There are many types of writing worksheets. There is the cursive writing worksheets and the kindergarten worksheets. The latter is more on letter writing and number writing. This is typically given to kids of aged four to seven to first teach them how to write. Through these worksheets, they learn muscle control in their fingers and wrist by repeatedly following the strokes of writing each letter.
When you are a parent, and you want to teach your kids ahead of time just before he would go to school, you can use the free online worksheets. There are lots of them available. You can let your kids learn online. Through this, your kids will be ready for school. These online materials are readily downloadable and can be printed for use. And the good thing about this is that you can produce as many copies as you want, until your kid learns and perfect the craft of writing.