A theory of instruction for introductory programming skills

ABSTRACT

Background and Context: Current introductory instruction fails to identify, structure, and sequence the many skills involved in programming.

Objective: We proposed a theory which identifies four distinct skills that novices learn incrementally. These skills are tracing, writing syntax, comprehending templates (reusable abstractions of programming knowledge), and writing code with templates. We theorized that explicit instruction of these skills decreases cognitive demand.

Method: We conducted an exploratory mixed-methods study and compared students’ exercise completion rates, error rates, ability to explain code, and engagement when learning to program. We compared material that reflects this theory to more traditional material that does not distinguish between skills.

Findings: Teaching skills incrementally resulted in improved completion rate on practice exercises, and decreased error rate and improved understanding of the post-test.

Implications: By structuring programming skills such that they can be taught explicitly and incrementally, we can inform instructional design and improve future research on understanding how novice programmers develop understanding.     

大学生创业自我效能感的中介作用探究

创业自我效能感作为创业者对于自己是否能够完成创业任务的信念,在大学生创业活动中起着十分关键的作用.以同济大学、复旦大学、上海大学等上海地区的1086位大学生为样本,通过SPSS及AMOS软件,构建大学生创业能力影响因素及中介效应的结构方程模型.研究结果表明:创业环境、创业教育、创业特质以及创业自我效能感等因素对提升大学生的创业能力均具有正向显著影响;创业自我效能感分别在创业环境、创业教育、创业特质与创业能力之间起部分中介作用.研究结论可以为大学生创业能力的提升、高校开展创业类课程、政府出台相关创业政策提供一定的指导和借鉴.     

What do teacher educators know about English spelling?

Reading and Writing - Teachers’ knowledge of literacy has gained considerable interest over the last three.decades, largely with a focus on the basic language constructs of phonological....     

Is accreditation ‘on the right track’? The views of Portuguese academics

In many countries, quality assurance systems rely on study programme accreditation. As with all quality assurance mechanisms, accreditation should also be continuously improved in order to maintain its relevance as a promoter of study programme quality. A way to move accreditation forward is by taking into account academics’ views, interests and needs about the process, since their support for it is paramount for its success and effectiveness. This paper analyses Portuguese academics’ knowledge and views on accreditation with the aim of understanding if the process is being supported and is on the right route for being effective. It is based on the analysis of 1484 academics’ answers to a questionnaire distributed in 16 higher education institutions. This analysis reveals a moderately positive attitude of academics towards accreditation, reflected in an only moderate knowledge of the process as well as in a mild agreement with its characteristics and implementation features. This suggests that there is room for improvement to bring this quality assurance mechanism closer to academics’ expectations and needs and therefore to improve accreditation’s effectiveness.

     

A mixed method study of ethical issues in classroom assessment in Chinese higher education

The purpose of this study was to explore Chinese university professors’ decisions about ethical issues in classroom assessment. A survey with fifteen scenarios that describe professors’ thoughts about ethics in assessment practices was administrated to 555 professors from 143 colleges and universities in 29 provinces in China. The results of the quantitative analysis indicated that professors’ interest in professional development related to classroom assessment, and their dispositions were significantly associated with their agreement with experts in the field of classroom assessment. Professors’ gender, highest degree, professional rank, and years of teaching experience did not significantly predict their agreement. The qualitative analysis revealed that maintaining fair assessment vs being caring to students and asserting professors’ rights vs abiding by university policy were the crucial aspects for professors to consider in classroom assessment. Findings of the study could help educators identify ethical issues in assessment, develop guidelines to ensure fair assessment, and incorporate differentiated strategies in professional development workshops in higher education.

     

An Expanded View of Joint Attention: Skill,Engagement, and Language in Typical Development and Autism

This study provides an expanded view of joint attention and its relation to expressive language development. A total of 144 toddlers (40 typically developing, 58 with autism spectrum disorder [ASD], 46 with developmental delay [DD]) participated at 24 and 31 months. Toddlers who screened positive for ASD risk, especially those subsequently diagnosed with ASD, had poorer joint attention skills, joint engagement during parent–toddler interaction, and expressive language. Findings highlight the dynamic relation between joint attention and language development. In the ASD and DD groups, joint engagement predicted later expressive vocabulary, significantly more than predictions based on joint attention skills. Joint engagement was most severely impacted when toddlers did not talk initially and improved markedly if they subsequently began to speak.     

Pedro Gutiérrez Bueno’s Textbooks: Audiences, Teaching Practices and Chemical Revolution

Pedro Gutiérrez Bueno wrote two editions of a chemistry textbook between 1788 and 1802. The paper offers a comparative view of both editions taking into account Gutiérrez Bueno’s biography, his intended audience and the changes related to the so-called chemical revolution. Some conclusions are at odds with common images about scientific revolutions and the role of textbooks in science. The analysis aims to shed some light on the multiple historical forces shaping textbooks and the way in which scientific change is assimilated by their writers. This research was partially supported by the program BHA2002-04611-CO3-02     

Using the known to chart the unknown: A review of first-language influence on the development of English-as-a-second-language spelling skill

Currently, there is a practical demand and necessity for research on how English-as-a-second language (ESL) learners acquire literacy skills, such as spelling. One important issue of this research agenda is how ESL learners apply first-language knowledge to learning to spell in English. Twenty-seven studies were reviewed that investigated the influence of the first language on ESL learners’ development of English spelling skill. Evidence was found for both positive and negative transfer of first-language knowledge and processes to ESL learners’ English spelling. These results are in agreement with theoretical propositions about the interdependence between first- and second-language academic skills [e.g., Cummins, J. (1981). In California State Department of Education (Ed.), Schooling and language minority students: A theoretical framework (pp. 3–49). Los Angeles: Evaluation, Dissemination, and Assessment Center, California State University, Los Angeles]. The findings are discussed in relation to the ESL learner’s first-language proficiency level and distance between first language and English. Comparisons are drawn between ESL learners’ and English monolinguals’ spelling development and suggestions for future research are provided.     

Dynamic Transition Patterns in Acculturation Among Hispanic Adolescents

Acculturation consists of multiple domains (i.e., cultural practices, identifications, and values). However, less is known about how acculturation processes influence each other across multiple domains of acculturation. This study was designed to investigate transition patterns of acculturative processes within and across domains in a sample of 302 recent-immigrant Hispanic adolescents, M_age (SD) = 14.51 years (0.88) at baseline; male = 53%). Adolescents were assessed six times over a 3-year period. Latent profile analyses identified two profiles (high [or increasing] vs. low) for each domain at each timepoint. We found largely stable transition patterns in each domain over six timepoints. Importantly, sequential associations among profiles in acculturation domains were also detected. Implication for acculturation theory and research are discussed.