Use this worksheet to record your data as you conduct your experiment.

• Carry out your experiment. You must repeat your experiment with each experimental group in at least 5 separate trials. This is so that your data will be reliable (reproducible). The more trials you conduct, the more likely that someone else repeating your experiment will get the same results.

• Make sure that you measure as carefully as you can and use the most precise (smallest) units possible. This makes your measurement data more accurate (correct/exact).

• Set up your data table(s) as follows:
  • Title your data table. (Independent Variable vs. Dependent Variable)
  • Label the independent variable at the top of the left column. Underneath the independent variable label, label what changes will be made to the independent variable to test the hypothesis.
  • Label the dependent variable labels across the top of a data table. The units of the dependent variable must also be labeled across the top of the data table.

• Systematically record all data in your science project journal. