceptual changes whereas the high achievers showed clearly relevant conceptual growth and structuring. The key concept collision integrated the concept structure of the high achievers, not appearing at all for the low achievers. The results show the potential of word association tests for use by teachers to follow the learning of concepts during science teaching. 相似文献
8.
Summaries English The report describes a study of the teaching behaviour of student‐teachers of science disciplines during the one‐term teaching practice of the English ‘Post‐Graduate Certificate in Education’ course, using the Science Teaching Observation Schedule by Eggleston et al. The results suggest that in several behavioural dimensions, students and teachers achieve a close match. These dimensions, it is suggested, could represent the ‘stable’ elements in the students’ perception of science teacher behaviour learnt during their time as pupils, or they might represent ‘safe’ transactions which do not involve students extensively in problems of classroom management and control. For other behaviour categories, it was found that students tended to behave less like experienced teachers as the training practice proceeded, but this was to some extent determined by the subject taught. Physics student‐teachers substantially maintained their similarity to experienced teachers, whilst chemistry and biology students drifted away. The nature of these drifts is discussed. 相似文献
9.
Brendan Bartram 《Educational research; a review for teachers and all concerned with progress in education》2013,55(2):211-221
Background The assumption that parents have some effect on their children's attitudes to learning is one that few educationalists would challenge. The ways in which this influence is brought to bear are a slightly more complex and contentious matter, however. Purpose The paper uses data from a tri-national PhD study on pupil attitudes to examine perceptions of the ways in which parents influence children's orientations towards foreign language learning (FLL). The comparative element is useful in providing a contrasting range of settings in which to examine the issue. The paper thus aims to provide some indication of the similarity and importance of particular influences by identifying features that seem significant, irrespective of setting. Sample A total of 411 learners of French, German and English (as foreign languages), represented in roughly equal numbers from across the ability range, took part in the survey. The pupils, aged 15 – 16, were drawn from two centrally located mixed comprehensive schools in each country—England, Germany and The Netherlands. The schools were similar in terms of size, social intake and their semi-urban location. Care was taken to ensure as close a gender balance as possible. Design and methods The study was designed as a qualitative survey and involved three data collection instruments. The first stage of data was collected using a written word association prompt distributed to the whole sample. The second stage involved around half the pupils generating written accounts of their attitudes and the factors they perceived to be influential. A total of 80 pupils took part in the final stage, consisting of 14 focus group interviews. A system of open coding was applied to all the data to support the process of inductive category building used in their analysis. Results The findings offer some evidence for an association between parental and pupil attitudes. Parental influence appears to operate in a number of ways, ranging from the role model potential of positive/negative behaviours and the communication of educational regrets, to the ways in which parents help to construct their children's understandings of language importance and status. The extent of parental language knowledge appears to be an important additional factor. Conclusions The evidence suggests that the ways in which parents contribute to the construction of their children's understanding of language utility are particularly important, and that this may be a key factor in the more positive attitudes demonstrated by the German pupils and the more negative orientations among the English participants. 相似文献
10.
David Moseley 《Journal of Research in Reading》2004,27(2):132-140
Parallel versions of a new multiple‐choice word‐recognition test were administered to 1019 and 590 Year‐1 pupils respectively. The test format was based on a published test of Word Recognition and Phonic Skills and was intended to provide reliable diagnostic information. It was found that internally consistent measures of three types of word recognition error could be derived (relating to consonants, vowels and phoneme omission), but that scales for letter order errors were unreliable. Information about the length of words which an individual can usually recognise, the proportion of high frequency to low frequency words recognised and the relative ease of recognising regular and irregular words were also considered as having possible implications for teaching. Of these measures, only word length was found to be a strong independent predictor of word recognition. Implications of these findings for the future development of norm‐referenced tests that at the same time provide objective feedback about individual strengths and weaknesses are discussed. 相似文献
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12.
This study concerns students’ ideas about the superposition of electric fields. Two paper‐and‐pencil questionnaires were given to university students to investigate possible obstacles to a correct use of this principle. The results confirm an expected difficulty about Gauss's theorem, i.e., the idea that only ‘internal’ charges create a field on a given closed surface. Another more surprising finding is that students are reluctant to admit that a field can penetrate into, or go out of, an insulator, particularly because ‘charges cannot move’. These first findings are discussed in connection with common features of students’ reasoning about mechanics and about multivariable problems. Some directions of future research are proposed. 相似文献
13.
ABSTRACT The purpose of this study was to describe and compare three word recognition abilities of reading disabled students. One hundred and fifty (150) reading disabled pupils, 75 elementary and 75 high school, were randomly selected to participate in this study. Correlated t‐test procedures were used to process the data. The dependent variables were the students’ analytical, phonics, and context analysis word recognition abilities as measured by the Wide Range Achievement Test, Stanford Diagnostic Reading Test, and 12 cloze passages. Results indicated that elementary and secondary reading disabled pupils have significant differences in their ability to use the three different word recognition abilities investigated. Implications for minimum competency testing in reading were discussed. 相似文献
14.
