If you want to get kids' full undivided attention, you'll have to think of a fun way to do things. That's why a group of roboticists from Harvard's Wyss Institute created Root: a small hexagonal robot designed to ignite their interest in coding. Root was designed to crawl on a white board, using the markers and erasers it carries on command. Kids can control it by moving icons around in its accompanying app called Square (get it?). They simply have to make if-then statements using the icons, so even very young children can make the robot draw doodles and erase them afterwards. Older kids (and adults), however, can easily switch to the app's more advanced, text-based interface.