Duolingo, best known for its whimsical owl and language-learning app, is working on a new product to add to its growing suite: a math app, according to CEO Luis von Ahn. The co-founder mentioned the ...

ST Math, an online program from MIND Research Institute used by more than 1.3 million P-8 students, employs a visual, gamified approach to teach math. I recently spoke with MIND’s chief data science ...