In pictures: Children discover Delhi's wonders

Sheikh Mijanur Ali is from Sunderbans in the state of West Bengal. A former child labourer, he has now been put in school after a local NGO intervened.

He walks 2km to get to school. Until recently, Ali used to catch tiger prawns. "I used to stand in waist-deep water for hours." That fetched him 30 to 40 rupees a day.

Ali said he liked school and wanted a job in a textile factory.