Problems in Picturing Text: A Study of Visua/Verbal Problem Solving

In this study, experts from three different disciplines gave think aloud protocols as they revised mismatched text/illustration combinations from biology textbooks. Fourteen first-year college biology students also gave protocols as they read and interpreted the combinations. The study was designed to explore the problem solving strategies of the experts as they revised the combinations of visual and verbal information. The results of this study indicate that, despite differences, the experts from the different disciplines worked in similar ways. Nevertheless, many of the experts were not able to predict the misinterpretations that students had of the combinations. The results indicate that one of the sources of problems in text/illustration combinations in textbooks may be due to a lack of consensus among expert authors as well as to a lack of direct feedback from readers. The results suggest that practical changes in publishing practices may be useful.     

The importance of images in astronomy education

The abundance of images concerning textbooks doesn't always facilitate the understanding of the concepts. In this study, the phases of the moon, the images shown in Primary and Secondary textbooks, the relationships between the written theoretical content and its illustration, as well as the problems of comprehension of some images, are studied. We worked with 78 students in the third year of a university teacher-training course. The images used to illustrate the phases of the moon are not, by themselves, sufficiently explanatory . Students haven't a clear idea of the Sun/Earth/Moon model and they lack some concepts with which to build it. They have also difficulty in expressing themselves in diagrams. Very strong inducements to attract attention are required in the written text, as well as specific instructions on the part of the teacher, if learning is to take place.     

Conceptual Variation or Incoherence? Textbook Discourse on Genes in Six Countries

The aim of this paper is to investigate in a systematic and comparative way previous results of independent studies on the treatment of genes and gene function in high school textbooks from six different countries. We analyze how the conceptual variation within the scientific domain of Genetics regarding gene function models and gene concepts is transformed via the didactic transposition into school science textbooks. The results indicate that a common textbook discourse on genes and their function exist in textbooks from the different countries. The structure of science as represented by conceptual variation and the use of multiple models was present in all the textbooks. However, the existence of conceptual variation and multiple models is implicit in these textbooks, i.e., the phenomenon of conceptual variation and multiple models are not addressed explicitly, nor its consequences and, thus, it ends up introducing conceptual incoherence about the gene concept and its function within the textbooks. We conclude that within the found textbook-discourse ontological aspects of the academic disciplines of genetics and molecular biology were retained, but without their epistemological underpinnings; these are lost in the didactic transposition. These results are of interest since students might have problems reconstructing the correct scientific understanding from the transformed school science knowledge as depicted within the high school textbooks. Implications for textbook writing as well as teaching are discussed in the paper.     

Prevalence,function, and structure of photographs in high school biology textbooks

Photographs are a major aspect of high school science textbooks, which dominate classroom approaches to teaching and learning. It is thus surprising that the function of photographs and their relation to captions and texts have not been the topic of analysis. The purpose of this study was to investigate the prevalence, function, and structure of photographs in high school science. Our motivating research question was, “What can students learn from textbooks when they study photographs?” To answer this and several subordinate questions, we selected and analyzed four Brazilian biology textbooks. We focus on the use of photographs and the relation among them, various types of texts, and the subject matter presented. Our analysis reveals that the structural elements of text, caption, and photographs and the relations among them differ across the textbooks and at times even within the same book. This, of course, will influence readers' interpretations of the photographs changing their role in the text. The results of our study have implications for textbook authors and textbook readers. We suggest that future studies may focus on students' and teachers' interpretation of photographs in real time. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 1089–1114, 2003     

Upper Secondary Students’ Understanding of the Use of Multiple Models in Biology Textbooks—The Importance of Conceptual Variation and Incommensurability

In this study we investigate students’ ability to discern conceptual variation and the use of multiple models in genetics when reading content-specific excerpts from biology textbooks. Using the history and philosophy of science as our reference, we were able to develop a research instrument allowing students themselves to investigate the occurrence of multiple models and conceptual variation in Swedish upper secondary textbooks. Two excerpts using different models of gene function were selected from authentic textbooks. Students were given the same questionnaire-instrument after reading the two texts, and the results were compared. In this way the students themselves made a classification of the texts which could then be compared with the researchers’ classification of the texts. Forty-one upper secondary students aged 18–19 participated in the study. Nine of the students also participated in semi-structured interviews. Students recognized the existence of multiple models in a general way, but had difficulty discerning the different models and the conceptual variation that occurs between them in the texts. Further they did not recognize the occurrence of incommensurability between multiple models. Students had difficulty in transforming their general knowledge of multiple models into an understanding of content specific models of gene function in the textbooks. These findings may have implications for students’ understanding of conceptual knowledge because research has established textbooks as one of the most influential aspects in the planning and execution of biology lessons, and teachers commonly assign reading passages to their students without further explanation.     

