Birchmount Pool does a good job at amusing kids, with a big slide for older siblings and a smaller one. When we visited, the little slide had the shape of a frog, with a friendly spraying elephant nearby. There were tables by a small concession (note that I did not get the confirmation it is still there). In addition to the big pool, there’s a section for younger kids, with shallow entrance, and a large hot tub.
Birchmount Pool
Cute shallow section in this Scarborough pool