E-learning provides people a convenient and efficient way for learning things. But is no appropriate way to estimate and diagnose students in elearning environment. Sato’s student-problem chart is one of the analysis methods for diagnosing students learni E-learning provides people a convenient and efficient way for learning things. But is no appropriate way to estimate and diagnose students in elearning environment. Sato’s student-problem chart is one of the analysis methods for diagnosing students learni
