The recycled language will be re-introduced in a different context, or through a different skill. This helps the student extend their range of use of the new item.
Example
On the last course, the learners were introduced to functional language of greetings and introductions. Now they do a quick mingle activity where they recycle this language.
In the classroom
Recycling is an important part of the consolidation of learning. It is often included in course and course book structures. Teachers can look for opportunities to recycle new language through varying the skills work a class meets.
Further links:
https://www.teachingenglish.org.uk/article/techniques-priming-recycling
https://www.teachingenglish.org.uk/article/recycling-vocabulary
https://www.teachingenglish.org.uk/blogs/chrysapap/headlines-recycling-vocabulary-creatively
https://www.teachingenglish.org.uk/article/skills-circuits-recycling-language