What basic skills do students today need to thrive in the 21st century digital age? The 3 R’s of “reading, ‘riting, and ‘rithmetic” were deemed essentials of mandatory public schooling in the 19th century Industrial Age where mass printing and machine-made paper and ink made books available to just about everyone for the first time in history. A student today needs a fourth R: Reading, ‘riting, ‘rithmetic and ’rithms, as in algorithms, or basic computational skills. By getting the youngest kids started on algorithmic or computational thinking (or “coding”, in popular lingo), we give them the same tool of agency and being able to make (not just receive) digital content that the 3 R’s gave to Industrial Age learners.