McGraw-Hill Education has acquired adaptive learning company Area9 Aps after buying a minority stake in the group in 2013.

Copenhagen-based Area9 develops adaptive learning technology that aims to provide personalized training and education. Terms of the transaction were not disclosed.

The company had a relationship with McGraw Hill even before the education group acquired a stake. The two companies build McGraw Hill LearnSmart, an adaptive study tool that was released in 2009. McGraw-Hill bought a 20 percent stake in Area9in January 

“This acquisition will allow us to accelerate our development of integrated teaching and learning experiences that help generate results for students and instructors,” says Buzz Waterhouse, CEO of McGraw-Hill Education.

The transaction comes just days after McGraw-Hill announced it had acquired Engrade, a digital platform developer that provides tools for educators. Before that, in June, the company bought Aleks Corp. in its first deal since it was spun off from McGraw Hill Companies. 

McGraw-Hill is backed by Apollo Global Management LLC (NYSE: APO), which acquired the company in March 2013. 

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