It's too bad you younger folk got to only see this stuff secondhand. Back in the 70's when ABC ran cartoons on Saturday morning, one of these cartoons would sneak in between shows.
So even if the latest incarnation of Scooby/Scrappy Doo was garbage, you still got 5 minutes of gold with these segments.
Grammar, math, history, science, we were covered!
My own favorites leaned towards grammar: "Interjections!", "Pack Up Your Adjectives" and the signature "Conjunction Junction, What's Your Function?".
Good stuff.