ODI course was developed by American Pearson Longman for five years to meet the needs of education and training in 2 1 century and the trend of digital teaching. At present, there are many children's courses, and the teaching methods are not suitable for children's learning characteristics. It emphasizes the unilateral instillation of knowledge and the learning of pure grammar vocabulary, while ignoring the children's nature of seeking knowledge and learning pleasure. Giving children a dense and serious grammar book is just as inappropriate as teaching college students with doll teaching AIDS. Even bring the adult curriculum model to the child stage; There are also some courses that do not pay attention to the importance of family review. They fully expect that two hours of classroom study every week will completely improve their children. In most cases, if there is no family review, last week's content will have been almost forgotten in class next week. This learning method can't keep up with the trend of the 2 1 century and the learning characteristics of the information age. ODI course develops children's cognitive, emotional, social and other comprehensive skills through the concept of learning is exploration, taking the theme island as a clue and English interactive activities. It integrates theme teaching, daily life situation, story teaching, value education, interdisciplinary teaching and letter spelling teaching, and provides an all-round English learning environment from classroom to home through digital means such as student interactive CD, teaching interactive whiteboard software, animated DVD and the most distinctive online game learning center!