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三重驱动模式下程序设计实践能力的培养与提升_黄宏博

三重驱动模式下程序设计实践能力的培养与提升_黄宏博
三重驱动模式下程序设计实践能力的培养与提升_黄宏博

2015年18期

教育实践

高教学刊

Journal of Higher Education

三重驱动模式下程序设计实践能力的培养与提升*

黄宏博

(北京信息科技大学计算中心,

北京100192)引言

在社会信息化不断深化的背景下,用计算机解决实际问题的能力是高校人才培养中的一项重要衡量指标。我国高校的人才培养方案一般依据教育部高等学校教学指导委员会的要求,开设有计算机基础及程序设计类课程,这些课程为国内众多高校学生的计算机基本技能的培养起到了重要作用。但是,在程序设计类课程的教学实践中仍然存在一些问题,其中亟待改进的一个突出问题表现在学生在学完这些课程后仍然难以动手编程来解决实际问题,无法把课本中学到的知识与实际要解决的问题结合起来。

导致这种现象的突出原因是教学与实践的分离。一方面,知识和方法的讲解中缺少实例背景,很多方法都是照本宣科,缺少问题导向,学生无法了解方法的来龙去脉,因而难以真正把方法学以致用。另一方面,实践教学中缺乏分析问题、提炼模型的训练,学生只会把课堂例子照搬到实验题目上来,遇到变化就不知如何应对。这种教学模式下培养出的学生就像我们常说的“书虫”、“书呆子”,无法满足经济社会发展需要的高素质人才的目标,因而教学方法亟需改革。

本文在广泛调研的基础上,结合国内高校高素质人才培养目标和特点,提出通过课堂教学实例驱动、实验教学任务驱动、考核方法目标驱动三位一体的驱动模式,以改进教学方法和教学模式,培养和提升学生程序设计的实践能力。

一、三重驱动模式的实践能力培养方法

案例、任务驱动教学法是建立在建构主义学习理论上的教学法[1],它将以传授为主的传统教学理念转变为以解决问题、完成任务为主的多维互动式的教学理念;将再现式教学转变为探究式学习,使学生处于积极的学习状态,激励学生根据自己对当前问题的分析,运用已有知识提出方案、解决问题。目标驱动教学法也是建立在建构主义理论上的教学方法,学生通过完成教师布置的任务,将自己所学的知识与技能真正内化。学生学习的过程就是根据设定的目标不断提出问题、解决问题的过程。这种教学法能

为学生提供体验实践的情境和感悟问题的情境,围绕任务和案例

展开学习,以任务的完成结果为目标来检验和总结学习过程等,使学生主动建构探究、实践、思考、运用、解决、检验的学习体系[2]。

本文主要研究以实例驱动改进课堂教学、任务驱动改进实验教学、目标驱动改进考核方法的三位一体的三重驱动模式下课程教学方法,更新教学方式和教学模式,培养和提升学生程序设计学习中分析和提炼问题、构建解决方案和编程解决问题的实践能力。

(一)实例驱动的课堂教学方法

传统的课堂教学是知识传授式的,是以教师为主体的授课方式。这种模式下学生学习的主动性得不到充分发挥,对于课堂知识的传递是以教师讲授为主体的,缺乏对学生理解和接受效果的进一步关注。在学习的过程中,学生才是认知学习的主体,学习的本质应该是以主体的感知和效果来评价的。实例驱动教学法以解决实际问题、完成实际案例为主进行多维互动式的教学,把课堂讲授由知识再现转变为探究式学习,使学生处于积极的学习状态,充分调动学生的思考和创造能力,使学生主动建构自己的知识经验,通过原有知识经验和新知识的相互作用,充实和丰富自身的知识和能力[3]。

(二)任务驱动的实验教学方法

程序设计是实践性很强的一门课程,实验教学的效果直接关系到课程总体的学习效果,也会直接影响学生解决实际问题能力的培养。目前大多高校的程序设计课程实验还是以教材例题的类似题目编程为主,从某种程度来说,实验教学成了课堂教学的简单延续。实验题目与实际问题的脱离,导致学生难以在实验过程中培养和训练出实际问题分析、提炼以及建模等能力。任务驱动的实验教学,就是以软件项目开发中遇到的实际问题为任务,引导学生从最开始的分析提炼入手,训练学生建立模型、设计算法、编程实现,一直到调试实施、运行检验等整个过程的实践能力。把知识点的学习和实践能力的锻炼融入在任务实施的过程中,通过与实际问题直接相关的任务驱动方式促进实践教学质量