What high school biology teachers say about their textbook use: A descriptive study

This article reports the findings from a study that examined how high school biology teachers describe their instructional use of reading and textbooks. In the study, both quantitative and qualitative data were collected—by self-report mail questionnaire and personal interview, respectively. Eighty percent of 184 sampled teachers responded to the questionnaire, and, of these, a subsample of 16 teachers—selected to be broadly representative of the questionnaire sample—were interviewed subsequently with their instructional materials present to increase recall. We found that biology teachers modified their use of textbooks according to the academic level of the biology class that they taught. In lower academic level classes, teachers provided students with many reading activities but expected them to learn biology content in class. In higher academic level classes, teachers expected students to learn from both independent reading and classroom instruction. Biology teachers viewed both reading and inquiry activities as important to learning biology, but they appeared unsure of how to incorporate reading comprehension strategies into their science instruction.     

A Typology of Undergraduate Textbook Definitions of ‘Heat’ across Science Disciplines

The physics and chemistry education literature has grappled with an appropriate definition for the concept of heat for the past four decades. Most of the literature promotes the view that heat is ‘energy in transit’ or ‘involves the transfer of energy’ between the system and surroundings because of a difference in temperature. Given that many undergraduate students are not learning the concept of heat in physics and chemistry alone, the goal of this investigation is to explore the conceptions of heat as presented in textbooks from across the science disciplines. An analysis of the definitions of heat from physics, chemistry, the biological sciences and the earth sciences showed a significant variation in the definitions within a discipline and between the disciplines. Specifically, the physics and chemistry textbooks used ‘energy in transit’ or ‘transfer of energy’ definitions (Class I), whereas textbooks from other disciplines typically used definitions which relate heat to ‘molecular kinetic energy’ (Class II) or they used a hybrid of Class I and II definitions. Although a universal definition of heat across disciplines may not be possible (or even desirable), we suggest that discrepancies in definitions be acknowledged and clearly communicated to students.     

Social issues in high school biology textbooks: 1963– 1983

Twenty-two high school biology textbooks published between 1963 and 1983 were analyzed for their treatment of social issues. Textbooks were selected from among those used most frequently by teachers and/or having the highest sales. The textbooks were read in random order and the amount of space, to the nearest tenth of a page, devoted to each social issue was expressed as a percentage of total length of text. The results showed that attention to social issues decreased between 1963 and 1983 in the textbooks studied. The implications of these results for biology education in the 1980s are discussed.     

Heat and Temperature: an analysis of how these concepts are dealt with in textbooks

Despite the fact that textbooks are primarily directed at students, research has shown that teachers are heavily reliant and dependent on them. On the other hand, there is some empirical evidence that textbook presentation of science content may lack accuracy and strengthen some alternative conceptions on their users. Besides, it seems that textbooks are not always in agreement with the results of educational research, namely in regard to teaching approaches. Thus, the main objective of this paper is to analyse how 9th grade Portuguese physics textbooks deal with heat and temperature, in order to see whether or not they are adequate sources of information for students and teachers. Eleven 9th grade textbooks are analysed with regard to ideas included, correctness of concepts and arguments, global teaching approach, learning activities (nature, diversity, level of investigation, etc.). The results indicate that the majority of the textbooks are hardly consistent with modem perspectives for science education.     

