Consider Echo360 Inc.'s acquisition of LectureTools Inc., a maker of interactive in-class educational tools, to be the latest in a series of deals in a consolidating industry.

The day prior to Echo360's Nov. 7 announcement, John Wiley & Sons Inc. (NYSE: JWA, JWB) said it agreed to spend $24 million on Efficient Learning Systems, an e-learning system provider that specializes in professional finance and accounting.

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