At El Sol Academy, a charter school in Santa Ana, the 4-year-olds are working hard at learning – by playing computer games. At one computer, a girl tries to match up the numeral 3 with four trees.

YORBA LINDA – Learning math is fun for Mabel Paine students as they’re guided by JiJi, a little penguin. JiJi is a character in a software program that is used to introduce mathematical concepts ...

California’s hottest new math teacher is an animated penguin named JiJi. Yes, it’s true. A mute, waddling, tuxedo-clad cartoon figure has been quietly taking over math programs dotting Silicon Valley, ...