Visual Representations of DNA Replication: Middle Grades Students’ Perceptions and Interpretations

Visual representations play a critical role in the communication of science concepts for scientists and students alike. However, recent research suggests that novice students experience difficulty extracting relevant information from representations. This study examined students’ interpretations of visual representations of DNA replication. Each of the four steps of DNA replication included in the instructional presentation was represented as a text slide, a simple 2D graphic, and a rich 3D graphic. Participants were middle grade girls (n = 21) attending a summer math and science program. Students’ eye movements were measured as they viewed the representations. Participants were interviewed following instruction to assess their perceived salient features. Eye tracking fixation counts indicated that the same features (look zones) in the corresponding 2D and 3D graphics had different salience. The interviews revealed that students used different characteristics such as color, shape, and complexity to make sense of the graphics. The results of this study have implications for the design of instructional representations. Since many students have difficulty distinguishing between relevant and irrelevant information, cueing and directing student attention through the instructional representation could allow cognitive resources to be directed to the most relevant material.     

意义理论视野下的语文教学

胡塞尔意义理论阐明了意识活动与言语表达之间的关系。它把语言意义的内在意向性活动和外在的实现活动、语言意义的形式活动与具体内容等结合起来,具体说明了语言的形式和内容的意义统一。意向性意义理论对语文教学有一定的启示：分析文本,获得意义;把握文本意义的关键是学生的思维活动;有效激活学生生活经验以促进学生理解文本的意义;正确处理文本意义的确定性和不确定性的关系;整体把握与局部细读有机统一。     

“简练”注释疑义

《战国策·苏秦始将连横》中"简练"一词历来有不同的注解,或以为"练"即熟悉,或认为是练习;而"简练"或当作"湅"。其实,这些理解均值得商榷,该词从其组合关系看,应当为同义复合词,为"选择"之义。     

Lexical Quality and Reading Comprehension in Primary School Children

In a cross-sectional study, we examined the relationship between the quality of lexical representations and text comprehension skill in German primary school children (Grades 1–4). We measured the efficiency and accuracy of orthographical, phonological, and meaning representations by means of computerized tests. Text comprehension skill was assessed with a standardized reading test with questions requiring recognition of text information and inferencing. Both the accuracy of and the efficiency of access to the three types of lexical representations contributed to explaining interindividual variation in text comprehension skill. Results from a path-analytic model suggest a specific causal order of the three components of lexical quality with the quality of meaning representations partly mediating the effects of form representations.     

Linguistic Complexity,Schematic Representations,and Differential Item Functioning for English Language Learners in Math Tests

This article examines nonmathematical linguistic complexity as a source of differential item functioning (DIF) in math word problems for English language learners (ELLs). Specifically, this study investigates the relationship between item measures of linguistic complexity, nonlinguistic forms of representation and DIF measures based on item response theory difficulty parameters in a state fourth-grade math test. This study revealed that the greater the item nonmathematical lexical and syntactic complexity, the greater are the differences in difficulty parameter estimates favoring non-ELLs over ELLs. However, the impact of linguistic complexity on DIF is attenuated when items provide nonlinguistic schematic representations that help ELLs make meaning of the text, suggesting that their inclusion could help mitigate the negative effect of increased linguistic complexity in math word problems.     

Improving the comprehension of disabled readers

Students with learning disabilities (LD) often have difficulty comprehending what they read. Although reading comprehension problems frequently are associated with inadequate word recognition, students also have difficulties related to comprehension itself—a passive approach to the reading task, insensitivity to text structure, and poor metacognitive skills. The reading and language arts curricula that have emerged from today’s constructivist paradigm can pose problems for these students. Whereas the new curricula emphasize personal interpretations of text and relatively unstructured teaching strategies, students with LD do well with explicit, highly structured instruction. This paper introduces an instructional program designed to teach students with serious learning disabilities how to identify a story theme, and how to relate it to their own real-life experiences. The program focused on understanding a text as a whole, and integrating text meaning with concepts and experiences that are personally meaningful, goals shared by a constructivist approach. At the same time, the program incorporates the explicit, structured instruction that these students also need. A study to evaluate the program’s effectiveness is described, as are current efforts to refine the program to promote transfer of comprehension strategies.     

Analyzing Whispers: college students’ representation and reproduction of sociocultural discourses about bodies,relationships, and (hetero)sexuality using a mobile application

Previous research about college students’ social media usage emphasizes social media practices, often ignoring the content that students’ post. Increasing knowledge about the language that college students use to describe their intimate relationships can inform student affairs practice. Using a digital ethnographic data collection approach and queer theoretical framework, this paper explores the dominant discourses about race, sexuality, and relationships circulated in a mobile social networking application. This paper used content analysis to describe the meaning of text and images produced by college-aged youth in the US. Through this analysis of social media content, I contend that college students engage in the complex representations and reproductions of sociocultural norms about bodies, sexuality, and relationships and that these representations and reproductions influence campus climate. I develop implications for student affairs administrators.     

