Teachers even use printable worksheets. The kids are allowed to trace the numbers, letters and even join dots. This is the perfect way to control the movement of the wrist and fingers of the kids who are practicing these worksheets. With continuous practicing it gets easier for the children to learn and write clearly. Worksheets are used in schools to practice cursive writing.
There are many free worksheets available, especially online, but still the best worksheet is one that you personally draft. This way, you are able to match the level of difficulty of the activity in accordance to the performance level of your own students. It is not bad to reuse worksheets for another batch of students, but once in a while it is also better to vary the activities you give to kids. Worksheets can be made for fun if it is attuned to the current interests of kids. The kids will respond better to activities close to their own interests.