数学离不开解题.在课堂教学中,教师呈现给学生的往往是经过深思熟虑和严密组织的解题演示,是一种静态的解题呈现.实际上,教师在课前准备的思维过程是动态的,有一个不断反思、不断调整的过程.而对于学生,经常一道题这次错下次还错;上次不会做,学过了仍然不得要领,答非所问.种种 Mathematics is inseparable from problem-solving. In classroom teaching, teachers present to students are often well-thought-out and tightly organized problem-solving demos. It is a static problem-solving presentation. In fact, the thinking process of teachers’ preparation before class is Dynamic, there is a process of constant reflection and constant adjustment. For students, the question is always wrong. The next time it is wrong, the last time it will not be done, but after learning it, it is still unnecessary to answer the questions.