If our kids watch TV program of education/educational TV programs, it will be helpful to them about=in stimulating their brain.
They can know that=would learn on how to think, how to say, how to feel and how=to say what they feel and to imagine.
I guess their program of ducation/educational program is very special.
That program can supersede to their mom.
That program is another mom to them=can substitute their mom's learning assistance.

But on the other hands=On the other hand, maybe all actions of watching TV has=might lead to undesirable things
like bad impact about violence, swear=use of harsh words, imitation of bad deeds, adult culture and so on,
so we must supervision for=supervise them.