Pre-Lab Information  Did you title your lab report?  Did you state the purpose of the experiment?  Did you state the question you posed before the experiment?  Did you restate the hypothesis (or prediction) you formulated before the experiment?  Did you list all variables, labeling the independent and dependent variables? Did you indicate any constants or controls? Materials and Procedure  Did you make a list of materials? Including quantities and SI units?  Did you present the steps of the procedure as numbered list? Did you note any changes to the original procedure? Data—Tables and Graphs  Did you organize all data in a clearly labeled table and/or graph?  Did you check that your data is accurate and complete?  Did you title any tables and graphs? Did you label rows, columns, axes, etc., and include units? Analysis and Conclusion  Did you interpret your data and graphs in the analysis, and not just restate your findings?  Did you determine whether your data supported or refuted the hypothesis?  Did you describe possible sources of errors?  Did you suggest ways to improve or further your lab investigation?