Ok. We are just outside of Edmonton...we arrived 4 weeks ago but I grew up here...
I found this website
http://attractions.uptake.com/alberta/family.htmlIt depends on how old your kids are, mine will be 3 next month, we went to Valley Zoo last week. It is quite small so perfect for my boys to walk around but there is still plenty to do.
My nephew has just turned 14 and he enjoys the Telus World of Science - a bit too old for my 2. I personally have always loved Elk Island National Park, but I really love being outdoors so it is perfect for me and of course Jasper and Banff are always wonderful.
We are going down to Calgary at the start of July and will be going to the zoo there, my sister and nephews say it is fantastic.