The purpose of this study is to develop instructional methods that encourage the use of vocabulary learning strategies in high school English education by incorporating the perspective of Universal Design for Learning. In order to achieve this goal, we devised two instructional methods and verified the effectiveness of the methods through two questionnaire surveys. First, students received feedback on their usage of learning strategies using radar charts with the aim of promoting the use of learning strategies. Result of the analysis between pre- and post- questionnaire showed that there was a statistically significant increase in all the factors of learning strategies. Second, students were given four options that they could freely choose during vocabulary learning with the aim of promoting the use of learning strategies that suit their learning styles. Result of the questionnaire analysis showed that more than 80% of the students used learning strategies recognized as suitable ways for their learning styles. These studies indicate that these instructional methods may have a certain effect in encouraging the use of vocabulary learning strategies.