A reaction paper is what you write in response to something that you have seen or heard. The reaction paper itself should take a look at the event, whatever it might have been, and analyze it within whatever parameters called for by your teacher. The introduction to your reaction paper is an important part of the paper itself because it sets up the entire paper and allows you to write it correctly.

Introduce the event in the first sentence of your introduction. Give the name of the event and some basic information about it, such as the time and place of the event.

Write a small bit about the event itself, in a description. For instance, if you are reacting to a movie or book, explain what it is. If you are reacting to a speech, or something else you witnessed, like a rally or protest march, explain that as well.

Explain what will be in your reaction paper. Give some information about what you will discuss and what type of reaction you might have to the event itself.