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15th European Conference on Technology Enhanced Learning (EC-TEL)

作者： Voulodimos, Athanasios Karagiannopoulos, Paraskevas Drosouli, Ifigenia Miaoulis, Georgios Univ West Attica Dept Informat & Comp Engn Athens Greece

ISBN: (纸本)9783030577162;9783030577179

Computational Geometry is a field of study whose full comprehension by students requires a combination of mathematical, algorithmic and application-oriented approaches. Due to the inherently visual nature of geometrical problems as well as to the complexity of related algorithms in terms of data structures and concepts employed, algorithm visualization can provide significant added value to the learning process, by helping shorten the cognitive distance gap between concept and visualization. In this paper, we describe CGVis, a visualization-based interactive educational platform for Computational Geometry algorithms. The paper explains the major design decisions adopted and describes the platform's main features and functionality in detail. The platform has been evaluated in real-world settings by capturing postgraduate students' response and feedback regarding usefulness, usability and user experience, as well as by measuring the platform's educational effectiveness.

关键词： algorithm visualization Computational Geometry Mathematics education Interactive learning environments

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Reevaluating and Refining the Engagement Taxonomy

Reevaluating and Refining the Engagement Taxonomy

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13th Annual Conference on Innovation and Technology in Computer Science Education

作者： Lauer, Tobias Univ Freiburg D-79098 Freiburg Germany

We propose extensions to the engagement taxonomy, based on a comparative review of several experiments carried out within that framework to assess the effectiveness of algorithm visualization.

ISBN: (纸本)9781605580784

We propose extensions to the engagement taxonomy, based on a comparative review of several experiments carried out within that framework to assess the effectiveness of algorithm visualization.

关键词： algorithm visualization engagement taxonomy

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An Educational Game for Teaching Search algorithms 8

An Educational Game for Teaching Search Algorithms

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8th International Conference on Computer Supported Education (CSEDU)

作者： Grivokostopoulou, Foteini Perikos, Isidoros Hatzilygeroudis, Ioannis Univ Patras Dept Comp Engn & Informat Patras Greece

ISBN: (纸本)9789897581793

Search algorithms constitute an important topic in the Artificial Intelligence curriculum and are acknowledged by most tutors to be a hard and complex domain for teachers to teach and students to deeply understand. In this paper, we present an educational computer game, designed to teach search algorithms, based on the popular Pacman game. The purpose of the educational Pacman game is to assist students to understand the artificial intelligence topic of search algorithms in an entertaining, interactive and motivating way. During their experience with the game, students can examine the behaviour of various search algorithms and a graphical annotated depiction of them through suitable visualizations. visualizations can demonstrate the operational functionality of algorithms and are designed in line with the principles of student's active learning. Various learning activities were designed and request students to apply specific search algorithms in various example cases with or without the assistance and feedback of the game. An evaluation study was conducted in real classroom conditions and revealed quite satisfactory results. The results indicate that the educational Pacman game is an effective way to enhance students' engagement and help them to deeper understand the AI search algorithms.

关键词： Educational Game Gabe-based Learning Search algorithms algorithm visualization Pacman Game Learning Efficiency

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Students Struggle with Concepts in Dijkstra's algorithm 24

Students Struggle with Concepts in Dijkstra's Algorithm

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20th Annual Conference on International Computing Education Research (ICER)

作者： Tilantera, Artturi Sorva, Juha Seppala, Otto Korhonen, Ari Aalto Univ Espoo Finland

ISBN: (纸本)9798400704758

Teachers who are aware of potential student misconceptions teach better than teachers who do not. In this article, we focus on misconceptions in the context of teaching and learning graph algorithms: we seek to discover student misconceptions about Dijkstra's shortest-path algorithm and related concepts. We observed and interviewed fourteen students who worked on a visual simulation task involving the algorithm;we qualitatively analyzed these data to explore the students' mistakes and their underlying reasons. We find, among other things, that students conflate concepts such as spanning tree, fringe, and priority queue and that students may neglect the greedy and dynamic-programming aspects of the algorithm;we also identify usability issues in the visualization tool we employed. These findings suggest that teachers and tool designers need to take great care to help students tease apart the key concepts in graph algorithms.

关键词： data structures algorithms Dijkstra's algorithm misconceptions algorithm visualization

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An Evaluation of the Effortless Approach to Build algorithm Animations with WinHIPE

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ELECTRONIC NOTES IN THEORETICAL COMPUTER SCIENCE 2007年 178卷 3-13页

作者： Urquiza-Fuentes, Jaime Angel Velazquez-Iturbide, J. Rey Juan Carlos Univ Dept Languages & Syst Mostoles Spain

The use of algorithm visualizations in computer science education is not a new thing. Although there is a firm belief that graphical representations of algorithms are learning aids, empirical studies show that what is important is what the students do with the animations rather than what they see in them. In this paper we compare to kinds of interaction: viewing animations vs constructing animations. We have conducted a controlled experiment where a group of students (n= 15) had to study an algorithm and complete a knowledge test about it and a subjective opinion questionnaire. Students were randomly divided in constructing and viewing groups. Results have been measured by means of learning outcomes, efficiency issues and student's subjective opinion. Results significantly evidence that builders obtained better results than viewers.

