Unleash your inner engineer with the FAO Schwarz Thunder Gears Build-A-Coaster STEM toy! This impressive 736-piece construction set allows you to build a thrilling, motorized roller coaster that stands nearly 3 feet (91 cm) tall. Designed for ages 8+, it features motorized continuous motion to propel the coaster cart through exhilarating loops and drops. Perfect for fostering creativity, problem-solving skills, and an understanding of physics. Get ready for hours of hands-on learning and fun!