step by step procedure meaning in English

逐步逼近法

Based on the following basic features : free interaclion , practice , step by step procedures and openess , the essay puts forward teaching of practice , teaching of simulated ituations and teaching of cooperation in groups , taking practical types of extracurricular activities into account
这些问题亟待研究解决。本文根据初中数学活动课的自主性、实践性、系统性、开放性几个基本特征，结合实际课型，提出实践教学、情境教学、分组合作教学。