关键词： algorithm visualization engagement levels pedagogical evaluation

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Hypertextbooks and a Hypertextbook Authoring Environment

Hypertextbooks and a Hypertextbook Authoring Environment

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13th Annual Conference on Innovation and Technology in Computer Science Education

作者： Ross, Rockford J. Montana State Univ Dept Comp Sci Bozeman MT 59717 USA

ISBN: (纸本)9781605580784

An ITiCSE 2006 working group explored the prospect of deploying educational visualizations (e.g., algorithm visualizations) in hypertextbooks [10]. In this paper we present our continuing work on a hypertextbook project that demonstrates the viability of many of the issues raised in that workshop. The project has two thrusts: (1) the authoring of hypertextbooks for specific academic subjects, and (2) the creation of an authoring environment for prospective hypertextbook authors. The status of both is discussed in detail. It is anticipated that the success of the project as well as access to the authoring environment will inspire the creation of more active-learning hypertextbooks covering many academic subjects.

关键词： Hypertextbooks active learning algorithm visualization concept animation

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Data Encryption Standard Visual Representation 23

Data Encryption Standard Visual Representation

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20th Telecommunications Forum (TELFOR)

作者： Stanisavljevic, Zarko S. Univ Belgrade Sch Elect Engn Bulevar Kralja Aleksandra 73 Belgrade 11120 Serbia

ISBN: (纸本)9781509000555

This paper describes a method for visual representation of Data Encryption Standard (DES) algorithm. The described method was implemented in the COALA (CryptOgraphic algorithms visuaL simulAtion) system, which was developed at the School of Electrical Engineering, University of Belgrade. The COALA system is designed to help students who study Computer security course to better understand one of the core topics, i.e. cryptographic algorithms. Some major problems considering the visual representation of the DES algorithm are elaborated in the paper. The manner in which these problems were overcame in the COALA system and the specifics about the implementation of the DES algorithm are explained. At the end a short discussion on the effects of the COALA system in education and directions for future work are given.

关键词： algorithm visualization AV systems computer security DES security education

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Highway Data and Map visualizations for Educational Use 12

Highway Data and Map Visualizations for Educational Use

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43rd ACM Technical Symposium on Computer Science Education (SIGCSE 2012)

作者： Teresco, James D. Siena Coll Loudonville NY 12211 USA

ISBN: (纸本)9781450310987

It is often a challenge to find interesting and appropriate data sets to use as examples to demonstrate graph data structures and algorithms. Goals for the data are often conflicting. The data should include examples small enough to work through in a class example by hand, but some large enough to demonstrate important behaviors of a structure or algorithm. Data should be freely available in a convenient format and should have some real-world relevance. visualization of the data and results computed from it is helpful. This paper describes a collection of graph data sets generated from the Clinched Highway Mapping Project's highway data and some examples of their use in undergraduate courses on data structures and algorithms. The source data, the process used to convert the data into a more useful format, some examples of its use, and a visualization tool using the Google Maps API, are described.

关键词： Pedagogical tools Graph data structures algorithm visualization Google Maps API

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Towards a JSON-based algorithm Animation Language

Towards a JSON-based Algorithm Animation Language

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Working Conference on Software visualization (VISSOFT)

作者： Tilantera, Artturi Mariani, Giacomo Korhonen, Ari Seppala, Otto Aalto Univ Sch Sci Espoo Finland

ISBN: (纸本)9781665431446

Visual algorithm simulation (VAS) is a method used in teaching data structures and algorithms. In a VAS exercise a learner simulates the steps of an algorithm by interacting with data structure visualisations and receives feedback on the correctness of steps taken. A data format for storing VAS simulation traces would allow for later inspection of the process by instructors and researchers. In this study we describe the development of a prototype language for this purpose. The initial version was tested in a research project where the language was used for recording traces, which were later analyzed. The results were positive but also instructed some revisions in the data format and the requirements. We describe an iterative development process for extending and improving the language and the tooling. This is a work in progress: we will proceed with the data format specification, as well as further develop the technologies needed to use the data format in conjunction with VAS exercises.

关键词： algorithm visualization algorithm Animation Visual algorithm Simulation Tracing

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ANGELA: a novel approach of graphic notation based on the metaphor of road signs to facilitate the learning of programming 19

ANGELA: a novel approach of graphic notation based on the me...

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7th International Conference on Technological Ecosystems for Enhancing Multiculturality (TEEM)

作者： Schez-Sobrino, Santiago Garcia, Maria A. Gomez, Cristian Vallejo, David Lacave, Carmen Glez-Morcillo, Carlos Molina, Ana I. Albusac, Javier A. Redondo, Miguel A. Univ Castilla La Mancha Escuela Super Informat Ciudad Real Spain

ISBN: (纸本)9781450371919

Programming is a field that influences other disciplines in a transversal way, so its learning is necessary considering the emergence of new jobs that will require programming knowledge in the future. However, programming raises certain difficulties during its learning, especially in understanding programming concepts due to the high level of abstraction required. This level of abstraction can be reduced by using graphic representations that motivate the student and facilitate the understanding of certain programming concepts that arise at the beginning of the learning process. Therefore, this paper introduces ANGELA, a graphic notation based on the metaphor of roads and traffic signs that is meant to complement the learning process of beginner students who are starting to program by visualizing programs. These visualizations can be automatically generated from the source code of the programs, thanks to the modular and scalable design of the notation, and used by teachers to explain programming concepts during classes. The proposal has been evaluated with students in order to validate if the notation is appropriate to represent the concepts it tries to abstract from and if it results easy for the students to understand. Additionally, some use cases are presented in real-world scenarios in order to demonstrate the flexibility of the proposal.

关键词： Program visualization algorithm visualization programming learning augmented reality metaphors

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