Gardeners and Cinema Tickets: High School Students' Preconceptions of Concurrency
Gardeners and Cinema Tickets: High School Students' Preconceptions of Concurrency
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园丁和电影票：高中生对并发的偏见
DOI：
10.1076/csed.11.3.221.3831
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发表时间：
2001
影响因子：
2.7
通讯作者：
Y. Kolikant
中科院分区：
文献类型：
--
作者：
Y. Kolikant
我们正在为高中生开发一门并发课程。该课程正在根据从教师和学生那里收到的反馈意见分阶段进行完善。我们发现学生在理解基本概念方面一直存在困难，这导致我们调查了他们对并发性的先入为主的概念。本文描述了这项调查的结果。这项工作以建构主义为基础，强调了建立新知识的先验知识的重要性。学生们被要求解决并发问题，在课程之前和学习了该学科的基础知识之后都是如此。对解决方案的分析表明，学生：(A)发现按行动顺序解决问题比按关键部分解决问题更自然；(B)对集中和分散解决方案的偏好存在分歧；(C)使用不适当的启发式方法；(D)在工作时发明计算模型；(E)在不存在并行性的情况下将其归因于并行性；(F)将智能归因于系统。基于这些发现，我们能够修改课程以解决这些先前知识的问题。
We are developing a course in concurrency for high school students. The course is being developed in phases of refinement on the basis of feedback received from teachers and students. We have found persistent difficulties that students have in understanding fundamental concepts, which has led us to investigate their preconceptions of concurrency. This paper describes the results of this investigation. The work is anchored in constructivism, which stresses the importance of prior knowledge upon which new knowledge is built. The students were asked to solve concurrency problems, both prior to the course and after learning just the basics of the subject. Analysis of solutions reveals that students: (a) find that solving a problem on the order of actions is more natural than the critical section problem, (b) are divided in their preference for centralized and decentralized solutions, (c) employ inappropriate heuristics, (d) invent computational models as they work, (e) attribute parallelism where it does not exist, (f) attribute intelligence to systems. Based on these findings, we were able to modify the course to address these problems of prior knowledge.