STEM Amusment park set includes a geared motor to power four Largescale models of the Ferris wheel, London Eye , meery go round & booster ride includes a hands on activity book with theory and exciting exsperiments and quizzes with their soloutions. Stem instructions and workbooks included. Multiple builds possible. Online model plans. Fully compatable across all engino systems. Develops STEM priciples. Size H37, W49, D16cm. Batteries required: 2 x AAA (not included) plus . For ages 3 years and over. Manufacturers 3 year guarantee. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.