Being a vowel, there is more than one sound associated with the letter Aa, just to make life that bit trickier!
There are three sounds:
ah – as in ant
ae – as in ate
aaaa – as in aunt
The purpose of this poem is for children to hear the ‘a’ sound, most commonly the short sound ‘ah’ – show the child this poem as you are reading it so they can recognise the letter and start associating it with the sounds.
Most importantly have fun, it’s a nonsense poem so enjoy just repeating it. Kids love repetition and they love silliness.