The purposes of this research were to study and compare the English vocabulary knowledge before and after, to study memory retention of English vocabulary after two weeks of experiment, and to study attitudes on learning management toward teaching English vocabulary using LINCS Vocabulary Strategy and Round Robin Technique. The sample consisted of 32 Prathomsuksa 3 students studying in the second semester of the academic year 2018 at a school in Mueang Nong Khai, Nong Khai. Research instruments included lesson plans, an English vocabulary knowledge test, and an attitude questionnaire. The mean, percentage, standard deviation, the t-test for One Sample, and the t-test for Dependent Samples were used in data analysis. The findings of this research were as follows: 1) The students had the pretest and posttest mean scores of English vocabulary knowledge at 34.05 percent and 73.60 percent. The students’ English vocabulary knowledge after the experiment was higher than that of the pretest and the students’ posttest mean score was not less than 70 percent. 2) The students had memory retention of English vocabulary after two weeks of experiment. 3) The students’ attitudes on learning management toward teaching English vocabulary using LINCS Vocabulary Strategy and Round Robin Technique was at a good level.