I can't help it. I have to nominate:
Where in the World is Carmen Santiago?
Then there was this other game that was the Australian equivalent of Oregon Trail - you trekked through the Blue Mountains in a textish sort of game. Then there was this "Island" game where you could find a milkbar on a desert island
Hey, I was FORCED in year 8 in 1988 to play all of the above games! We had them in year 8 English as a school "learning supplement and extension curriculum tool"