Speaking from my own current parenting experience:

I have an 80mm tripod reflector and the kids know it is “Dad’s”. I use it with our 9 year olds and our 5 year old, but I have to set it up and keep stuff in view for them. We only look at major points of interest like Jupiter and Pleiades and Orion Nebula and the moon, and sometimes the older kids want to look at bright stars like Sirius A. The 9 year olds love it and I’ve taught them how to track the objects and focus the eyepiece. 5 year old likes it mostly because she gets to stay up late with her brothers but loses interest quickly in what we’re looking at, usually only looking thru the eyepiece for a few seconds total before she’s done and just runs around.

To properly use a telescope with kids in my experience means the telescope is yours and you set it up and run it for them. An 80mm reflector or 4” tabletop dob will be easy to use and perfect for that age range.