What is a writing skill that assures that students write sentences that differ in structure and length?

One effective writing skill that encourages students to vary sentence structure and length is the practice of using sentence combining. This technique involves taking shorter, simpler sentences and merging them into more complex ones, which helps students explore different ways to express ideas. Additionally, teaching students to use a mix of simple, compound, and complex sentences can enhance their writing style and maintain reader interest. Encouraging them to read diverse texts also exposes them to varied sentence structures, which they can then emulate in their own writing.