My childhood in the 90s/early 00s was chock full of them!
Reader Rabbit, Math Blaster, Carmen Sandiego, Dr. Brain, Sesame Street, Magic School Bus are some of the main ones that come to mind.
Freddy Fish and Putt-Putt feel like they may have had an educational component, the same studio had an edutainment game where you learn all about how airports work.
While not marketed as educational games, the impressions games (Caesar, Pharaoh, Zeus: Master of Olympus), Civilization, and Age of Empires/Mythology taught young me a lot about history.
The very first computer we got, an Acer Aspire running Windows 95, included a software bundle. One of those was Novell “Read with me 1&2” and “Memphis Math” The former was a series of mini/microgames to learn basic spelling and counting, the latter had 6 year old me struggling to grasp fractions (and eventually starting to figure it out before it was covered in school)
The Eyewitness encyclopedia / educational games were really cool too.
Mavis Beacon Teaches Typing had a bunch of minigames that got me the fast fingers I have today