The wide
variety of studies reported in both parts of this review—the current article and Kavanagh & Sneider
2007—indicate a great many scenarios and questions that curriculum developers and teachers can use to
stimulate students’ thinking about free fall, projectile motion, and orbits. Curriculum developers and
teachers will find these studies to be a gold mine of ideas, not only for monitoring students’ progress in
unraveling their misconceptions but also for sowing the seeds of doubt and discord that enable learners to
rethink their current understanding and to unravel deep-seated misconceptions so that they can develop a
fully Newtonian view of the cosmos