Manathil Uruthi Vendum - Bharathiyar Song

A friend of mine who teaches Tamil to small kids including mine was preparing them to sing 'Manathil Uruthi Vendum' and looking for a simple tune. I had come up with this (must have gotten into my head from some nursery rhyme! ) but was worried that all lines did not fit into the tune. However, the teacher and the kids both managed it perfectly. So thought of sharing the youtube video with lyrics in Tamil and English.