NISHIGAKI, Chikako

西垣, 知佳子

introductory and beginner-level learners

[SUMMARY] Using data-driven learning （DDL） in foreign language instruction has become increasingly prevalent in recent years. However, few DDL applications target elementary, middle, and high school students at introductory and beginner levels. One of the reasons for this shortage is the absence of corpora with appropriate difficulty tailored for these learners. In this paper, we introduce the development and release of the Basic English Sentence （BES） Search, which is a combination tool of level-appropriate English sentences for elementary to high school levels and a search mechanism. This search tool is an application integrating a corpus exclusively extracted from copyright- free English sentences from the precursor corpus called the Pedagogical Sentence Corpus（PSC）（Nishigaki & Akasegawa, 2020） and a uniquely crafted search function. The BES Search allows users to customize searches for English example sentences according to the length of sentences, grammatical components, lemmas, and phrases, ensuring alignment with learning objectives. Additionally, BES Search is designed with consideration for users who may not be familiar with corpus studies, facilitating accessibility. Sentences extracted through the BES Search can be used in lesson preparation, DDL instruction, and the development of DDL applications without the concerns of copyright infringement, enabling targeted English sentence searches and utilization for specific objectives.