If your youngsters have a test coming up, even something as simple as the steps in the water cycle or types of environments, kids can benefit from using note cards more than question and verbal review alone.
Making the cards probably won't take you a long time, AND you'll find time for yourself when you're able to hand them over and ask your kiddos to go study. Have a reward like a healthy snack or time with the tablet handy.
If you can, make the cards with your kids! The process of manufacturing them will not only give them pride but will be a learning experience that may be all they need to ace that test!