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学生由小学进入初中,学生的心理和生理等特征都处于转变之中。只有做好中小学数学教学的衔接工作,才能培养初中学生合理思维习惯和机敏的思维风格。 一、算术数集与有理数数集的衔接 从算术数集扩充到有理数数集,对学生来说是对事物一次认识上的飞跃。有理数数集是算术数集基础上引入负数后构成的。因此,这里关键是处理好负数的引出。 教材中,是基于小学知识中涉及到的温度和海拔高度的例子引出负数的,教师应结
Students enter junior high school from elementary school. The students’ psychological and physical characteristics are all in transition. Only by doing well in the convergence of mathematics teaching in primary and secondary schools can we train junior high school students’ reasonable thinking habits and smart thinking styles. First, the convergence of the arithmetic number set and the rational number set The expansion from the arithmetic number set to the rational number set is a leap forward for the students in the recognition of things. The rational number set is formed by introducing negative numbers on the basis of arithmetic data sets. Therefore, the key here is to handle negative numbers. In the textbook, negative examples are derived based on the temperature and altitude involved in primary school knowledge. Teachers should