I had a math class with third graders of which we discussed money I told them about virtual and real money of which I was very shocked and happy that they had knowledge about Bitcoin.
However we ended the class after we had spoken alot about Bitcoin they were soo happy and loved the class also
Like wow being with the kids was a nice time for them and I to get to know Bitcoin better look forward to having a class with them next week
I'm not really sure of the whole story you're telling and also doubt what benefit they will get from your class third graders are young enough to understand bitcoin and my assumption is they listen to bitcoin from YouTube and Tiktok channels and I'm also sure they never listen to the video in its entirety. The age of class III students ranges from 7-8 years for Elementary School (SD) and 14-15 for Junior High School (SMP) and 16-17 for Senior High School (SMA). Assuming that age, it is almost certain that they cannot see any opportunities in bitcoin, because it is not the time for them to think about money in the learning process in formal schools.
But for ordinary classes explaining that bitcoin is a virtual currency is not a problem, because this is the first educational step for them to know what bitcoin is. But to get involved as far as investing and trading this is not the time for them. At least knowing about bitcoin is enough at this stage for them and later they can continue to find out more after college (University).