Before the game started, I explained to the students that they would pick a ball 20 times. I said that, for ethical reasons, they could not cheat. While they were picking, students wrote the picked color on a table. When we were done, students, on their own, multiplied the number of green balls by 16 and the number of red balls by 8. While checking on the groups, I saw that some had already calculated the money they had to pay. During the activity, I was asking, “Who do you think will win this game?” “Do you think it’s a matter of luck?” Most of them said, after the game was over, it was a matter of luck. But a student replied saying that it had to do with statistics. Some students, influenced by this answer,said it was a matter of statistics, but they probably didn’t even know what it meant. Many of them had doubts, saying they still believed it was a matter of luck. This happened on the first round, and I obviously lost, once the students had chosen the R$ 8-balls. So I said:“Let’s play again. Who do you think will win this time? Do I have chances to win?” The students said that I did have chances to win. I asked: “Do you believe it?” Students said “Yes” and justified by saying it was a matter of luck. So I said, “Let’s play then.”