社会建构主义观下的算法教学——谈算法的“多样化”与“优化”

Arithmetic teaching under social constructivism——Algorithmic "diversification" and "optimization"

算法“多样化”的本质是促进学生的独立思考,算法“优化”的本质是促进学生对算法本质的理解,两者是辨证统一的关系。因此,算法教学既要教算法的“多样化”,也要教算法的“优化”。算法教学可以按照以下程序进行:创设问题情境(应用)———鼓励算法的“多样化”———组织讨论和交流(算理教学)———优化算法———应用。

The essence of algorithmic ＂diversification＂ is to promote students to think independently. The essence of algorithmic ＂optimization＂ is to promote students understand the essence of arithmetic. The relation between algorithmic ＂diversification＂ and algorithmic ＂optimization＂ is dialectical unity. So arithmetic teaching should not only teach algorithmic ＂diversification＂ hut also teach algorithmic ＂optimization＂. The process of arithmetic teaching is as following： create question surroundings（application） encourage algorithmic ＂diversification＂ organise discussion and communion（ optimize arithmetic ） application.