Knock Knock: A Children-oriented Vocabulary Learning Tangible User Interaction System.

Early childhood English learning is attracting growing attention. Among the different aspects of English learning: listening, speaking, reading and writing, vocabulary learning is fundamental for the following aspects. However, traditional vocabulary learning methods, such as dictionary learning or literacy-rich environment learning, are tedious and lack interaction between children and the environment. In this work, we propose Knock Knock, a children-oriented vocabulary learning tangible user interaction system. Children can learn English vocabulary with a natural and simple knock gesture using our proof-of-concept prototype. We also developed a mobile application that could augment children's learning experiences and encourage them to make more friends.