There are many types of poems.  KS1 children are introduced to poetry and shown how to write a poem.  The Literacy Framework requires children to focus on poetry right up to KS2, Year 6.  Using a writing frame can help children write poems by themselves.  Some poems have rhyming words, others don't.

KS1 / KS2 English Worksheets for children.  
This poetry worksheet has an alternative version of the nursery rhyme - Little Miss Muffet.  Children will write a poem by changed some of the lines or words.  They will write their own version of this nursery rhyme, remembering to use rhyming words.