《义务教育数学课程标准》指出:在低段数学中利用学具进行课堂教学,对优化课堂教学起着重要作用。学生通过认识学具、运用学具,以及教师适时、适量、适度地操作学具,能够改变学习数 “Compulsory education mathematics curriculum standards” pointed out: the use of learning tools in low mathematics classroom teaching, to optimize classroom teaching plays an important role. Students can change the number of learning by recognizing the learning materials, using the learning materials, and timely, proper and proper use of the learning materials by the teachers