There is now a number of video clips, with English voice-over and captions, that explains the Tenrikyo teachings specifically aimed for children. These are translations of a much larger library of video clips created by the Tenrikyo Boys and Girls Association.
Here is the link to the playlist of videos on their Youtube channel.
Teachings Explained (English version)
Please take a look and make use of this wonderful resource that TBGA has made available for us, so that we can convey the teachings to the next generation!