These challenges are based on legacy TCEA Arena Contest Rules. Each challenge requires the Race for Time mat (available for purchase here) and various small game pieces from previous years challenges that can be easily purchased, such as dice, checkers, and LEGO bricks.Teachers can use these challenges to help students work towards a clear objective and then optimize their robot and code for time and reliability. Each challenge can take 1 45 minute session to complete then another 1 or 2 sessi