Enhancing the quality of argumentation in school science

The research reported in this study focuses on the design and evaluation of learning environments that support the teaching and learning of argumentation in a scientific context. The research took place over 2 years, between 1999 and 2001, in junior high schools in the greater London area. The research was conducted in two phases. In phase 1, working with a group of 12 science teachers, the main emphasis was to develop sets of materials and strategies to support argumentation in the classroom, and to support and assess teachers' development with teaching argumentation. Data were collected by video‐ and audio‐recording the teachers' attempts to implement these lessons at the beginning and end of the year. During this phase, analytical tools for evaluating the quality of argumentation were developed based on Toulmin's argument pattern. Analysis of the data shows that there was significant development in the majority of teachers use of argumentation across the year. Results indicate that the pattern of use of argumentation is teacher‐specific, as is the nature of the change. In phase 2 of the project, the focus of this paper, teachers taught the experimental groups a minimum of nine lessons which involved socioscientific or scientific argumentation. In addition, these teachers taught similar lessons to a comparison group at the beginning and end of the year. The purpose of this research was to assess the progression in student capabilities with argumentation. For this purpose, data were collected from 33 lessons by video‐taping two groups of four students in each class engaging in argumentation. Using a framework for evaluating the nature of the discourse and its quality developed from Toulmin's argument pattern, the findings show that there was improvement in the quality of students' argumentation. This research presents new methodological developments for work in this field. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 994–1020, 2004     

Preschoolers' Ability to Adopt Justice and Care Orientations to Moral Dilemmas

This study examined the moral reasoning that preschoolers use in resolving moral dilemmas. Children's resolutions and justifications were examined with regard to their care orientation and their justice orientation. Thirty-one preschool children participated in the study (18 girls, 13 boys). Children were each read 4 stone containing moral dilemmas and were asked to resolve these dilemmas. The results indicated that children's answers revealed a care orientation or a justice orientation with equal frequency. At times, children could even accept both orientations to the same dilemma. The data analysis also revealed no gender differences in moral orientation. Results are discussed in terms of children's social-cognitive abilities. Educational implications are also raised.     

Effect of productive discussion on written argumentation in earth science classrooms

Abstract

Active teachers noted persistent problems in their classrooms, including low levels of student engagement and gaps in students’ use of evidence in forming arguments. Earth Science students provided written responses to two questions using the previously implemented Claim, Evidence, Reasoning (CER) framework. The first question was answered without a preceding discussion whereas the second question was answered following a discussion protocol—no discussion, discussion without Talk Science, and discussion with Talk Science. A ninth grade teacher more comprehensively implemented Talk Science by incorporating statements from all four goals whereas a seventh grade teacher did not. As a result, ninth grade students improved their use of evidence, reasoning, and content, but seventh graders did not show the same improvements. All students valued the discussion, but this study shows that Talk Science discussions can be used to improve students’ content knowledge and CER argumentation skills.     

The relationship between web enjoyment and student perceptions and learning using a web‐based tutorial

Web enjoyment has been regarded as a component of system experience. However, there has been little targeted research considering the role of web enjoyment alone in student learning using web‐based systems. To address this gap, this study aims to examine the influence of web enjoyment on learning performance and perceptions by controlling system experience as a variable in the study. 74 students participated in the study, using a web‐based tutorial covering subject matter in the area of ‘Computation and algorithms’. Their learning performance was assessed with a pre‐test and a post‐test and their learning perceptions were evaluated with a questionnaire. The results indicated that there are positive relationships between the levels of web enjoyment and perceived usefulness and non‐linear navigation for users with similar, significant levels of system experience. The implications of these findings in relation to web‐based learning are explored and ways in which the needs of students who report different levels of web enjoyment might be met are discussed.     

Further Psychometric Support for the 10‐Item Version of the Perceived Stress Scale

Because of increased stress conditions in college students, updated psychometrics of the Perceived Stress Scale, 10‐item version (PSS‐10; S. Cohen & G. Williamson, 1988) are necessary. Participants were 281 undergraduates at 3 public universities. An exploratory factor analysis revealed a 2‐factor structure measuring Perceived Helplessness and Perceived Self‐Efficacy. Normative results, internal consistencies, and construct validity were supported. The current findings reveal that the PSS‐10 is a reliable and valid instrument for assessment of perceived stress in college students.     

