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Calculations % Cu and % Zn in penny % error Cu and % error Zn based on year of penny Answered questions reflect a thorough understanding of scientific concepts underlying the lab. Answered questions are mostly accurate reflecting a good understanding of most scientific concepts underlying the lab. Answered questions are mostly complete reflecting some understanding of scientific concepts underlying the lab. Answered question reflect a limited or inaccurate understanding of scientific concepts underlying the lab. Discussion Section Restate purpose of the lab State your findings that address the purpose State 2 sources of error Suggestion for improvement Almost all information in category 4 is covered. Sufficient amount of background information. Some information from category 4 is missing Limited background information provided. Most information stated in category 4 is missing. Format / Appearance Organization / Spelling and Grammar Lab report is typed and uses headings and subheadings to visually organize the material. Data tables and figures are numbered with appropriate titles. Lab has been thoroughly proof read for spelling and grammatical errors. Almost all information in category 4 is covered. Sufficient amount of background information. Some information from category 4 is missing Limited background information provided. Most information stated in category 4 is missing References APA format http://www.citationmachine.net States 2 sources used in this lab for background information and images. Uses proper citation. Properly formatted and complete Bibliography/works cited list is complete, but not properly formatted (e.g. bulleted list). Bibliography/works cited list is incomplete (e.g. no citations for images) or improperly formatted Student only lists URL’s does not list sources used for research