Select the main topic of the story you will write. When doing so, remember who your audience is: second-graders. It is important that you pick a central topic or theme that will appeal to second-graders. Make a list of everything second-graders may be interested in; for example, bugs, going to school, monsters and aliens. Choose your favorite from the list.
Create a plot revolving around your main topic. For example, if you chose bugs, make the main character of the story a talking snail. Similar to the main topic, your plot should also be relatable to second-graders. A possible way to go about doing this is to incorporate a lesson plan into the story. For example, if the students are learning basic American history, the talking snail can take a trip to the White House.
Organize the story structure. Now that you know the main topic and plot idea of the story, organize it into a structured series of events. What happens in the story is entirely up to you, but every story should follow the same basic structure. An expository scene in the beginning where you introduce the character and situation. This will be followed by rising actions that bring the main character closer to his goal. Then add in the climax that alters the story or effects the main character in a certain way. Follow this with falling actions that show how the main character recovers from the climax and the resolution that brings the story to a close.
Write your story. Now that you know the main character, plot and outline of the story, put it into words. When you write the story, keep it concise. Second-graders have a short attention span and can easily drift off if they get bored. Do this by introducing the story with action. For example, the snail ekes his way through heavy rain to get to his mailbox and receives a letter inviting him to the White House. Try to keep the story as active as possible.
Choose pictures to go along with your story. If you are a good artist or know one, have the pictures drawn out and colored in to go along with the story. Second-graders can be very visual learners and will be able to comprehend the story much better if they can actually see what is going on.