Reason Racer is a multiplayer game that provides students practice with the elements of argumentation. The skills of argumentation involve understanding a claim, judging the evidence about a claim, determining the reasoning applied to the claim, considering counterarguments, and making judgments. Reason Racer gives students opportunities to make judgments about scientific claims in an engaging game environment, practicing argumentation across different scenarios relevant to middle-school students. Students will need their teacher-created login to play.