Hi K.,
Check out the Apex Center - it's a North Jeffco Rec Center, and it is SO nice. A family membership is really affordable, and includes free FUN childcare where your kids will love to play, a full schedule of classes, and a super pool that your kids will love for sure. We go almost every day either to swim or work out, and I trust the child care center with my 6 month old, 2 year old and 7 year old. The best part is, the classes are very professional and effective, and the kids look forward to going! Here's a link:
http://www.northjeffco.org/facilities/apex/
Good luck!