This research aims to develop an electronic lesson 1) to binary tree story. List of major data structure and algorithm 2) to compare the achievement of students through electronic lesson. Binary tree story List of major data structures and procedures more 3) to assess the satisfaction of students learning with electronic lessons. Binary tree story List of major data structure and algorithm Tools used in the research is to 1) binary trees electronic lessons. List of major data structure and algorithm 2) achievement tests measure the amount of option-type 4 20 ponnai 3) evaluate satisfaction in the lesson in the use of electronic. Binary tree story List of major data structure and algorithm, for example, is a group of students, grade 2, of the Faculty of education, computer courses, Nakhon SI thammarat rajabhat University. 30 random people using simple The statistics used in the analysis of the data is the value per cent average, standard deviation, and.