The twenty-fourth JRMF Webinar took place on Saturday, September 12th, 2020 from 11 am until 12:30 pm. This virtual event was organized by Dr. Hector Rosario, Director of Outreach and Festivals of the Julia Robinson Mathematics Festival (JRMF). Participants were divided in several breakout sessions, depending on whether they were kids or adults. Dr. Jeanette Shakalli, Executive Director of FUNDAPROMAT, acted as the co-moderator in one of the breakout sessions for adults.
On this twenty-fourth Webinar, participants explored the interesting math activity called “9 Dots” which is used in Festivals all around the world. In this interactive activity, we start with 9 dots in a straight line. In this game for 2 people, the players take turns crossing out dots. When it is their turn, each player has to decide to cross out one dot or two consecutive dots. The winner is the player who crosses out the last dot. The activity is based on finding the winning strategy for this game and then analyzing variations of the game.