Just returned from chennai museum - as some one told me about a 10th AD Rama there ( but turned out to be 14th- as per the board) ( Thanks to Vj - can now differentiate nardana krishna vs sambandar)
Good crowd. Many children and parents going thorugh various artefacts.
If summeer classes ( in association with such museums) are conductedmay be helpful.
Like heritage walks, can take children to heritage sites within 20 Km locality.