媒体融合视野下语文教科书革新的探索

纸质语文教科书知识呈现静态化、助学形同虚设和缺乏交互功能等弊端已经成为制约其发展的瓶颈,应运而生的新媒体技术肩负着教科书内容更新和载体换代的任务。纸墨书香与新媒体联姻,在刷新着课程内容和文化重构的同时改变着学习者的认知方式,形塑其价值观和精神风貌。语文教科书与新媒体融合经历了渗透媒体技术的纸质教科书、纸质教科书电子化、以电子阅读器或计算机存贮技术为载体的多媒体教科书和多功能集于一身的电子教科书等不同阶段,每次教科书的升级换代都离不开以纸质教科书为蓝本,因此新媒体与语文教科书融合还应该关注教科书内容如何与时俱进,在文本选择、插图设计、实践活动设置等方面凸显媒体文化。     

《格致须知》与中国近代新式教科书

1882年开始出版的《格致须知》是中国近代史上第一套由专设教科书机构专为学堂学生教学而编撰的新式教科书。这套教科书作为中国近代新式教科书的先导,按照西方近代学科门类分科设编,使得近代科学知识系统地成为学堂教学的主要内容。这套教科书没有以科学证明宗教,而是关注科学实验和方法、强调儿童的认知规律,对于学童认识和理解近代科学,成为新型知识分子奠定了基础作用。但其存在基本要素不全,科目难称齐全,内容也较为偏深等不足。     

Cognitive activities in complex science text and diagrams

Ainsworth’s (2006) DeFT framework posits that different representations may lead learners to use different strategies. We wanted to investigate whether students use different strategies, and more broadly, different cognitive activities in diagrams vs. in running text. In order to do so, we collected think-aloud protocol and other measures from 91 beginning biology majors reading an 8-page passage from their own textbook which included seven complex diagrams. We coded the protocols for a wide range of cognitive activities, including strategy use, inference, background knowledge, vocabulary, and word reading. Comparisons of verbalizations while reading running text vs. reading diagrams showed that high-level cognitive activities—inferences and high-level strategy use—were used a higher proportion of the time when comprehending diagrams compared to when reading text. However, in running text vs. diagrams participants used a wider range of different individual cognitive activities (e.g., more different types of inferences). Our results suggest that instructors might consider teaching students how to draw inferences in both text and diagrams. They also show an interesting paradox that warrants further research—students often skipped over or superficially skimmed diagrams, but when they did read the diagrams they engaged in more high-level cognitive activity.     

Tensions in the Biology Laboratory: What are they?

The purpose of this paper is to identify tensions in teacher–student interaction in a high school biology laboratory. Using micro‐analytic analysis of classroom talk, the interaction between the students and a teacher working in the biology laboratory session on Reproduction in Plants is studied. The two tensions highlighted here are tension with textbooks as authority and tension with the teacher as authority. Tension with textbooks as authority originates from an over‐reliance on generalizations expressed in textbooks resulting in the inability of learners to appreciate alternatives and exceptions. Tension with the teacher as authority stems from the task design and varying levels of control that a teacher has over the learner and the learning process. The genesis of the two forms of tensions in the laboratory is different and they are tackled differently by the participants to yield different outcomes. While science educators have conducted intensive research over the past two decades on the effects of school science laboratory work on students’ learning of science, more can be done in the specific area of teacher–student interaction. This paper offers some insights into the interaction between a teacher and her students in a laboratory as they learn biology. An increased understanding of the impact of the tensions in a science laboratory might help to bring about realization of the true spirit and intent of school science laboratory experiences.     

Queering high school biology textbooks

As teachers committed to educating all students, we need to learn more about how instructional materials shape representations of sexuality and gender. Through its insistent deconstruction of the norms that structure practice and belief, queer theory offers perspectives from which science educators can question assumptions embedded in textbooks. This article applies queer theory to analyze eight biology textbooks used in the United States. Specifically, we ask how biology textbooks address sexuality outside the heterosexual norm and if they propagate heteronormative attitudes. The textbooks examined offer deafening silences, antiseptic factoids, socially sanitized concepts, and politically correct binary‐gendered illustrations. In these textbooks, the term homosexuality was used only in the context of AIDS where, along with iv drug users, they were identified as an affected group. The pervasive acceptance of heteronormative behavior privileges students that fit the heterosexual norm, and oppresses through omission and silence those who do not. We offer implications for practice to help science educators broaden their perspectives on the constructs of sexuality and gender to construct new ways of knowing and understanding differences in science classrooms and the natural world. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 617–636, 2004     

