alt Hacker NewsWe made grids of tiny dots on an eraser, so tiny a grownup couldn't really see it.
End of the year a teacher asked how we did it. He knew our answers were the same, he put us far apart, he watched us the whole time every test, the whole year.
We asked for an eraser then someone "random" would throw it then asked for it te be returned when they needed it again.
I pointed at a tiny dot on the eraser. Roughly 3x2 mm. There, that was the last test. He couldn't see it.
In late elementary school, I had an extremely large vocabulary due to the volume of reading that I did on my own free time. However, I was failing vocabulary tests, which were usually a fill-in-the blank worksheet where you were expected to regurgitate that weeks list of approved vocabulary words. The problem was that for each approved word, I knew several more appropriate synonyms.
I found that using a very sharp pencil, I could microprint the weekly word list on a piece of matte scotch tape / cellotape. Then I could put that bit of tape on the side of a white Bic pen it it would be nearly undetectable. I could normally write with the list of words facing my palm, and just rotate the pen so the list was visible when I needed it.
It's has been close to 50 years so I assume that the statute of limitations has long since expired for cheating on a 6'th grade vocabulary test. I don't feel bad about it at all, so there.