Hey, I remember watching this fantasy cartoon when I was really young, it would have to be either late 80's or very early 90's...
It was about a bunch of kids who go into an amusement park and end up in a fantasy land, and there they each has a special weapon. They were fighting a dark skeleton like bad dude. And they had a Teacher who was a little Yoda-like guy who always disappeared mysteriously behind rocks :) And also the Skeleton dude wanted to take their weapons to use them to fight a Great Red Dragon or something.
Would appreciate if someone knows the name
Thanks guys

I believe you are looking for Dungeons & Dragons. Dungeons & Dragons - TV.com (http://www.tv.com/shows/dungeons-and-dragons/)

It was aired in the early to mid 80's. Great show based on a fun game.