Karen is a senior preschool education expert in Australia. He has more than 20 years of teaching experience. He is good at teaching early childhood development courses. This course has a lot of important theoretical content. It is necessary to understand the laws of children’s development and to achieve a certain development at a certain age, which includes physical, social, emotional, cognitive, language development content and child development milestones. Once led the preschool education student group of Melbourne Polytechnic to visit Beijing Qiushi Vocational School, Beijing Economic Management Vocational College, Beijing Business School, etc.