My two children are a similar age toy yours and there's always loads to do in resort.
The Turks are really good with kids and spoil them rotten with attention.
A place we went to last year was called lion bar (I think) and was in the centre going down towards the beach on the right.
Was a great place.massive inflatables and slides,swings the lot.
Another place that was good was
icmeler bar(again,I think) which had crazy golf and a play area.this was near love star going toward the old town and wembley bar.
Hope you and the family enjoy the holiday.sure you will