Trends in computer applications in science assessment

Seven computer applications to science assessment are reviewed. Conventional test administration includes record keeping, grading, and managing test banks. Multiple-choice testing involves forced selection of an answer from a menu, whereas constructed-response testing involves options for students to present their answers within a set standard deviation. Adaptive testing attempts to individualize the test to minimize the number of items and time needed to assess a student's knowledge. Figurai response testing assesses science proficiency in pictorial or graphic mode and requires the student to construct a mental image rather than selecting a response from a multiple choice menu. Simulations have been found useful for performance assessment on a large-scale basis in part because they make it possible to independently specify different aspects of a real experiment. An emerging approach to performance assessment is solution pathway analysis, which permits the analysis of the steps a student takes in solving a problem. Virtually all computer-based testing systems improve the quality and efficiency of record keeping and data analysis.     

Expanding computer science education in schools: understanding teacher experiences and challenges

The increased push for teaching computer science (CS) in schools in the United States requires training a large number of new K-12 teachers. The current efforts to increase the number of CS teachers have predominantly focused on training teachers from other content areas. In order to support these beginning CS teachers, we need to better understand their experiences and challenges encountered in the classroom. This study investigated U.S. CS teachers’ perspectives on the demands of teaching computer science and support needed to ensure quality teaching. Results suggested that teachers face a number of challenges, including isolation, lack of adequate computer science background, and limited professional development resources.     

Computational communities: African-American cultural capital in computer science education

Enrolling the cultural capital of underrepresented communities in PK-12 technology and curriculum design has been a primary strategy for broadening the participation of students of color in U.S. computer science (CS) fields. This article examines two ways that African-American cultural capital and computing can be bridged in CS education. The first is community representation, using cultural capital to highlight students’ social identities and networks through computational thinking. The second, computational integration, locates computation in cultural capital itself. I survey two risks – the appearance of shallow computing and the reproduction of assimilationist logics – that may arise when constructing one bridge without the other. To avoid these risks, I introduce the concept of computational communities by exploring areas in CS education that employ both strategies. This concept is then grounded in qualitative data from an after school program that connected CS to African-American cosmetology.     

Girls and computer science: experiences,perceptions, and career aspirations

The purpose of this mixed methods study was to examine ways to promote computer science (CS) among girls by exploring young women’s experiences and perceptions of CS as well as investigating factors affecting their career aspirations. American girls aged 10–16 participated in focus group interviews as well as pre-, post-, and follow-up surveys while attending a CS camp. The analysis of data revealed that although the participants were generally positive about the CS field, they had very limited knowledge of and experience with CS, leading to little aspiration to become computer scientists. The findings also indicated that girls’ affinity for and confidence in CS were critical factors affecting their motivation for pursuing a CS-related career. The study demonstrated that participation in the CS camp motivated a small number of participants to be interested in majoring in CS, but the activity time was too short to make a significant impact. Based on the findings, we suggest that providing CS programming experiences in K-12 classrooms is important in order to boost girls’ confidence and interest in CS.     

Implicit intelligence beliefs of computer science students: Exploring change across the semester

This study investigated introductory computer science (CS1) students’ implicit beliefs of intelligence. Referencing Dweck and Leggett’s (1988) framework for implicit beliefs of intelligence, we examined how (1) students’ implicit beliefs changed over the course of a semester, (2) these changes differed as a function of course enrollment and students’ motivated self-regulated engagement profile, and (3) implicit beliefs predicted student learning based on standardized course grades and performance on a computational thinking knowledge test. For all students, there were significant increases in entity beliefs and significant decreases in incremental beliefs across the semester. However, examination of effect sizes suggests that significant findings for change across time were driven by changes in specific subpopulations of students. Moreover, results showed that students endorsed incremental belief more strongly than entity belief at both the beginning and end of the semester. Furthermore, the magnitude of changes differed based on students’ motivated self-regulated engagement profiles. Additionally, students’ achievement outcomes were weakly predicted by their implicit beliefs of intelligence. Finally, results showed that the relationship between changes in implicit intelligence beliefs and student achievement varied across different CS1 courses. Theoretical implications for implicit intelligence beliefs and recommendations for STEM educators are discussed.     

