Got a budding computer scientist in the family? Take advantage of the variety of free online coding classes for kids offered by code.org, Khan Academy, and Swift Playgrounds. And then there’s Code Monster, which isn’t even a class but more like a game. It features a little, one-eyed blue cartoon monster that offers simple prompts to demonstrate how numbers can translate into geometrical figures. Check it out at crunchzilla.com/code-monster.