My boys (and I) really liked the “Little Einsteins”. I think its the most educational children’s cartoon I’ve seen but its also cute and age appropriate.

my son used to watch “the day henry met” and each episode was learning about something different. there was a train episode, one about music, and animals. it’s a great show, goes for 5 mins.

Noddy toyland detective is good and we like curious george because he’s always investigating things, peg plus cat and numtums, dinosaur train is great too. Kids ages 6.5 years, 5 years and 18 months.

Shaun the sheep is my favourite my little man (20 months) giggle and hoot and peppa pig, my 6 year old loves Ben and Holly’s little kingdom and PJ masks.

Apologies, I just realised you said cartoons. Andy’s Prehistoric Adventures isn’t a cartoon.
Messy goes to Okido is a good cartoon that is educational. Each episode starts with a question Messy has and they spend the episode working out the answer. Again, it has a catchy theme tune though. Lol

Andy’s “Previcstoric” (as my son says) Adventures is a good one. My two and four year olds both love it. Be warned though, the theme song will get stuck in your head.

I will add “My little Pony” “Adventure Time” and “Lego Friends”. But for older kids.

My daughter loves Alvin and the Chipmunks, the Wiggles and Paw Patrol and her favourite movie is Over the Hedge. She is 15 months old!

My daughter used to love the show “Arthur” and there was always a good moral to the story.

Maybe you should write down the age of your kids. When my daughter was young she loved “Dora the Explorer” and “Diego”. Growing up “Scooby Doo”.