Which mathematical e-commerce innovation first introduced adaptive learning algorithms that personalized problem sets based on individual student performance data?

As mathematics education evolves, so do the platforms that distribute educational materials. The digital transformation of mathematical resource distribution has revolutionized how students and educators access learning tools. This trivia question explores a significant milestone in the e-commerce evolution of mathematical educational resources.

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Khan Academy's Knowledge Map (2010)
McGraw-Hill's ALEKS system (2001)
Pearson's MyMathLab (2007)
Wolfram Alpha Pro subscription service (2012)