要:针对高校程序设计教学中实践训练较为薄弱的现象,

提出了三重驱动模式教学法,以案例驱动改进课堂教学、任务驱动改进实验教学、目标驱动改进考核方法。实践表明,本文提出的教学法在程序设计类课程中具有很好的可

操作性,明显改进了教学效果,提升了学生的动手编程能力。

关键词:案例教学;任务驱动;程序设计;教学改革中图分类号:G642文献标志码:A 文章编号:2096-000X (2015)18-0230-02Abstract :To promote the practical programing teaching in colleges,this paper presents a new teaching approach called Triple-driven Teaching Mode.The approach tries to improve class teaching by case-driven method,improve prac -tical teaching by task-driven method and finally improve assessment by target-driven method.Practice shows that the presented approach has a good operability in programming courses and able to significantly improve the effect of teach -ing and enhance the students'practical programming skills.

Keywords :case-driven teaching method;task-driven teaching method;program design;teaching reform

*基金项目:北京信息科技大学课程建设———

教学方式方法改革项目(2015KGYB56,2015KGYB59),北京信息科技大学教改项目(2015JGZD05)

2015年18期

教育实践

高教学刊

Journal of Higher Education

的提高。

(三)目标驱动的考核方法

程序设计教学的根本目标是让学生学会编程解决实际问题,课程考核的最终目的是检验学生程序设计能力的水平。传统的考核方法以闭卷答题为主,这实际上是以考核学生知识点的记忆为主,对于程序设计能力的检验则相对薄弱。本文尝试改进课程的考核方法。把课程考核分为试卷成绩、平时成绩和实践成绩三个部分。实践成绩的评分方法是通过把课程教学的目标分解为一些可量化的目标点,把目标点融合进一个课程大任务中去,大任务以分组形式分配给学生,最后以程序验证和答辩的形式给出该组的分数。

二、三重驱动模式教学法对实施的要求三重驱动模式教学法尝试以实例教学改进课堂讲授模式,

以任务驱动改进实践教学内容,以目标驱动改进课程考核方式,使课堂教学、实践训练和考核评价三个重要的教学环节相互作

用、相互影响,共同促进学生通过教学达到建构知识、培养技能的

目标。为达到最好的实施效果,在实际执行中,对于课堂上讲授的

实例和实践中选取的任务等内容和形式却有着非常高的要求。具体来说,实例和任务的选择需要满足以下几点要求。

(一)难度和规模要适度按照学习理论的研究成果,学生在学习时的专注力是有时间限制的,在一定时间内可以有较高的专注水平,超过一定时间长度后则会有大幅度的下降。因此,课堂讲授时选取的实例应该在一个合理的时间内讲解完毕,一般不宜超过10分钟。实践环节中的任务选取也有类似问题,过长的思考和编程实现时间会影响学生的学习情绪。因此,实例和任务的选择从难度和规模上来说都要适当,便于在课堂和实践环节中在一个合理的时间段内顺利

完成。(二)内容上贴近实际实例和任务的选取不仅关系到学习的主动性和课堂的趣味性,也需要体现学以致用的基本思想,便于训练学生从实际问题中分析归纳抽象出模型进而利用已有知识逐步解决的能力。很多教材上的实例过于抽象化,缺乏生动性,有的甚至更像是数学题目,这些实例的训练缺乏从实际问题中归纳出模型的环节,编程能力的训练不够全面。事实上,学生身边有很多鲜活的实例,教学上以这些实例为内容展开,更有利于营造轻松自由的学习环境,激发学生的学习欲望,起到事半功倍的教学效果。

