what's the title of these 90's games?

I remember back in the 90's we play these games while in elementary but I absolutely forget the names of the game.

1. Bookworm - a book worm instructs you, then you will choose between a girl or a boy to play, then you will search for words you need to find or spell something but search for the word, while doing all that, some bugs will try to kill you but you have limited magical powers for a bucket of goo to apear and cement the bugs. I think there is also a math version of this game

2. Knights - you are a knight but to pass thru executioners you must answer their vocabulary or math problems correctly.

3. Mario - you are mario but you need to type words that are appearing you you may go on succesfully just like a typing game. sometimes mario swims and sharks will eat you if you dont type fast.

4. dark encyclopedia - you enter a castle with tons of doors each door there is a 19th century person asking you about history or what, I remember sometimes I encounter a jester or an old hag who looks like a witch so it's scary and places looks like a dungeon.

I wanna let my niece play these games, not those racing, figthing, shooting and killing games he's playing, he's only 6