非计算机专业学生如何学习计算机信息技术

作者从提高应用能力、不断深入学习、培养编程能力等方面阐述了非计算机专业的学生如何学习计算机信息技术。     

论在计算机教学中如何促进道德素质教育

针对计算机使用中出现的道德问题，在计算机教学中应引导学生提高警惕，加强网络安全意识，正确对待网络，合理取舍网络信息，培养网络“环保意识”，进而提高学生的道德素质。     

Rhetorical mobilities and the city: The white slavery controversy and racialized protection of women in the U.S.

The case study of an early twentieth century controversy over “white slavery” demonstrates the importance of an explicit consideration of mobility based rhetoric to understanding space and political subjectivities within space. Through an analytical framework of mobility that considers scale, connection, time, and agency, I find that the city was constructed as a gendered and racialized space, which enabled restrictions to corporal mobility. I provide both a justification and a model for reading mobility based rhetoric in public controversy.     

Leveraging local resources and contexts for inclusive computer science classrooms: Reflections from experienced high school teachers implementing electronic textiles

ABSTRACT

Background and context

Promoting open-ended projects presents new opportunities and challenges for inclusive teaching in CS classrooms. While efforts have been made to develop inclusive curricula, little research has focused on ways teachers apply curricula in their classrooms to promote inclusion.     

Learning from each other: what social studies can learn from the controversy surrounding the teaching of evolution in science

This article addresses the need for researchers to move beyond discipline-specific approaches to research and practice and offers an example of how interdisciplinary understandings can increase knowledge in respective disciplines. The specific focus of the article is the shared challenges of broaching controversy in science and social studies classrooms. Although there is much that social studies teachers can learn about the teaching of controversial public issues from the challenges science educators face in teaching evolutionary theory, and vice versa, the two literature bases have little overlap. Through this example of broaching curricular controversy in the classroom, the author argues that content instruction can be improved by increasing awareness of research and practice in other disciplines.     

Explaining a reverse gender gap in advanced physics and computer science course-taking: An exploratory case study comparing Hebrew-speaking and Arabic-speaking high schools in Israel

In the past three decades in high-income countries, female students have outperformed male students in most indicators of educational attainment. However, the underrepresentation of girls and women in science courses and careers, especially in physics, computer sciences, and engineering, remains persistent. What is often neglected by the vast existing literature is the role that schools, as social institutions, play in maintaining or eliminating such gender gaps. This explorative case study research compares two high schools in Israel: one Hebrew-speaking state school that serves mostly middleclass students and exhibits a typical gender gap in physics and computer science; the other, an Arabic-speaking state school located in a Bedouin town that serves mostly students from a lower socioeconomic background. In the Arabic-speaking school over 50% of the students in the advanced physics and computer science classes are females. The study aims to explain this seemingly counterintuitive gender pattern with respect to participation in physics and computer science. A comparison of school policies regarding sorting and choice reveals that the two schools employ very different policies that might explain the different patterns of participation. The Hebrew-speaking school prioritizes self-fulfillment and “free-choice,” while in the Arabic-speaking school, staff are much more active in sorting and assigning students to different curricular programs. The qualitative analysis suggests that in the case of the Arabic-speaking school the intersection between traditional and collectivist society and neoliberal pressures in the form of raising achievement benchmarks contributes to the reversal of the gender gap in physics and computer science courses.     

Beyond the ‘two cultures’ in the teaching of disaster: or how disaster education and science education could benefit each other

