Quadrilla Basic Coding SetA combination of logic, STEAM principles and a wooden marble run Build towers and tracks to guide marbles in the right direction Includes 20 challenge cards ranging from 'Starter' to 'Expert' Loved by big names: Quadrilla has been praised by The Wall Street Journal as a great way to introduce children to coding as marble runs mimic the way computer programs work. Full S. T. E. A. M. ahead: Quadrilla actively encourages spatial thinking and problem