CS Unplugged is a collection of free learning activities that teach Computer Science through engaging games and puzzles that use cards, string, crayons and lots of running around.
This site, created by the University of Canterbury in New Zealand, introduce students to Computational Thinking using concepts such as binary numbers, algorithms and data compression. Importantly, no computers or programming is required!
Separated from the distractions and technical details of having to use computers, students can concentrate on the concepts and get a better idea of how computers “work”.