Sometimes, when you are teaching young learners is difficult to choose students to participate in class... because they all want to participate. Here is an easy way to choose them and knowing if you have already called them or not:
1- Each student write his or her name on a popsicle stick.
2- Put all the sticks in a pencil holder.
3- Pick a stick and read the name.
4- You put that stick out of the pencil holder. In this way, you know that the names of those students you have not called yet are inside the pencil holder.