Police are appealing for information after a man approached a group of children in Westmead on Wednesday.
At about 1.30pm the man approached the girls, aged between 10 and 11, in a school's grounds in Moree Street.
They said he spoke to them for a short time before walking away in a westerly direction.
The girls reported the incident to a teacher who contacted police.
Holroyd police are investigating and would like to speak to a man who may be able to assist them with their inquiries.
He is described as being of Caucasian appearance and was wearing a wide-brimmed hat, reflective sunglasses and a dark-coloured jumper.
Police are urging anyone with information about this incident to call Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page: www.police.nsw.gov.au/ .