Buckle up and get ready for a fun and educational ride; This set allows students to build a working roller coaster, plus two additional models. It also features three unique experiments, one for each model, to teach about the relationships between time, distance, and speed. Includes one battery-powered motor and over 500 KNEX rods and connectors. Models can be built one at a time. Requires two AA; batteries (not included). Children will be engaged and energised as they further their knowledge and understanding of the science, technology, engineering and math concepts associated with a real-life amusement park ride. This set includes over 500 parts plus a battery-powered motor for a single child or team of 2-3 children to build a working roller coaster, plus 2 additional models: a ramp and a half-pipe. Once built, a downloadable booklet guides students through 3 hands-on, inquiry-based experiments on each of the models. Students will learn about the relationship between time, distance and speed plus much more; The experiment guide is aligned to national stem standards and is appropriate for ks2-3. For ages 8+. Requires 2 aa; batteries, not included. One supplied. Size H30.48, W40.64, D6.35cm. Batteries required: 2 x AA (not included) plus . For ages 8 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.