I call these sheets sentence inspector. Once a week for homework, I give these out for homework. The students have to respond to a simple prompt, and they must use only 5 sentences. The trick is that they MUST edit. I even have them color the first letter and punctuation because yes, this is a BIG problem in 3rd grade still. It helps. I also require a parent signature and I encourage them to help their child edit any and all mistakes. This extra help at home, helps the parents to see how their children can write without bogging them down with a half hour of writing. It is pretty simple, yet will expose many problems the child may have constructing sentences. The prompt each week is different. There are 28 of them. Each sheet contains two pages (I copy them double sided). You can add to them, change them, or make your own, as these are word docs. The parents in my class really like them. There is a teacher box on each sheet you can use to quickly mark them. It takes about 5 minutes for me to mark these each week. I don't make all over them, but the checkbox allows me to show the parents why they got a check, check minus, or check plus. NOTE: of you teach 4th or 5th, you may want to change it from 5 sentences to 7 or 8. This activity really gets them used to writing and can be used as class work instead of hw if you wish.