Construct your own working roller coaster model made of real wood! The Mini Coaster is full of dips and turns with some engineering and physics thrown in - so once you build your coaster, you can run marbles through it! The assembly instructions feature a graphic novel with the Tinkineer cast of characters - Kelvin, Joule, Newt, and friends - to communicate meaningful STEM concepts in an engaging format. It's a fun way to learn about roller coaster design and conservation of energy while making an awesome kinetic sculpture! The Mini Coaster takes approximately one to two hours to build, and measures 6 inches when finished. Household white glue (not included) required for building. Recommended for 1 player, ages 9 and up. Includes Laser-cut Birch Wood Parts, Metal Axles, Marbles, Tinkineer Graphic Novel with Assembly Instructions. Household white glue (not included) required for building. WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years of age. Made in the USA Imported Product Specifications Package dimensions: 9 in x 9 in x 2 in Material & Care Plastic Wipe with a dry or damp cloth