(三)层次上循序渐进

循序渐进的学习方式符合学习理论的认知机理,人们对客观事物的认识本来就是一个由简到繁的过程,能力的养成也存在阶段性变化,受人体生理基本机能的制约。因此,在实例和任务的选择上也要遵循这一基本认知机理,从实例和任务的内容、方法的难度、负荷的大小等方面由易到难、由简到繁、逐步深化的步骤来顺序安排,才便于学生系统地掌握程序设计的基础知识、理解程序设计语言的基本语法、培养和锻炼程序设计的基本技能。

(四)结构上便于分块

在实践环节中的任务,经常需要一个小组协作完成,尤其到了课程后期综合性较高的任务,需要小组内部的合作就更为明

显,因此,在任务选择上应该尽量选取那些结构上便于分解、便于模块化的案例,以便小组内部合理分工、协作完成。便于分块的实例和任务结构在目标驱动的效果评价中,也便于客观公正的给出评价成绩。

三、结束语本文通过综合实例驱动的课堂教学、任务驱动的实验教学和目标驱动的考核方法,形成三重驱动模式下的程序设计教学方法,通过强化实践教学、突出能力培养的方式,扭转学生课程完成后仍然不会编程的现象,培养学生的信息素养,训练学生的计算思维,提升学生用计算机解决实际问题的能力。实践表明,本文提出的教学方法能显著提高学生的学习积极性和主动性,强化计算思维的培养,对于实践能力的提升具有显著效果。

参考文献[1]张可新.案例教学与任务驱动教学法在计算机教学中的实践[J].

中国管理信息化,2012(18):117.

[2]苏丽冰.任务驱动教学法在计算机基础教学中的应用[J].中国信息技术教育,2012,32(18):14-14.[3]陈琦,张建伟.建构主义与教学改革[J].教育研究与实验,1998(3):46-50.中,避免在办学过程中可能出现的问题,逐渐形成“厚基础、宽口径、高素质、会实践”的管理类学科的专业特色。首先,每个专业都制定出相应的培养目标,以培养目标为基础制定出具有针对性的课程体系,基本上可以确定开设的课程。然后,以学业的整体情况为前提,整合开设的课程。

(一)划分课程

在课程群的建设过程中,课程群的组织划分是必不可少的。在课程的划分方面,通常是将内容比较相似或者联系密切的课程划分在一个课程群内,另外,课程的内容、相关度、性质、现有资源等因素也是在具体实施的过程中必须要考虑的。

(二)划分人员

课程建设团队的形成,一般都是由负责承担同一课程群课程的教师,这些教师都来自与课程群有关的研究领域,这些人聚在一起可以充分讨论科研以及教学内容。

(三)选拔课程群的负责人

在选拔课程群负责人的过程中要以以下条件作为标准:有一定职业道德的一线教师,有一定教学能力,能够精心进行课程设计,对教学研究有足够的热情;拥有强烈的责任心以及管理组

织能力;在教学水平和学术造诣方面有良好的表现;具有副教授的职称或者做讲师时间达5年以上。

四、结束语

在新形势的教育环境下,建设课程群能够有效地促进高等

教育的发展。通过对教学的探索与实践,逐步完善课程群建设,使之在专业建设和课程建设之间的连接作用得到充分的发挥,在解决好高校实行扩招后出现的教学资源不足的问题的同时,以课程群为基础进行教学团队和课程的建设,从而培养出更多高素质的人才。

参考文献

[1]张丽萍,

刘东升,林民.“课程群”教学管理体系的建设与实践[J].内蒙古师范大学学报(教育科学版),2013,3:61-64.[2]贺小贤,丁勇,王丽红,等.基于生物工程专业课程群教学团队建设与实践[J].中国科教创新导刊,2010,28:132-133.[3]王艳芬,张晓光,王刚,等.电子信息类专业信号处理课程群的建设与改革实践[J].实验技术与管理,2015,4:11-14.[4]高丽菲.从“碎片化”到“全程化”:技工院校教学监控研究[D].西北农林科技大学,2014.[5]马磊.“纺织之光”2013年度中国纺织工业联合会纺织教育教学成果一等奖获奖成果巡礼(一)[J].纺织导报,2014,6:161-164.

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2019-2020学年高中英语人教版必修四习题:Unit 1课下能力提升二 Word版含答案

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人教版高中英语必修3练习:Unit 3 课下能力提升(九) (含解析)

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《面向对象程序设计》实验指导书

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