The authors' aim was to analyze the relationship of eye movements, auditory perception, and phonemic awareness with the reading process. The instruments used were the King-Devick Test (saccade eye movements), the PAF test (auditory perception), the PFC (phonemic awareness), the PROLEC-R (lexical process), the Canals reading speed test, and the ACL-1 (reading comprehension). The sample was composed of 52 first-year primary school pupils. After the correlational analysis, results indicate that all of these factors correlate in reading (lexical process, speed, and word comprehension). Moreover, the nonparametric Mann-Whitney U test reveals that children with saccade eye movements and auditory perception problems obtain lower reading levels. In addition, children with lexical problems obtain a lower level of phonemic awareness. Given the importance of these variables, the authors conclude with a proposal of neuropsychological activities to improve reading skills. 相似文献
15.
Lio Moscardini 《British Journal of Special Education》2010,37(3):130-138
This study by Lio Moscardini of the University of Strathclyde shows how a group of 24 children in three Scottish primary schools for pupils with moderate learning difficulties responded to word problems following their teachers' introduction to the principles of Cognitively Guided Instruction (CGI). CGI is a professional development programme in mathematics instruction based on constructivist principles developed at the University of Wisconsin‐Madison. The study found that the sample group of pupils were able to develop their understanding of mathematical concepts through actively engaging in word problems without prior explicit instruction and with minimal teacher adjustments. The pupils' conceptual understandings demonstrated by their solution strategies within CGI activities were generally not consistent with classroom records of assessment. The results were encouraging in illustrating the capacity of the sample group of pupils with moderate learning difficulties to reveal their mathematical thinking and considers the importance of this insight for instructional decision making. 相似文献
16.
《The Journal of educational research》2012,105(6):358-362
AbstractOverall mathematics achievement is declining nationwide. One of the main weaknesses of students appears to be their solution of word problems. In this study an interest inventory was administered to 99 fourth-grade students. The investigators developed a computer program to utilize the results of the interest inventory to personalize a pool of problems previously selected by a panel of experts. Subjects were administered tests with standard textbook problems and personalized problems. The analysis of the results indicated that personalization improved performance in the selection of the correct process but was of little or no benefit in the computation of correct answers, 相似文献
17.
John Head 《International Journal of Science Education》2013,35(3):295-300
Summaries English Although there has been an accumulation of evidence about the association of personality factors with a career in science, this work has hitherto lacked a cohesive theory. In this article it is suggested that an ego‐identity model, based on the work of Erikson, serves both as such a theory and also allows us to predict the effects of changes in school and curriculum on pupils’ reactions to science. 相似文献
18.
Adia J. Garrett Michle M. M. Mazzocco Linda Baker 《Learning disabilities research & practice》2006,21(2):77-88
Metacognition refers to knowledge about one's own cognition. The present study was designed to assess metacognitive skills that either precede or follow task engagement, rather than the processes that occur during a task. Specifically, we examined prediction and evaluation skills among children with (n= 17) or without (n= 179) mathematics learning disability (MLD), from grades 2 to 4. Children were asked to predict which of several math problems they could solve correctly; later, they were asked to solve those problems. They were asked to evaluate whether their solution to each of another set of problems was correct. Children's ability to evaluate their answers to math problems improved from grade 2 to grade 3, whereas there was no change over time in the children's ability to predict which problems they could solve correctly. Children with MLD were less accurate than children without MLD in evaluating both their correct and incorrect solutions, and they were less accurate at predicting which problems they could solve correctly. However, children with MLD were as accurate as their peers in correctly predicting that they could not solve specific math problems. The findings have implications for the usefulness of children's self‐review during mathematics problem solving. 相似文献
19.
《Pastoral Care in Education》2013,31(4):13-21
Experiential learning is often seen as a central component of social education and pastoral programmes such as peer mediation; but the precise nature of experience as an educational, social and pedagogic/cultural process in schools is complex. This paper uses the notion of experiential learning to explore the impact of a peer mediation programme in a transforming integrated school in Northern Ireland. The programme was intended to mainstream the involvement of pupils in the process of creating a more integrated school ethos and was implemented by youth workers working as members of the school staff. The paper begins with a review of the theoretical basis of experience as educational. This is followed by an interpretative review of the results of a survey of pupils' attitudes to peer mediation and semi-structured interviews with pupils and school and project staff about their perception of the impact of the programme on ideas of social learning. One issue is the extent to which developing pupils' capacity for interactive dialogue can be seen as an experiential process, like learning a foreign language – hence ‘peace talk’. Another is the process by which the perception of peer mediation training as ‘experiential’ constituted an enabling ‘pedagogic discourse’ which legitimized the programme for teachers and affirmed its beneficial impact on pupils. 相似文献
20.
The purpose of the study was to establish a relationship between the shift of meaning of the concept oxidation that has taken place during the historical development, and students' alternative concepts. First Examination Board papers were examined. The result enabled us to specify the research question. In the main part of the study, multiple‐choice items were given to 3074 senior high school students. They were asked to select the correct answer and to justify their choices. Additional illustrative material was collected in four interviews with senior high school students. The analysis of the data revealed the mechanism that some students used to interpret the reactions from NO3 ? to NO and from CO3 2? to CO2. Students' interpretations were based on the concept of a transfer of oxide ions. The mechanism explains some correct and incorrect answers to the problems. The interview study also revealed that students were reluctant to accept water as a Brønsted base. It is suggested to use students' alternative concepts about oxidation reactions in class, helping them to better understand the half‐reaction method. Students should also understand that the meaning of the concept oxidation has shifted in the course of time. In the area of acid‐base reactions, further research is needed. 相似文献