结构在结构之外——句段关系和联想关系与叙事文本结构的开放性

索绪尔语言学中,句段关系和联想关系保证了一串语音链或语符列(通常所说的句子),同时在横向和纵向上构造出一个立体、动态和开放的结构体系,它是句子得以被理解的基础.文本和句子是同构的,这一结构体系同样是文本得以被理解的基础.具有不同"视阈"的创作主体和阅读主体的创作和阅读活动促成了文本结构的开放性.     

Representational Tools in Computer-Supported Collaborative Argumentation-Based Learning: How Dyads Work With Constructed and Inspected Argumentative Diagrams

This article investigates the conditions under which diagrammatic representations support collaborative argumentation-based learning in a computer environment. Thirty dyads of 15- to 18-year-old students participated in a writing task consisting of 3 phases. Students prepared by constructing a representation (text or diagram) individually. Then they discussed the topic and wrote a text in dyads. They consolidated their knowledge by revising their individual representation. There were 3 conditions: Students could use either (a) the individual texts they wrote, (b) the individual diagrams they constructed, or (c) a diagram that was constructed for them based on the text they wrote. Results showed that students who constructed a diagram themselves explored the topic more than students in the other conditions. We also found differences in the way collaborating dyads used their representations. Dyads who engaged in deep discussion used their representations as a basis for knowledge construction. In contrast, dyads who engaged in only shallow discussion used their representations solely to copy information to their collaborative text. We conclude that diagrammatic representations can improve collaborative learning, but only when they are used in a co-constructive way.     

Conditions for the Effectiveness of Multiple Visual Representations in Enhancing STEM Learning

Visual representations play a critical role in enhancing science, technology, engineering, and mathematics (STEM) learning. Educational psychology research shows that adding visual representations to text can enhance students’ learning of content knowledge, compared to text-only. But should students learn with a single type of visual representation or with multiple different types of visual representations? This article addresses this question from the perspective of the representation dilemma, namely that students often learn content they do not yet understand from representations they do not yet understand. To benefit from visual representations, students therefore need representational competencies, that is, knowledge about how visual representations depict information about the content. This article reviews literature on representational competencies involved in students’ learning of content knowledge. Building on this review, this article analyzes how the number of visual representations affects the role these representational competencies play during students’ learning of content knowledge. To this end, the article compares two common scenarios: text plus a single type of visual representations (T+SV) and text plus multiple types of visual representations (T+MV). The comparison yields seven hypotheses that describe under which conditions T+MV scenarios are more effective than T+SV scenarios. Finally, the article reviews empirical evidence for each hypothesis and discusses open questions about the representation dilemma.     

Reading Ability: Lexical Quality to Comprehension

The lexical quality hypothesis (LQH) claims that variation in the quality of word representations has consequences for reading skill, including comprehension. High lexical quality includes well-specified and partly redundant representations of form (orthography and phonology) and flexible representations of meaning, allowing for rapid and reliable meaning retrieval. Low-quality representations lead to specific word-related problems in comprehension. Six lines of research on adult readers demonstrate some of the implications of the LQH. First, large-scale correlational results show the general interdependence of comprehension and lexical skill while identifying disassociations that allow focus on comprehension-specific skill. Second, word-level semantic processing studies show comprehension skill differences in the time course of form-meaning confusions. Studies of rare vocabulary learning using event-related potentials (ERPs) show that, third, skilled comprehenders learn new words more effectively and show stronger ERP indicators for memory of the word learning event and, fourth, suggest skill differences in the stability of orthographic representations. Fifth, ERP markers show comprehension skill differences in meaning processing of ordinary words. Finally, in text reading, ERP results demonstrate momentary difficulties for low-skill comprehenders in integrating a word with the prior text. The studies provide evidence that word-level knowledge has consequences for word meaning processes in comprehension.     

Does Text Complexity Matter in the Elementary Grades? A Research Synthesis of Text Difficulty and Elementary Students’ Reading Fluency and Comprehension

Prompted by the advent of new standards for increased text complexity in elementary classrooms in the USA, the current integrative review investigates the relationships between the level of text difficulty and elementary students’ reading fluency and reading comprehension. After application of content and methodological criteria, a total of 26 research studies were reviewed. Characteristics of the reviewed studies are reported including the different conceptualizations of text, reader, and task interactions. Regarding the relationships between text difficulty and reading fluency and comprehension, for students’ reading fluency, on average, increased text difficulty level was related to decreased reading fluency, with a small number of exceptions. For comprehension, on average, text difficulty level was negatively related to reading comprehension, although a few studies found no relationship. Text difficulty was widely conceptualized across studies and included characteristics particular to texts as well as relationships between readers and texts. Implications for theory, policy, curriculum, and instruction are discussed.     

