Which groundbreaking market research methodology, first implemented in 2003, revolutionized mathematics textbook development by tracking student problem-solving patterns in real-time?

The mathematics industry has seen significant evolution in how educational products are researched, developed, and brought to market. Understanding the history of market research in mathematics education can reveal important insights about why certain teaching tools and approaches have succeeded while others failed. This trivia question explores a pivotal market research innovation that transformed how math educational products are developed today.

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Dynamic Response Tracking (DRT)
Sequential Learning Assessment Protocol (SLAP)
Cognitive Engagement Monitoring (CEM)
Mathematical Achievement Progression System (MAPS)