If they’re in primary school, start them off on Odd Squad.
It’s a madcap Canadian TVO Kids (TV Ontario) public broadcaster educational math show that was made with partner funding from PBS in the United States, and is now available online in many other countries.
The creators and writers clearly knew and referenced Star Trek.
I was getting gas 6-7 years ago. The attendant pointed at my Strong Bad decal and got all excited because he used to sit on his dad's lap and watch them on the computer.