PowerPoint has a variety of built-in templates for posters. There is also a significant library of imagery in the Smart Art gallery in PowerPoint.
Poster templates may also be downloaded from the following sites, opened in Microsoft PowerPoint, and modified as needed by the student.
Printing the Poster
Determine the maximum dimension of the printing available to you.
You can print your poster in strips if the printer is not large enough in one dimension.
Different weights and types (glossy, etc.) of paper may be available.
Posters can be printed on vinyl and cloth for durability and ease of transport but these are generally more costly.
Remember to leave adequate time to have the poster printed.
A digital poster allows for more interactivity by the viewer. Some versions are simply slideshows that may or may not include audio.