Jay and Jonathan investigate how their starting hand position on the ball affects scoring from the free-throw line. Mary Jane and Eliza investigate the physics behind carnival games to increase their chances of winning and engineer Katie Broughton designs and builds motorized toys that mimic real-life motion.Lara wants to know how she and her fifth-grade friends can gain a competitive advantage against the older kids at YMCA camp.

Originally released by Big Media Holdings LLC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on February 10, 2017.

Basketball (6:06); --Carnival (5:18); -- Scientist: Katie (1:59); -- Tug-o-War (6:04); -- Credits: Science of Sports: Dragon Fly TV (0:50);.