AREA9 APS: It's been an active week of acquisitions for McGraw-Hill Education. Today, the corporation announced its acquirement of Area9 Aps, an adaptive learning company. McGraw-Hill Education originally partnered with Area9 Aps in 2007 deliver personalized learning experiences. In January 2013, McGraw-Hill Education purchased a 20 percent equity stake in Area9; the agreement announced today covers the 80 percent of the equity in Area9 that McGraw-Hill Education did not already own. The terms of the deal were not disclosed.