Assessing functional effectiveness of pictorial representations used in text

Conclusion Recent literature concerning the use of illustrations in text has stressed the need for an assessment of the instructional function being served by the illustration. When an illustration is incorporated into textual matter, it should be serving a specific, pedagogically sound instructional function. Otherwise, the reader probably will not benefit from the illustration’s inclusion in the text; in fact, the reader might be distracted from the text by the illustration, with no cognitive gain being derived from this distraction. Therefore, to the traditional criteria for selection of illustrations used with text must be added the instructional function that is to be served. To determine whether an illustration will serve an intended instructional function effectively, a close examination of both the illustration’s attributes and its relationship to the text must be made. Research has shown that illustrations are composed of a variety of attributes pertaining to physical, instructional, and relational qualities of the illustrations, and that these attributes affect the way in which illustrations can be used as instructional tools. Therefore, the attributes present in an illustration will account in part for its effectiveness in serving an instructional function. The findings of this study suggest that illustrations possessing literal representation are more effective than illustrations possessing analogical representation when the instructional function to be served is identification of properties of phenomenal information, and that illustrations possessing analogical representation are more effective than illustrations possessing literal representation when the instructional function to be served is clarification of nonphenomenal information. Thus, this study is one of many needed to provide a comprehensive analysis of illustrations functioning as instructional supplements to text. Until a thorough understanding of the relationship between attributes and functions of illustrations is achieved, textbooks will in all probability continue to include illustrations which do not fulfill their instructional potential.     

Analysis of Five High School Biology Textbooks Used in the United States for Inclusion of the Nature of Science

Five high school biology textbooks were examined to determine the inclusion of four aspects of the nature of science: (a) science as a body of knowledge, (b) science as a way of investigating, (c) science as a way of thinking, and (d) science and its interactions with technology and society. The textbooks analyzed were BSCS Biology—A Human Approach (Kendall/Hunt), BSCS Biology—An Ecological Approach (Kendall/Hunt), Biology—The Dynamics of Life (Glencoe), Modern Biology (Holt), and Prentice Hall Biology (Prentice Hall). The same six chapters or sections were analyzed in each textbook, which were the methods of science, cells, heredity, DNA, evolution, and ecology. A scoring procedure was used that resulted, for the most part, in good intercoder agreement with Cohen’s kappa values ranging from 0.36–1.00. The five recently published biology textbooks in the United States have a better balance of presenting biology with respect to the four themes of science literacy used in this research than those analyzed 15 years ago, especially with regard to devoting more text to engaging students in finding out answers, gathering information, and learning how scientists go about their work. Therefore, these biology textbooks are incorporating national science education reform guides that recommend a more authentic view of the scientific enterprise than similar textbooks used 15 years ago.     

高职高专英语教材中词汇编排的特殊要求

高职高专英语教材中,教学词汇的选择、练习的编排有别于本科英语教材的价值判断和心理活动。目前高职高专英语教材在词汇编写方面没有充分考虑高职高专学生和本科学生英语词汇认知方面的差异,更缺乏对此类教材词汇编写的特殊性的认识。高职英语教材中词汇的编写应以心理语言学和语义学等理论为指导,以学生外语学习的心理认知规律为基础,在客观地对学生的词汇认知障碍进行评估后,再进行科学的词汇选取和编排。     

The effects of formative reading assessments closely linked to classroom texts on high school reading comprehension

Older student reading of informational texts like those found in most high school classrooms continue to be a concern. College entrance exams scores attest to the fact that this age group of readers remain largely unprepared for the rigorous, discipline area reading and comprehension demands of higher education. In response to this issue content area teachers have been encouraged to teach reading skills for their subject matter. Standard reading instruction tools have included reading guides and summative reading assessments. This study sought to compare the effects of standard reading pedagogy with computerized, formative reading assessments given to students as they read. The largest publisher of high school textbooks, Pearson Prentice-Hall, and the publisher of the high school government text used in this study currently does not have in place digital, formative reading assessments tracking section by chapter section. High school seniors in nine sections of American Government under two different instructors participated in this mixed method, quasiexperimental study. Results indicate a significant difference in content comprehension with the formative assessment pedagogy. Survey and questionnaire responses suggest students thought they read better and were more motivated to read responding to computerized formative assessments (CBA’s) that closely tracked their subject matter textbooks.