The increased exposure to technology raises a need for understanding how the digital world works, just as we learn about the physical world. As a result, countries all over the world are renewing ...their school curricula in order to include digital competence, computer science or other similar content. In this paper, we provide insight into what teachers see as crucial aspects when implementing a new curricula introducing digital competence as a transversal element. We have analysed 86 Finnish teachers’ descriptions of digitally competent schools and digitally competent personnel, in order to identify a list of prerequisites that can be helpful to school leaders who are to drive the change at their local schools.
Computer science is becoming ever increasingly important to our society. Computer science content has, however, not traditionally been considered a natural part of curricula for primary and secondary ...education. Computer science has traditionally been primarily a university level discipline and there are no widely accepted general standards for what computer science at K-12 level entails. Also, as the interest in this area is rather new, the amount of research conducted in the field is still limited. In this paper we review how 10 different countries have approached introducing computer science into their K-12 education. The countries are Australia, England, Estonia, Finland, New Zealand, Norway, Sweden, South Korea, Poland and USA. The studied countries either emphasize digital competencies together with programming or the broader subject of computer science or computing. Computational thinking is rarely mentioned explicitly, but the ideas are often included in some form. The most common model is to make computer science content compulsory in primary school and elective in secondary school. A few countries have made it compulsory in both, while some countries have only introduced it in secondary school.
The aim of this article is to broadly elaborate on how programming can be understood as a new teaching scope in preschools, focusing specifically on debugging as one of the phases involved in ...learning to program. The research question How can debugging as part of teaching and learning programming be understood as multimodal learning? has guided the analysis and the presentation of the data. In this study, and its analysis process, we have combined a multimodal understanding of teaching and learning practices with understandings of programming and how it is practiced. Consequently, the multidisciplinary approach in this study, combining theories from social sciences with theories and concepts from computer science, is central throughout the article. This is therefore also a creative, explorative process as there are no clear norms to follow when conducting multidisciplinary analyses. The data consist of video recordings of teaching sessions with children and a teacher engaged in programming activities. The video material was recorded in a preschool setting during the school year 2017–2018 and consists of 25 sessions of programming activities with children, who were four or five years old. The results show how debugging in early childhood education is a multimodal activity socially established by use of speech, pointing and gaze. Our findings also indicate that artefacts are central to learning debugging, and a term ‘instructional artefacts’ is therefore added. Finally, the material shows how basic programming concepts and principles can be explored with young children.
The technological development has raised awareness for the importance of digital competence and computational thinking (CT) to understand the digital world and has resulted in revised curricula in ...many countries. In Finland, a new curriculum for grades 1–9 came into force in 2016 introducing digital competence (including programming) to be integrated in other subjects. Most teachers lack prior experience in programming and there is a need for suitable instructional models. This article presents a cross-curricular teaching sequence and the results from a case study conducted in four Finnish schools. Students in grades 4–6 collaboratively worked on a project combining arts, design and CT with other subjects. The results show that students demonstrated several CT abilities while working on their projects, in particular creativity, tinkering and debugging. The findings also indicate that teachers and students learned together (co-agency) and suggest that models like the teaching sequence can help and encourage teachers to integrate programming and CT in a cross-curricular manner. Still, the teachers’ knowledge, ambition level and understanding of the task at hand, as well as the organizational support appear to play a notable role when planning and carrying out projects of this kind. While CT is commonly seen as developed through programming, the teaching sequence seems to have fostered CT abilities through the project as a whole, with programming playing the role of a tool or a glue depending on the time available, and the students’ skill and ambition level.
Controlling complexity through the use of abstractions is a critical part of problem solving in programming. Thus, becoming proficient with procedural and data abstraction through the use of ...user-defined functions is important. Properly using functions for abstraction involves a number of other core concepts, such as parameter passing, scope and references, which are known to be difficult. Therefore, this paper aims to study students’ proficiency with these core concepts, and students’ ability to apply procedural and data abstraction to solve problems. We collected data from two years of an introductory Python course, both from a questionnaire and from two lab assignments. The data shows that students had difficulties with the core concepts, and a number of issues solving problems with abstraction. We also investigate the impact of using a visualization tool when teaching the core concepts.
Concurrency is often perceived as difficult by students. One reason for this may be due to the fact that abstractions used in concurrent programs leave more situations undefined compared to ...sequential programs (e.g., in what order statements are executed), which makes it harder to create a proper mental model of the execution environment. Students who aim to explore the abstractions through testing are further hindered by the non-determinism of concurrent programs since even incorrect programs may seem to work properly most of the time. In this paper we aim to explore how students’ understanding these abstractions by examining 137 solutions to two concurrency questions given on the final exam in two years of an introductory concurrency course. To highlight problematic areas of these abstractions, we present alternative abstractions under which each incorrect solution would be correct.
Although there is no universal agreement that students should learn programming, many countries have reached a consensus on the need to expose K-12 students to Computational Thinking (CT). When, what ...and how to teach CT in schools are open questions and we attempt to address them by examining how well students around the world solved problems in recent Bebras challenges. We collected and analyzed performance data on Bebras tasks from 115,400 students in grades 3-12 in seven countries. Our study provides further insight into a range of questions addressed in smaller-scale inquiries, in particular about the possible impact of schools systems and gender on students' success rate.In addition to analyzing performance data of a large population, we have classified the considered tasks in terms of CT categories, which should account for the learning implications of the challenge. Algorithms and data representation dominate the challenge, accounting for 75-90% of the tasks, while other categories such as abstraction, parallelization and problem decomposition are sometimes represented by one or two questions at various age groups. This classification can be a starting point for using online Bebras tasks to support the effective learning of CT concepts in the classroom.
Teachers around the world have started teaching programming at the K-9 level, some due to the formal introduction of programming in the national curriculum, others without such pressure and on their ...own initiative. In this study, we attempted to understand which skills - both CT-related and general - are developed among pupils in the process of working with programming in schools. To do so, we interviewed 19 Swedish teachers who had been teaching programming for a couple of years on their own initiative. The teachers were selected based on their experience in teaching programming. Our thematic analysis of these interviews shed light on what skills teachers perceive pupils develop when programming. This led us to identify three themes related to CT skills and five themes related to general skills. The CT skills identified corresponded well with and were thus thematically structured according to the dimensions of CT proposed in the framework of Brennan and Resnick, namely computational concepts, computational practices and computational perspectives. In addition to the CT skills, our thematic analysis also resulted in the identification of general skills related to digital competency and 21st century skills, namely cognitive skills and attitudes, language skills, collaborative skills and attitudes and creative problem-solving skills and attitudes.
In this paper, we analyze the errors novice students make when developing invariant
based programs. In addition to presenting the general error types, we also look at what students
have difficulty ...with when it comes to expressing invariants. The results indicate that an introductory
course utilizing the invariant based approach is suitable from the very beginning of university
studies in CS without being “too advanced”. Although inventing the invariant was not found to
be trivial, the main difficulty faced by novices when applying a correct-by-construction approach
to program development seems to be related to weak skills in translating intuitive and informal
statements into a symbolic form using logical notation in general and quantifiers in particular.
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