Metaphorical graphics aid learning and memory

The present investigation was designed to determine the effects of metaphorical graphics on learning from an expository text. The graphics were designed to function as metaphorical representations of the semantic elements inherent in the passage, with the level of correspondence between the graphics and text varied as weak or strong. In study 1, participants (N = 168) were randomly assigned to one of three graphic/text conditions (strong, weak, or none). Learning was measured immediately after the presentation of learning materials and again a week later. In study 2, participants (N = 98) followed the same procedure as study 1, but they were allowed to view the experimental materials online, rather than in a lab setting. Results from both studies revealed that, while decorative graphics may appear benign or detrimental to learning outcomes immediately after exposure under experimental lab conditions, further analysis indicated that graphics designed to metaphorically correspond to text content functioned to preserve learning across a one-week delay. In addition, when participants viewed the materials online, the decorative graphics improved learning, not just prevented decay. The online effect was mediated by the level of metaphorical correspondence between the passage and the graphic.     

Weaving the 'Seamless Web': Why higher education and further education need to 'merge' if lifelong learning is to become a reality

This paper offers evidence that universities need to create ever greater links with further education if lifelong learning is ever to become a reality. Adult learners and potential adult learners are intimidated by the mystique of the 'university' (in its cultural metaphorical sense) but would be more inclined to return to learning if the said learning could take place in the more 'friendly' confines of a further education college. Thus the trend of FE colleges offering 'higher' education courses with validation by universities is one which should be encouraged and pursued to an even greater extent than it already is.     

Learning Processes in Chemistry: Drawing Upon Cognitive Resources to Learn About the Particulate Structure of Matter

This article explores 11- to 16-year-old students' explanations for phenomena commonly studied in school chemistry from an inclusive cognitive resources or knowledge-in-pieces perspective that considers that student utterances may reflect the activation of knowledge elements at a range of levels of explicitness. We report 5 themes in student explanations that we consider to derive from implicit knowledge elements activated in cognition. Student thinking in chemistry has commonly been examined from a misconceptions or alternative conceptions/frameworks perspective, in which the focus has been on the status of learners' explicit conceptions. This approach has been valuable, but it fails to explain the origins or nature of the full range of alternative ideas reported. In physics education, the cognitive resources perspective has led to work to characterize implicit knowledge elements—described as phenomenological primitives (p-prims)—that provide learners with an intuitive sense of mechanism. School chemistry offers a complementary knowledge domain because of its focus on the nature of materials and its domination by theoretical models that explain observable phenomena in terms of emergent properties of complex ensembles of “quanticles” (molecules, ions, electrons, atoms, etc.) The themes reported in this study suggest a need to recognize primitive knowledge elements beyond those reported from physics education and suggest that some previously characterized p-prims may be better considered to derive from more broadly applicable intuitive knowledge elements.     

Factors Influencing Zoo Visitors' Conservation Attitudes and Behavior

Abstract

The author predicted that Zoo Atlanta visitors who had interactive experience with the zoo's elephant demonstration and bio-fact program would be more likely to actively support elephant conservation than those who simply viewed the animals in their exhibit and read graphics. The survey instruments used in this research consisted of 25 closed-ended questions, petitions, and conservation-action solicitation cards. A random sample of 471 zoo visitors was selected, and 350 individuals completed the survey, signed petitions, and took solicitation cards. The overall return rate of the solicitation cards was 18.3%; the return rate was higher for visitors who had higher levels of interaction with the elephant exhibit. The return rates by experience were highest—29.7%, high—20.3%, undetermined—14.8%, low—14.3%, and lowest—11.6%. For the five categories of experience, the distribution of return rates was not random, χ²(4,N = 64) = 9.88, p < .04.     

Parental Participation: Essential Partners in Guidance

The relationship between parents and schools has in recent years been a controversial and contradictory one. Here Barrie Irving discusses one dimension that impinges on this relationship—vocational guidance—and how interactions between teachers and parents could be made more productive, particularly from the perspective of parents. Having suggested that often the interchange of information and ideas is limited by the attitudes and perceived interests of both schools and parents, Irving goes on to focus on a particular issue, the fact that although parents are given information about their children, they are rarely if ever given the means to develop on this.     

