"Write a poem to him (presumably Shiva) asking for his help, and using the name you have chosen." A petition to an alien deity asking for help seems to me to constitute prayer. In my opinion this, in the privileged situation of the classroom, invites children at key stage 2 to break the first commandment.
While I am aware that, according to the national curriculum for RE, a knowledge of other religions should be made available to children, I do not consider an invitation to prayer to an alien god either necessary or indeed desirable.
Barbara Bond 103 Stanbury Road Haworth Park Hull