Math is, by definition, a subject about numbers. But at the National Council of Teachers of Mathematics this week, math educators said the subject has its own language, too—and knowing how to speak it ...

Speak, an AI-powered language learning platform, just achieved unicorn status. The San Francisco-based company announced on Tuesday a $78 million Series C round of funding that values it at $1 billion ...

Languages are typically taught by first exposing you to reading and writing, but native speakers always start learning languages by hearing and talking. Speak has built a platform to teach languages ...