Towards a Culture‐based Approach to Chemical Education in Secondary Schools: The Role of Chemical Formulae in the Teaching of Chemistry

Summaries

English

The didactic use of formulae in the teaching of chemistry as part of the individual culture should include the logics of their elaboration, and frame them into the basic postulates of the chemical doctrine.

These postulates, in the form that was accepted since the last quarter of the 19th century, are discussed together with the assumptions embodied in the procedures for establishing the formulae as the source of the images of molecular structure. The limitations inherent in these procedures, and the influence they had upon the teaching of chemistry, are examined by analysing the exemplar cases of anthracene and of sydnones. Chemical formulae represent a practical code for the structure‐reactivity relationships, and therefore their current meaning in a quantum‐chemical interpretation is also discussed.

It is suggested that the teaching of chemistry in the age range 13‐14 be based on the postulates and procedures of classical chemistry (1874‐1935), leaving the elementary introduction of quantum‐chemical concepts to the 15‐18 age range.     

Medical student retention of embryonic development: Impact of the dimensions added by multimedia tutorials

The purpose of this project was to develop Web‐based learning modules that combine (1) animated 3D graphics; (2) 3D models that a student can manipulate independently; (3) passage of time in embryonic development; and (4) animated 2D graphics, including 2D cross‐sections that represent different “slices” of the embryo, and animate in parallel. These elements were presented in two tutorials, one depicting embryonic folding and the other showing development of the nervous system after neural tube formation. The goal was to enhance the traditional teaching format—lecture combined with printed diagrams, text, and existing computer animations—with customized, guided, Web‐based learning modules that surpassed existing resources. To assess module effectiveness, we compared quiz performance of control groups who attended lecture and did not use a supporting module, with study groups who used a module in addition to attending lecture. We also assessed our students' long‐term retention of the material, comparing classes who had used the module with students from a previous year that had not seen the module. Our data analysis suggests that students who used a module performed better than those given only traditional resources if they used the module after they were already somewhat familiar with the material. The findings suggest that our modules—and possibly computer‐assisted‐instruction modules in general—are more useful if used toward the later stages of learning, rather than as an initial resource. Furthermore, our data suggest that the animation aids in long‐term retention. Both medical students at the University of Cincinnati and medical faculty from across the country commented favorably on their experiences with the embryonic development modules. Anat Sci Ed 1:252–257, 2008. © 2008 American Association of Anatomists.     

Translation of representations of the structure of matter and its relationship to reasoning,gender, spatial reasoning,and specific prior knowledge

The purpose of this study was to characterize high school chemistry students' ability to make translations between three representations of the structure of matter, and to determine the degree to which the students' ability to make these translations is related to reasoning ability, spatial reasoning ability, gender, and specific knowledge of the representations. Translation between formula, electron configuration, and ball-and-stick model representations of matter were chosen for study because of their promise for adding to knowledge of students' conceptual ecology, and because they may be of practical use for teaching and evaluation in chemistry classrooms. Representations have the characteristic that they embed selected details of the relevant concept or principle, but permit other details to fade. As one example, the chemical formula for water, H₂O, explicitly conveys the identity of the constituent elements and their ratio, but does not explicitly convey the bond angle or whether the bonds are single or double. On the other hand, the ball-and-stick model of water explicitly conveys the bond angle and bond orders, but does not emphasize the ratio of the elements. Translation between representations is an information processing task, requiring understanding of the underlying concept to the extent that the individual can interpret the information provided by the initial representation and infer the details required to construct the target representation. In this study, the use of the translations of representations as an indicator of understanding of chemical concepts is developed in terms of (a) its relationship to four variables associated with achievement in chemistry, (b) specific representation error types, and (c) its utility in revealing details of students' conceptions and concept formation. Translation of representation performance was measured by administering, audio recording, transcribing, and scoring individual, task-based, think-aloud interviews. The associated interview schedule was entitled Translation of Representations—Structure of Matter [TORSOM]. Reasoning ability was measured by the Group Assessment of Logical Thinking—short form (GALT-s), spatial reasoning ability by the spatial reasoning subtest of the Differential Abilities Test (SRDAT), and prior knowledge of the representations by a test developed by the first researcher (Knowledge of Representations—Structure of Matter). When each of the hypothetical correlates were regressed on TORSOM individually, results indicated the KORSOM and GALT-s but not gender or SRDAT were statistically significant (alpha = .05). The two-predictor model accounts for 28% of the variance in the TORSOM scores. Representation error types are described and exemplified.     

