Nak Kanak: Journal of Child Research is a peer-reviewed journal dedicated to interchange for the results of high-quality research in all aspects of early childhood education. The journal publishes state-of-art papers in fundamental theory, experiments, and simulation, as well as applications, with a systematic proposed method, sufficient review of previous works, expanded discussion, and concise conclusion. As our commitment to the advancement of science and technology, the Nak Kanak: Journal of Child Research follows the open access policy that allows the published articles freely available online without any subscription.