在小学数学教学的课堂练习中,学生的计算速度和思维速度往往太慢,不少教师对此想了许多办法,效果也不见佳。是何原因呢? 我们通过心理学的学习,发现其中原因之一,是人的思维活动和手的书写动作之间,存在着不相容性。手的缓慢而机械的书写动作,不但远远赶不上瞬息千里的思维活动,而且会拖住思维的后腿。可见,在课内练习时,长期让学生缓 In the classroom practice of primary mathematics teaching, the calculation speed and thinking speed of students are often too slow, many teachers think of many ways, the effect is not good. What is the reason? We learn through psychology and found that one of the reasons is that there is incompatibility between human thinking activities and hand writing. The slow and mechanical handwriting of the hand not only can not keep up with the twists and turns of thinking activities, but also hides the hind legs of thinking. Can be seen in the class practice, long-term students to slow