Abstract
This article focuses on the research of teaching strategy optimization based on cognitive development theory. Firstly, the core viewpoints of cognitive development theory were expounded, including Piaget's theory of cognitive development stages and Vygotsky's theory of social and cultural cognitive development, etc. Then, the problems existing in the current teaching strategies were analyzed, such as ignoring the differences in students' cognitive development stages and lacking guidance on students' cognitive construction. On this basis, the specific methods for optimizing teaching strategies based on cognitive development theory were discussed in detail, covering aspects such as designing teaching according to different cognitive stages, promoting students' cognitive construction, and using social and cultural factors to drive cognitive development. Finally, the safeguard measures and effect evaluation methods in the implementation process of optimizing teaching strategies are expounded, aiming to provide useful references for educational and teaching practices.

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