Ask HN: What YouTube channels should I let my kids watch?

I second the recommendation of https://www.youtube.com/@Numberblocks/ It's fun and has more math than what you may expect.

Also https://www.youtube.com/@TheFixiesOfficial They are cartoons, but in the middle of the story there are technical explanations that are more accurate than in the usual cartoons.

Don't let them watch YouTube/TV on their own for hours on end. Instead, set a dedicated daily slot and be with them for answering questions, providing perspective… and most importantly having fun with your kids.

None.

Numberblocks, SciShow Kids and TED-Ed