主体间性——当代课程观的必然走向

知识和理性主义课程观把课程等同于知识,学生成为知识的奴隶,学生的主体性严重缺失;经验自然主义课程观又把课程理解为学生的个体经验,并表现为纯粹的学生主体的课程,从而造成教师主体与文本主体的缺失。主体间性课程就是基于知识理性主义课程观和经验自然主义课程观的困惑而提出的。主体间性课程是主体间性交往的经验。理解是主体间性课程的基础,对话是主体间性课程实施的主要方式。     

A generative theory of textbook design: Using annotated illustrations to foster meaningful learning of science text

In three experiments, college students read a text explaining how lightning works and then took problem-solving transfer tests. Some students (integrated group) also viewed illustrations depicting the major stages in the formation of lightning that (a) were placed adjacent to corresponding text paragraphs and (b) contained annotations repeating the verbal cause-and-effect information from the text. Other students (separated group) viewed the same illustrations (a) on a separate page and (b) without annotations, after they had finished reading the text. The integrated group generated approximately 50% more creative solutions on transfer problems than the separated group, and this pattern was stronger for students who lacked experience in meteorology than for high-experience students. The positive effects of integrated illustrations depended on incorporating annotations (i.e., captions and labels) into the illustrations rather than placing illustrations close to corresponding paragraphs. Results were interpreted in light of a generative theory of multimedia learning which posits that meaningful learning requires constructing connections between visual and verbal representations of a system.     

Is It Still Considered Reading? Using Digital Video Storytelling to Engage Adolescent Readers

In order to comprehend and ultimately enjoy reading a text, a reader must first be engaged in it. However, many high school students have difficulty engaging with texts for a variety of reasons. This study was interested in innovative solutions to this problem and examined the educational and aesthetic value of a particular digital video reading aid designed to help engage high school students in reading literature. Results suggested that this reading solution did indeed engage these students in the text while also helping them comprehend, critically analyze, and enjoy the reading experience as a whole. Additionally, these students positively responded to a bonus literature discussion section, thereby suggesting their desire to co-construct meanings with other readers.     

Students’ meaning making in science: solving energy resource problems in virtual worlds combined with spreadsheets to develop graphs

The aim of this study is to scrutinize the characteristics of conceptual meaning making when students engage with virtual worlds in combination with a spreadsheet with the aim to develop graphs. We study how these tools and the representations they contain or enable students to construct serve to influence their understanding of energy resource consumption. The data were gathered in 1st grade upper-secondary science classes and they constitute the basis for the interaction analysis of students?? meaning making with representations. Our analyses demonstrate the difficulties involved in developing students?? orientation toward more conceptual orientations to representations of the knowledge domain. Virtual worlds do not in themselves represent a solution to this problem.     

The influence of multiperspectivity in history texts on students’ representations of a historical event

School history textbook narratives of a nation’s past often present limited perspectives, which may impede the aim of teaching history from multiple perspectives. Less is known about the influence of including multiple perspectives on students’ representations of the past. This study examines the extent to which students include multiple perspectives when processing a schoolbook text that includes multiple perspectives compared to a schoolbook history text containing fewer perspectives. Tenth grade students (N = 104) in four schools were randomly assigned to read one of two texts on the Dutch Revolt and asked to make a summary. Multiperspectivity was analysed through the representation of actors, aspects of scale, dimensions and historiography. The students working with the text having high multiperspectivity showed more perspectives in their representations. In the summaries, these students included significantly more perspectives than did the students using the text with fewer perspectives. Moreover, these students’ representations of the main actors were more nuanced. The students using the text with high multiperspectivity situated the conflict in a broader international context and integrated more historiographical dimensions. The insights generated by these outcomes emphasize the important role of textbooks when aiming to teach history from multiple perspectives.

     

Schema effects in EFL reading comprehension

Schemata are known to play an important a role in reading comprehension. Comprehension is seen as the interaction between top-down processing from activated schemata and bottom-up processing from concepts expressed by the text. If readers activate an inappropriate schema, they may miss the meaning of the text. The present study examines the effects of faulty schemata on reading comprehension. At the end of an advanced English reading course at Haifa University, a test of reading comprehension was administered to 125 students. One section of the test contained an advanced level text about love and marriage, a text close to the personal experience of the examinees. Using dictionaries, students translated expressions and sentences and answered short-answer comprehension questions in English. Results indicated that 23% of the wrong answers to the comprehension questions were driven by schemata which differed substantially from the actual content of the text.