Playsheets are a digital worksheet, they should give immediate feedback. Oftentimes they take the form of a game. For example, if you use a website like http://quia.com/web you can input your curriculum questions into a variety of game templates. It is still curriculum questions, but some gamification has been applied to what is essentially a worksheet. A progress bar, visual feedback in the form of points or stars, and an immediate indication of success or failure.