You can use
sequencing: ask your students to put a jumbled paragraph in the correct order.
parallel writing: give your students a piece of writing with specific questions (content, 
                          structure, connectors, tenses ...)then ask them to write using the same   
                          outline.
brainstorming: ask your SS as many questions as you can to give them/ or elicit from them 
                        ideas to be used in their writings.
give them topics they are interested in at the beginning.
encourage them to read as much as possible.
             Good Luck