THINK THROUGH LEARNING, the developer behind online math program Think Through Math, has been acquired by Provo, Utah-based Imagine Learning. Terms of the deal were not disclosed. Imagine Learning is owned by Weld North, a private equity firm that also owns Compass Learning, Edgenuity and a half dozen other edtech companies. Founded in 2002 (then known as Apangea Learning), Think Through Learning had raised more than $10 million in venture capital. Check out our Index for more details and teacher reflections on the Think Through Math.