If the young ones are getting restless, plan a day at Mobius Childrens Museum. With lots of interactive exhibits and displays, this attraction makes learning fun.
You'll have no end of sightseeing choices in Downtown Spokane. Mobius Children's Museum is an ideal place to begin here, but there are loads of other fine spots to enjoy. Riverfront Park, Gonzaga University, and Spokane Arena are not far from the interactive exhibit for kids and will fill in your day nicely.