基于计算思维的计算机表达式教学方法实践

Practice of Computer Expression Teaching Method Based on Computational Thinking

针对计算机表达式教学中普遍存在重知识轻运用,甚至有些教材中有违反计算机编译原理等问题,提出按照运算符的优先级、结合律以及运算符中操作数的顺序确定运算符的执行顺序和按照运算符的语义在冯·诺依曼机上逐个计算表达式中运算符的两步教学方法。学生在运用该方法的过程中,学习数据类型、变量和运算符等相关的知识和技术,培养其程序流程的编程思维方式,真正落实CDIO工程教育思想中"做中学"和"基于项目教育和学习"的方针,培养学生的"计算思维"能力。

According to ignoring knowledge application, even violating compilation principle of computer about teaching programming expression, puts forward two steps teaching method. According to operator priority, associative property, and the sequential of operation number in the two sides of the operator, we can determine the order of executing operator and calculating expressions one by one in the John von Neu- mann machine. Applies this method, students are going to lean the knowledge and technologies about data types, variables and operators, and it is going to train way of programming thinking. It really implements the policy of CDIO engineering education thinking of learning by doing and educating and learning in project, and trains the ability of Computational Thinking.