计算题的教学内容单一 ,难度也不是很大 ,在学习中大部分学生不会有什么困难 ,于是在课堂上容易给人很枯燥单调的感觉 ,学生往往积极性不高 ,甚至产生厌学的情绪 ,新授课如处理不好况且如此 ,练习课就很容易使情况更糟糕。针对这种情况我在准备计算题练习课的时候就努力创设能 Computation of a single teaching content, the difficulty is not great, most students in learning will not have any difficulty, so easily in the classroom gives a very dull feeling, students are often not motivated, or even produce tired of emotions If the new class is not handled properly, practice class can easily make the situation worse. In this case, I worked hard to create a canonical calculator