Thames & Kosmos Gecko Run: Marble Run Twister Expansion Pack, Toy Model Kit for Creative Runs, STEM Toys to Foster Problem Solving Skills, Playable Only with Starter Set, Age 8+

FEATURES TWISTING TRACK ELEMENTS: Adds twisting stunts that challenge kids to build even more dynamic marble runs. EXPANDS UPON THE STARTER KIT: Designed for compatibility with the base vertical marble run set. SUPPORTS STEM LEARNING THROUGH PLAY: Teaches physics concepts like centrifugal force and momentum in an interactive way. FAST, CLEAN SETUP WITH NANO-ADHESIVE PADS: Easy to attach and reposition without residue or damage. RECOMMENDED FOR AGES 8 AND ABOVE: Encourages experimentation and critical thinking in a fun format., Manufacturer: Thames & Kosmos