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时下,数学课堂教学比较平淡,比较扎实,注重实效。那么,如何拨动学生心弦,引起共鸣,激活课堂,从而使课堂教学更加活跃、更加深刻,这值得我们教师思考与探究。一、从操作中理解深刻数学中有些知识只要让学生亲自动手操作就能够探究出来。教学这类知识时,教师要大胆放手,让学生动手操作、观察比较、归纳总结。如教学“三角形三条边的关系”时,让学生通过动手操作,认识三角形的两边之和大于第三边的结论。教学时先让学生用长分别是5厘米、6厘米、10厘米的三根小棒搭成三角
Nowadays, mathematics classroom teaching relatively flat, more solid, pay attention to results. So, how to discourage students, resonate, activate the classroom, so that classroom teaching more active and more profound, it is worth our teachers to think and explore. First, understanding from the operation Some knowledge in deep mathematics can be explored just by letting the students do it manually. Teaching such knowledge, teachers should boldly let go, let students hands-on operation, observation and comparison, summarized. Such as teaching “the relationship between the three sides of the triangle ”, let the students through hands-on operation, recognize the conclusion that the sum of both sides of the triangle is greater than the third side. When teaching students first with a length of 5 cm, 6 cm, 10 cm three small sticks triangle