Before the clicker built into the lesson the teacher will give a brief instruction on how to use the tool. For example, when choosing an answer, the teacher must explain to his or her students when math problems are posted on the whiteboard. Students should ensure their clicker is turned on and connected or that they are logging in. Then the button with A, B, C, D, or E is the answer choice when dealing with multiple choice answers. Numeric keypads allow you to enter the answer. Effectiveness ratings are based on clicker ease of use and user engagement.