I think this corpus is more user-friendly than COCA, so it would be great for English language learners to use. I like that you can instantly see the academic words from the text, check the definition, and explore different collocations. This is a great tool for directly linking vocabulary with the text, emphasizing on context.
A teaching idea:
To help students improve their knowledge of collocations, teachers can have students look at their previous writing assignments, noting phrases that they overuse or feel limited in using. In class, the teacher can demonstrate how to search for similar collocations on the website (insert a sentence, click on the “phrase” option, click on words to form a phrase, and select “synonyms” to generate phrases with similar meanings). At home, students can find new phrases through this search method and write a paragraph using the new phrases in order to demonstrate understanding.