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“小数的四则计算”是小学《数学》第七册,也是整个小学数学课的重要内容之一。它包括小数加、减法,小数乘法,小数除法共21个例题。学习这部分知识之前,学生在第四册已学习了小数的简单计算,有一定的感性认识。本册是系统地学习小数四则计算,因此在教学中应很好利用学生旧有的知识,着重帮助学生明确四则的意义,理解计算法则,掌握运算规律,并加强课堂练习,提高计算能力。下面谈点教学体会。
“The calculation of the four decimal places” is the seventh book of mathematics in primary school, and it is also one of the important contents of mathematics lesson in primary school. It includes decimal plus, subtraction, decimal multiplication, fractional division a total of 21 cases. Before learning this part of the knowledge, students in the fourth book have learned the simple calculation of the decimal, there is a certain perceptual knowledge. This book is to systematically study the decimal calculation, so in the teaching should make good use of students' old knowledge, focusing on helping students to clarify the meaning of the four, understand the rules of calculation, master the law of operation, and strengthen classroom practice and improve computing power. The following talk about teaching experience.