A real need exists for television producers to develop media that provide educational benefits and suitable for young Thai viewers. Careful research should be utilized in the production process to make sure that the viewers learn from the media and transfer the knowledge in to the classroom as well as in their daily lives. This paper presents topics of literature review about children’s educational media, knowledge transfer, and sociomathematical norms. Then it provides a background to Thai children’s media and a design of math educational animation series for Thai elementary students. The design includes: characters design, setting, and plot.