Comment on Bloom's Taxonomy of Educational Objectives For the Cognitive Domain

The biological taxonomy is the inspiration for Bloom's theory on Taxonomy of Educational Objectives for the Cognitive Domain.According to the cognitive goals ranging from the relatively concrete intellectual skills to the very abstract thought,Bloom divided the cognitive objectives of instruction into six main classes(knowledge,comprehension,application,analysis,synthesis and evaluation)as well as several sub classes.This theory has its own advantages and has been proveduseful for both research and teaching. However,it has branght forth many difficulties to teaching and learning.Therefore,people are trying their best to reconstruct a more ideal theory on taxonomy of educational objectives.