There are quite a few museums, big recreation and sport centers in Tucson area where you can take your kid. To name a few:
The JCC offers a number of programs and sport classes, day care, and summer camps, as well as many other activities for kids. More info at:
All of you probably know the YMCA. There are a few locations in Tucson. You can find them on the YMCA site:
3. Parks and recreation department
The Tucson parks and recreation department (it includes the Tucson Zoo) also offers a huge amount of programs for kids. You can find their info at:
4. Tucson Children's museum
The Tucson Children's museum may not be that big and is, to tell you the truth, somewhat primitive, but it's a good place to spend a hot summer day once in a while. Their info:
5) Arizona - Sonora Desert Museum
It offers many different programs for kids of all ages. They even have "Toddlers' Tuesdays"! The only minus is the location: it's a 25-30 min., drive from the center of Broadway St.
6) The Mini Time Machine Museum of Miniatures
Take your kids to see the museum collection of over 275 miniature houses, fairy castles, room boxes, and other miniatures. Museum also offers Kids Create Program for kids and more.