[i][b][size=85]In this frictionless fantasy microworld, Aristotle and Newton are racing their cars around a track. [br][br]Since each of them has his own idea about how velocity and force are related their cars behave differently. [br][br]Can you figure our how each thinks about motion? Which theory more closely approximates how your students think about motion?[br][br]How can you use this applet to help students with misconceptions about motion?[br][/size][/b][/i][size=85][i][b][br][/b][/i][b][i]Time moves in discrete steps in this microworld. From your perspective as a teacher, is that an advantage or a disadvantage?[/i][/b][/size]