They might show it by simply saying the Pledge of Allegiance. If they go to a sporting event, they could show patriotism by standing up and singing the National Anthem and put their hand over their heart. Some ways that adults show patriotism is by just paying their taxes. I found that interesting. They can show it also by standing up for the National Anthem.
Many people show it by voting.
The government reminds us of the patriots by celebrating holidays such as Independence Day, Veterans Day, as well as many others. They also have made statues, memorials, and museum to honor the people who served our country. A fun way that I think they have been patriotic, is making the state quarters. To me patriotism is being loyal and honoring your country. I think that one of the most important ways of showing patriotism is by voting for the president, and the candidates for your state.