Using Gestalt theory to teach document design and graphics

Gestalt psychology principles of figure‐ground segregation, symmetry, closure, proximity, good continuation, and similarity provide a simple yet powerful analytic vocabulary for discussing page layout and graphics. The six principles apply readily to typography, white space, data tables and maps, the relation between graphics and text, and other facets of textual design. The principles explain many difficulties that readers have in processing texts and graphics, and they explain why well‐designed pages and graphics are effective.     

Chemistry for whom? Gender awareness in teaching and learning chemistry

Marie Ståhl and Anita Hussénius have defined what discourses dominate national tests in chemistry for Grade 9 in Sweden by using feminist, critical didactic perspectives. This response seeks to expand the results in Ståhl and Hussénius’s article Chemistry inside an epistemological community box!—Discursive exclusions and inclusions in the Swedish national tests in chemistry, by using different facets of gender awareness. The first facet—Gender awareness in relations to the test designers’ own conceptions—highlighted how the gender order where women are subordinated men becomes visible in the national tests as a consequence of the test designers internalized conceptions. The second facet—Gender awareness in relation to chemistry—discussed the hierarchy between discourses within chemistry. The third facet—Gender awareness in relation to students—problematized chemistry in relation to the students’ identity formation. In summary, I suggest that the different discourses can open up new ways to interpret chemistry and perhaps dismantle the hegemonic chemistry discourse.     

A jigsaw cooperative learning application in elementary science and technology lessons: physical and chemical changes

Cooperative learning is an active learning approach in which students work together in small groups to complete an assigned task. Students commonly find the subject of ‘physical and chemical changes’ difficult and abstract, and thus they generally have many misconceptions about it.

Purpose

This study aimed to investigate the effects of jigsaw cooperative learning activities developed by the researchers on sixth grade students’ understanding of physical and chemical changes.

Sample

Participants in the study were 61 sixth grade students in a public elementary school in Izmir, Turkey.

Design and methods

A pre-test and post-test experimental design with a control group was used, and students were randomly assigned to the experimental and control groups. Instruction of the subject was conducted via jigsaw cooperative learning in the experimental group and via teacher-centered instruction in the control group. During the jigsaw process, experimental group students studied the subjects of changes of state, changes in shape and molecular solubility from physical changes, and acid–base reactions, combustion reactions and changes depending on heating from chemical changes in their jigsaw groups.

Results

The concept test results showed that jigsaw cooperative learning instruction yielded significantly better acquisition of scientific concepts related to physical and chemical changes, compared to traditional learning. Students in the experimental group had a lower proportion of misconceptions than those in the control group, and some misconceptions in the control group were identified for the first time in this study.

Conclusions

Jigsaw cooperative learning is an effective teaching technique for challenging sixth grade students’ misconceptions in the context of physical and chemical changes, and enhancing their motivation, learning achievements, self-confidence and willingness in the science and technology lesson. This technique could be applied to other chemistry subjects and other grade levels.     

James Baldwin’s ‘Everybody’s Protest Novel’: Educating our responses to racism

Abstract

The aim of this article is to establish—and explore—James Baldwin’s significance for educational theory. Through a close reading of ‘Everybody’s Protest Novel’, I show that Baldwin’s thinking is an important (if unrecognized) precursor to the work of Stanley Cavell and Cora Diamond, and is relevant to a number of problems that are educationally significant, in particular problems of race and racism.     

Adolescents' and adults' skills to visually communicate knowledge with graphics

Abstract

A study is reported that explored adolescents' and adults' abilities to comprehend and create visual displays (realistic pictures, graphics, diagrams) as effective means of communicating information. The comprehension abilities of our subjects were analysed through a test which included questions on six examples of different kinds of visual displays. Their production abilities were studied by examining the visual displays that the subjects spontaneously created on the content of a given text. An improvement with age was found in their comprehension abilities: older subjects performed better than younger ones in extracting more elaborated information from graphics. On the contrary, no remarkable improvement with age could be found in their production abilities. Subjects of all instructional groups showed difficulties in following conventional rules of representation with graphics and in using graphical features (colour, size, grid) to communicate information visually. The conclusion is drawn that instructional measures for improving subjects' visual literacy at different educational stages are needed.     

