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The Paradigm Recursion: Is It More Accessible When Introduced in Middle School?

机译:范式递归:在中学阶段引入时是否更容易访问?

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Recursion is a programming paradigm as well as a problem solving strategy thought to be very challenging to grasp for university students. This article outlines a pilot study, which expands the age range of students exposed to the concept of recursion in computer science through instruction in a series of interesting and engaging activities. In this study, a small number of students (n = 9) aged 11 to 13 years, were presented with a new and unique recursion curriculum involving hands-on experiences over a seven-week period at the University of Victoria, Canada. The curriculum was comprised of a series of progressively challenging recursion activities—roughly based upon the ideas of ‘Computer Science Unplugged’ (Bell, Witten, & Fellows, 2009)—and included programming applications with MicroWorlds EX, a programming language based on LOGO. Through this engagement, an increased number of students recognized and understood the concepts covered. We hypothesize that through experiences for youth with activities such as those outlined here, the number of students who understand fundamental computer science applications and who might potentially pursue computer science in post-secondary education will increase. We hypothesis further that through an earlier encounter of “challenging” concepts the learning and understanding of those will become easier at the university level. In this paper, the curriculum, classroom experiences, preliminary, largely descriptive and qualitative results and next steps in the research are discussed.
机译:递归既是一种编程范例,又是一种解决问题的策略,被认为对大学生而言非常具有挑战性。本文概述了一项试点研究,通过一系列有趣且引人入胜的活动的指导,扩大了接触计算机科学递归概念的学生的年龄范围。在这项研究中,向少数11至13岁的学生(n = 9)展示了一种新的独特的递归课程,其中涉及加拿大维多利亚大学在七个星期内的动手实践经验。该课程包括一系列具有挑战性的递归活动(大致基于“不插电的计算机科学”的思想(Bell,Witten和Fellows,2009年)),还包括MicroWorlds EX(基于LOGO的编程语言)的编程应用程序。通过这种参与,越来越多的学生认识并理解了所涵盖的概念。我们假设,通过针对青年人的活动(如此处概述的活动),了解基本计算机科学应用以及可能在大专学历学习计算机科学的学生人数将会增加。我们进一步假设,通过较早遇到“具有挑战性”的概念,在大学水平上对这些概念的学习和理解将变得更加容易。本文讨论了课程,课堂经验,初步的,主要是描述性和定性的结果以及研究的下一步。

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