Practising new structures and functions is a purpose of which activity?

The purpose of writing is to express oneself, to provide information, to persuade, or to create a literary work. It also aims to expresses or reflects on his or her own life and experiences.

• 'Writing at word level' is a learning activity to develop children's vocabulary, handwriting and spelling. Activities like classifying words into word families, crosswords, picture labelling and word puzzles comes under it.
• 'Writing at sentence level' is an activity that allows students to make meaningful sentences. For example, practising new structures and functions is one such activity.
• 'Writing at text level' is an activity that relates to writing composition and reading comprehension. Activities like poster making and poem writing falls under it.

Hence, we conclude that practising new structures and functions is a purpose of 'writing at the sentence level'.