The effective learning to students is the common wish of teachers. The main idea of the study is to research the ability of algebra, statistics and probability index on Grade 5 and demonstrate the applicable of student mistaken types on the basis of Bayesian Networks which is a probability analysis method. To reach the target, teaching students in accordance with their aptitude, by executing the individual Learning Educational Program online. Five purposes as below. 1. Studying the ability of algebra, statistics and probability index on Grade 5 and set up its’ Bayesian Networks Framing. 2. Establishing the quiz question based on the ability of algebra, statistics and probability index on Grade 5. 3. Discussing the influence of Bayesian Networks’ correctness with variety classified Decisive-Point. 4. Executing the Learning Educational Program based on the analysis data of Bayesian Networks. 5. Achieving the remedy instructions effective by executing the Learning Educational Program.