It uses lots of paper and ink cartridges. Students will be working at their own pace. Everybody is working on different objectives, so there's no way to do a whole group lesson. This is how it works in my room - 1. Each student will get a different practice, so they can't just copy.
Students do the practice, marking answers on a card.
Put the card in the scanner to score it. Computer prints out a report telling which answers are wrong. I print out a test for the child. He will take it after I go over what he missed on the practice. He'll only get tested on the objectives he got right on the practice.