Abstract

Looking at the current discourse on how to teach disaster, one apparent gap is that the scientific aspect of disaster is discussed and taught mostly in isolation from its human aspect. Disaster educators seem to be primarily interested in addressing issues such as social vulnerability, community resilience, personal action-related knowledge and emotion rather than the scientific basis of disasters, whereas science educators often fail to make connections between the scientific accounts of disasters and the social and political contexts that surround them. In this theoretical paper, I claim that this disconnect is problematic and that overcoming it is a key to understanding and teaching disaster in a more nuanced and comprehensive manner. Drawing primarily on science and technology studies (STS) on disaster, I explore the potential of interpreting disasters as failures of socio-technical systems, which helps us unearth the inner workings of the complex network of science, technology and society in the wake of calamities. STS challenges the dichotomous understanding of the material and social worlds and takes a view that they shape each other to constitute socio-technical systems. Taking such an approach to disaster allows a synthetic understanding of the natural, technological and human-made disasters that we are faced with in the age of uncertainty and complexity. Based on the ideas of STS and examples of recent disasters in East Asian countries, I argue that disaster education and science education can cross-pollinate in tackling the post-disaster hardship and cultivating responsible citizens.     

Women and science education in Cameroon: Some critical reflections

Ten Cameroonian women were interviewed in order to find out how they had managed to become scientists and science educators. We talked to them about the kinds of support they had been given by their families, how science was taught in schools both in the past and at present, and whether or not they thought it possible to integrated science and African traditional thought in schools and universities. We used a framework incorporating the concepts of gender and social class in order to interpret their views. On this basis, we understood why these women tended to underestimate the importance of institutional discrimination in science and to conceive of the norms of professionalism as unsurpassable. In contrast, we suggest that women in Cameroon will only be able to participate fully when their own experience and ways of knowing are incorporated into the teaching and structures of science.     

Motivation in high school science students: A comparison of gender differences in life,physical, and earth science classes

The aims of this study were to examine self‐efficacy and other motivation variables among high school science students (n = 502); to determine the degree to which each of the four hypothesized sources of self‐efficacy makes an independent contribution to students' science self‐efficacy beliefs; to examine possible differences between life, physical, and Earth science classes; and to investigate patterns of gender differences that may vary among the fields of science. In Earth science classes, girls earned higher grades and reported stronger science self‐efficacy. In life science classes, girls earned higher grades but did not report stronger self‐efficacy, and did report higher science anxiety. In physical science, there were no gender differences in grades or self‐efficacy, but girls again reported higher levels of science anxiety. For boys across science fields, science self‐efficacy significantly predicted course grades and mastery experiences was the only significant predictor of self‐efficacy. For girls, self‐efficacy was also the strongest predictor of science grade across fields. Mastery experiences significantly predicted self‐efficacy in Earth science for girls, but social persuasions, vicarious experiences, and physiological states were better predictors of science self‐efficacy in life and physical science classes. Results support (Bandura, A., 1997) hypothesized sources of self‐efficacy, previous research findings on self‐efficacy in the domain of science, and validate the suggestion made by Lau and Roeser (2002) to disaggregate data by science field. © 2008 Wiley Periodicals, Inc. J Res Sci Teach 45: 955–970, 2008     

The effect of reciprocal teaching and programmed instruction on learning outcome in computer science education

Answers to the questions of which instructional methods are suitable for school, what instructional methods should be applied in teaching individual subjects and how instructional methods support the act of learning represent challenges to general education and education in individual subjects. This study focuses on the empirical examination of learning outcome with respect to two instructional methods: programmed instruction and reciprocal teaching. An SPF-2 × 2•2 design is used to control instructional method, time and class context. Learning outcome on search queries is assessed with reference to multi-choice test items. The empirical findings show that learning with programmed instruction performs better than reciprocal teaching.     

Gender ratios in high school science departments: The effect of percent female faculty on multiple dimensions of students' science identities

To examine how school characteristics are tied to science and engineering views and aspirations of students who are underrepresented in science and engineering fields, this mixed‐methods study explores relationships between aspects of students' science identities, and the representation of women among high school science teachers. Quantitative analyses tested the hypothesis that percent female faculty would have a positive effect on girls' science interests, and perceptions in particular, given the potentially greater availability of women role models. Findings indicate that percent female science faculty does not have an effect on a range of science measures for both male and female students, including the ways in which they understand scientific practice, their science self‐concept, and their interest in science‐related college majors. As qualitative data demonstrate, this could reflect practical constraints at schools where female faculty are concentrated and narrow perceptions of science teachers and “real” science. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 980–1009, 2007