Please direct them to this excellent web ressource for children:
The Children's Poetry Archive (http://www.poetryarchive.org/childrensarchive/home.do).
They will be able to take a guided "tour" of poetry (provided by a poet), read poems and hear the poets read them, as well as explore various poetic forms. To date, forty poets are included in the site and read from their work, including Fleur Adcock, Margaret Atwood, Gillian Clarke, John Heath-Stubbs, Edwin Morgan, Les Murray, and Michael Rosen.