The first summer we were here we were at the playground for a picnic nearly every day. On rainy days we went to the indoor play centres/jumpy places. And every single play group (no matter which church or centre). I did a lot of playing with our little one (who was a bit younger - 2.5) instead of watching her play, but found that I really had to take the lead and introduce her to other kids, and ask their names. I did get lucky and met a mom who had moved to the are five years prior, so knew what we were going through, and was very helpful in pointing things out. It did take that whole summer and fall, until she started nursery in January, but we got through it. Good luck!