Towards a framework of interactions in a blended synchronous learning environment: what effects are there on students' social presence experience?

A synchronous blend of online learning and “face-to-face” teaching is becoming a feasible instructional approach in higher education with the advent of technology. Although this learning mode is not new in higher education, little research has been done to contextualise social presence experiences in which effects of interactions were explored for enhancing learning. A qualitative approach was adopted using the case study method to examine the instructor and students’ pedagogic interactions in the social presence of a blended synchronous learning environment. This paper reports an exploration of the blended learning with an online group of students at a remote site attending a computer-aided engineering drawing course synchronously with a face-to-face group taught by an instructor in a laboratory. The process of interaction was visually and verbally mediated by videoconference as if in an online face-to-face learning community. The findings show that the online and face-to-face groups had different social presence experiences in which interaction emerged. Emotional adaptation and practice is needed for the students and the instructor in such a complex environment. Based on the interaction patterns, a framework of interactions in the blended synchronous learning environment is conceptualised to inform course development and instructional design. Implications for further study are also discussed.     

Cultural diversity and differences in formal reasoning ability

To test the hypothesis that cultural diversity contributes to the development of formal reasoning, samples of adolescents from three predominately white middle-class communities located in areas that varied in the extent to which they offered cultural diversity (i.e., rural, suburan homogeneous, suburban heterogeneous) were administered a test of formal reasoning and a test of analytical intelligence. Results showed significant differences in formal reasoning in favor of the suburban heterogeneous sample on complex reasoning items. The suburban groups showed equal performance (but superior to the rural Ss) on the test of analytical intelligence. On the less complex reasoning items and on one item embedded in a rural farming context, the rural Ss showed relatively better performance. Implications for using science instruction to promote formal reasoning are discussed.     

New tests for departures from random behavior in spatial memory experiments

We present statistical tests for departures from random expectation in spatial memory tasks. We consider two common protocols for spatial memory experiments. In the first one, subjects are allowed to search a fixed number of sites. In the second protocol, subjects are allowed to search until they achieve a fixed number of successes. In either of these protocols, the subjects involved may or may not revisit sites that have been previously searched or exploited. This yields four situations to consider: fixed number of sites searched or fixed number of successes, with or without revisits. We derive analytical expressions for the probability mass functions, expectations, and variances associated with each type of null hypothesis. We present three statistical tests of these hypotheses: the Kolmogorov-Smirnov test, the ordinary sign test, and theZ test. We use our results to demonstrate a priori calculation of sample sizes and statistical power and to consider a mixed model of sampling with and without replacement.     

Flipped Instruction in a High School Science Classroom

This paper reports on a quasi-experimental study examining the effectiveness of flipped instruction in a 9th grade biology classroom. This study included four sections of freshmen-level biology taught by the first author at a private secondary school in the Pacific Northwest. Using a block randomized design, two sections were flipped and two remained traditional. The quiz and posttest data were adjusted for pretest differences using ANCOVA. The results suggest that flipped instruction had a positive effect student achievement, with effect sizes ranging from +0.16 to +0.44. In addition, some students reported that they preferred watching video lectures outside of class and appreciated more active approaches to learning.     

On the Origins and Persistence of the Jewish Identity Industry in Jewish Education

“Jewish identity,” which emerged as an analytical term in the 1950s, appealed to a set of needs that American Jews felt in the postwar period, which accounted for its popularity. Identity was the quintessential conundrum for a community on the threshold of acceptance. The work of Kurt Lewin, Erik Erikson, Will Herberg, Marshall Sklare, and others helped to shape the communal conversation. The reframing of that discourse from one that was essentially psychosocial and therapeutic to one that was sociological and survivalist reflected the community’s growing sense of physical and socioeconomic security in the 1950s and early 1960s. The American Jewish Committee and its Division of Scientific Research offers an enlightening case study of this phenomenon. Jewish educators seized on identity formation, making it the raison d’être of their endeavor. But the ascent of identity discourse also introduced a number of challenges for the Jewish educator—conceptual, methodological, political, and even existential.