It looks like LOTS of fun but it's very expensive. Also, my family and I will only have 2.5-3 days in DC. And my children are 3 and 1 so it's not like I can jam pack the days.
Skip it as there are so many other nice things to do? We are definitely planning to take them to the Postal Museum and American History museum. Possibly thinking about the zoo and the Air and Space museum.
The National Children's Museum in DC is designed for young children and offers highly interactive, hands-on exhibits that can be very engaging for toddlers and preschoolers. It is indeed fun, with activities that allow kids to explore science, technology, engineering, arts, and math in a playful way. However, considering the ages of your children (3 and 1) and the short duration of your trip, there are some practical considerations.
Points to consider:
Alternative suggestions that are toddler-friendly and free or low-cost:
Overall, while the National Children's Museum is enjoyable, with such a short visit and very young children, it may be more practical to prioritize free Smithsonian museums and the zoo, which offer a richer variety of experiences, iconic DC sights, and are easier to manage with strollers. You can always leave the children’s museum for a future trip when your kids are slightly older and can get more out of it.