The Multidimensional Audioconferencing Classification System (MACS)

Abstract

Increasing awareness and emphasis on interactional aspects of distance education is accompanied by growing interest in describing the actual process of audioconferencing instruction. Drawing on three theoretical and empirical streams—systematic small group interaction analysis, systematic classroom interaction analysis, and interaction in distance education settings—the schema presented here offers an approach to classify and analyze the elements accounted for by the contextual structure in audioconferencing instruction.     

Children's understanding of substances,Part 2: Explaining chemical change

This is the second part of a paper which focuses on the idea of chemical change (see Johnson 2000). The reported data comes from a study which explored the development of children's concept of a substance (ages 11-14). It examines the use of the ideas of elements, compounds and the bonding between atoms to explain chemical change and the intersection of these ideas with 'basic' particle ideas. Evidence is presented which suggests that the particle ideas were the means by which the pupils came to acknowledge the phenomenon of chemical change, having been unmoved by a macroscopic approach which identified substances by melting and boiling point. Furthermore, a basic particle model in which individual particles still retained the macroscopic properties of the substance was found to inhibit an understanding of chemical change. Findings with respect to a burning candle are reported in a separate section. Important implications for teaching are discussed.     

Classroom Transactions of Student‐Teachers of Science

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.     

Effectiveness of case-based learning instruction on pre-service teachers’ chemistry motivation and attitudes toward chemistry

Background: The development of primary pre-service teachers’ chemistry motivation and attitudes toward chemistry were examined in order to develop their science literacy using case-based learning. Students’ ideas were emphasized, real-life situations were discussed, and students could share their ideas and knowledge with peers; as a result, students were active in the learning process.

Purpose: The purpose of the study was to investigate the effectiveness of using case-based learning instruction to increase pre-service primary teachers’ chemistry motivation and improve their attitudes toward chemistry as a school subject.

Sample: The subjects of this study consisted of 51 (20 female, 31 male) freshman primary pre-service teachers from an urban university in Turkey. The mean age of the primary pre-service teachers was 21.

Design and methods: One group pre-test and post-test design was used. A chemistry motivation questionnaire and chemistry attitude scale were used for data collection. For the data analysis, two-way repeated measures of ANOVA and repeated measures MANOVA were conducted.

Results: The results indicated that the mean of the attitude score after the treatment was significantly greater than the mean of the attitude before the treatment. The results also demonstrated that there is no significant difference between females and males. According to the results of the study, there is no significant difference between primary pre-service teachers’ chemistry motivation. However, some chemistry motivation constructs mean scores are greater after the treatment.

Conclusions: In sum, it could be stated that case-based learning is helpful for the development of students’ chemistry motivation and attitudes toward chemistry.     

Among Those Present

Abstract

The theory of expectancy which provides a clear path to a desired goal was applied through the delivery system of contract grading in order to determine if business student motivation and effort could be increased. Experiments were conducted during the 1974-75 school year using nine classes of college students with 280 total participants. Seven classes experienced contract grading and two experienced traditional grading methods. Results showed that student effort increased significantly using the contract grading method.     

Investigating the relationships among students’ self-efficacy beliefs,their perceptions of classroom learning environment,gender, and chemistry achievement through structural equation modeling

Background: Investigating factors contributing to chemistry achievement is important since it enables us to make more concrete instructional decisions related to improving students? chemistry achievement.

Purpose: This study aimed to investigate how students? perceptions of learning environment, self-efficacy and gender are related to chemistry achievement.

Sample: Three hundred fifty six high school students with the age range of 14 and 19 from three different schools in the same district were the participants.

Design and methods: A structural equation model was designed and tested. Constructivist learning environment survey, self-efficacy scale were the instruments of the study. Information about students? gender and their chemistry grades belonging to the previous semester were also collected.

Results: The model testing showed that chemistry self-efficacy beliefs, students? perceptions of constructivist learning environment (through chemistry-self efficacy) and gender were significantly related to chemistry achievement. Moreover, the findings showed that students? chemistry self-efficacy beliefs mediated the relation of students? learning environment perceptions to their chemistry achievement.

Conclusions: The present study has some educational implications for teachers, teacher educators and curriculum developers. First of all, self-efficacy was found to have an effect on students? achievement. Therefore, teachers should consider students? self-efficacy beliefs and devise their instruction accordingly. Another implication of this study is the necessity of considering gender differences in designing teachers? instruction.