Fundamental motor skills (e.g., run, jump, catch, and throw) are essential building blocks for more advanced and context-specific skills. Children with these motor skills are able to function independently while learning and exploring their environment. The National Association for Sport and Physical Education (NASPE) "Active Start" guidelines also support the importance of fundamental motor skills early in life. Mastery motivational climate (MMC) is an instructional approach based on achievement motivation theory. An essential tenet is that individuals participate in achievement contexts such as academics, sport, and physical education to demonstrate their competence or ability. MMC promotes achievement behavior in learners of all ages. Other research exhibiting large effect sizes, has indicated that MMC leads to psychological benefits. The current study expands on the work of Robinson and colleagues (Robinson & Goodway, 2009; Robinson et al., 2009). The researchers investigated the effects of two motor skills programs, mastery climate and low autonomy (i.e., characterized by teacher control and direction over organization and decisions in which students follow the guidance and directions; Rink, 2006), and a free-play, unplanned recess (control group) on object control (OC) skill development and perceived physical competence (PPC) in preschool-age children. This study examined the effects of an MMC motor skill intervention on OC skills and PPC in preschoolers who served as the control group for a previous study (Robinson & Goodway, 2009; Robinson et al., 2009). (Contains 1 figure and 1 table.)