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“计算工具的认识和使用”是人教版数学四年级(上册)第一单元(计算工具的认识、用计算器计算)的教学内容,这部分内容是在学生认识大数的基础上进行教学的。本节内容分两段安排:第一段,先认识计算工具算盘和计算器,了解计算器的基本功
“Recognition and use of computing tools ” is the teaching content of PEP 4 (the first volume) (Unit 1 understanding of computational tools, calculated by calculator), which is based on the students’ recognition of large numbers Teaching. This section is divided into two sections: the first paragraph, first understand the calculation tool abacus and calculator to understand the calculator basic skills