The paper never discusses physical issues involved in the object. Well written so that the paper is pleasant to read. Nicely packaged, enhancing the content without wasting words. Well thought out so that it appears complete and thorough. Acceptable photograph attached, increasing grade by one increment.
Photograph is exceptionally helpful to understanding of topic.
Too little attention to physics and physical issues of how the object works. Mistakes in the application or understanding of physical principles. Vague in the application of physical principles to the object. Poorly written, making it difficult to read. The paper fails to give the reader a clear overall picture of what is being discussed.