Exit tickets are a great way for teachers to keep track of student understanding. These can be completely anonymous, but each child needs to fill one out in order to leave the room after class is over.
I included two different types of slips in this product.
1. The first two pages include slips that have students tell the teacher something that they learned and understood during the lesson
2. The second two pages include slips that have students tell the teacher something they did not understand during the lesson.
This will help you tweak your instruction for the week by allowing you to move forward if all students understand or review something or many things that students are not grasping.