A professional team of kindergarten teachers can guarantee the high-quality development of preschool education. In the process of professional development of kindergarten teachers, their professional development in different dimensions can usually be manifested in educational practice, which is related to the quality of kindergarten education and the development of children. Therefore, this paper first analyzes the current situation of the professional development of teachers in public kindergartens, points out the problems existing in the professional development of teachers, and hopes to promote kindergarten teachers to continuously improve their professional abilities and realize the sustainable development of the education team by exploring the path of professional development and training of teachers.

The purpose of this paper is to discuss the innovative research on the instructional design and development of courses based on digital platforms. Firstly, the importance of digital platforms in the field of education and the current status of their application are introduced. Secondly, the concepts and key elements of course instructional design and development are analysed, and the role of digital platforms in course instructional design and development is discussed. Then, the innovative practices and methods of course instructional design and development based on digital platforms are described, including the integration and personalised customisation of learning resources, the construction and interactive communication of learning communities, and the improvement of evaluation and feedback.