With the help of a custom Java applet, he was able to get kindergartners to write a tic-tac-toe program, based on step-by-step rules the students formulated as a group. And using colored balls and string, he taught the kids how to create graph algorithms, an essential component of computer science. “We believe our work shows that you can start teaching computer science before students even know how to read and write,” Gibson (who now teaches in France) wrote in a 2012 paper.
I disagree with the title, but not with the content. How young do you start teaching coding?