A 5-paragraph essay

This is a good example of a 5-paragraph essay.

In the 1st paragraph, the student introduces the problem or situation:
"A lot of people go through the day without having breakfast."
and then tells us what the essay is about:
"The purpose of this paper is to show the importance of breakfast, especially for students."

In the 2nd-4th paragraphs, the student gives us three reasons why we should eat breakfast, one reason in each paragraph:
2. The first reason why you should eat breakfast before going to school is for your health.
3. Another reason for eating breakfast is because you need food for to do well in your classes.
4. The last reason to have breakfast every day is because you can avoid diseases if you eat some breakfast in the morning.

Finally, in the 5th paragraph, the student repeats the main points, and the final sentence has a kind of personal message ("It is time for you to do something about your health") and a summary of the major argument, in different words from the introduction ("eating breakfast is the better way to start your day").

Remember that at this stage one sentence is enough for each paragraph.