Salt Lake City (and the surrounding area) holds some of the best family fun venues in the western United States. Important for me, too, is how many of them have an educational element to them. The kids don't know it or care, but Mom appreciates that even on a break from books and worksheets, they're still immersed in learning.
For the best opportunity to visit many of them affordably, can I recommend looking at the Visit Salt Lake Connect Pass? I recently contacted them to ask about how it works. Along with some great information, they sent me 2 passes to try out and then pass what I've learned on to you. Here are the details:
Available in 1-, 2-, or 3-day increments, as well as a 365-day locals pass. I calculated the price for just the 5 downtown area attractions and the pass price easily beat paying full admissions individually.
Includes discounts on admission and other perks at 13 Salt Lake & Utah County venues.
Must buy a pass for each person you plan to have visit the attraction with you.
Passes can be activated up to 90-days after purchase. Using your print-out or mobile confirmation, the pass activates at the first place you use it, at which point the purchased-time frame begins.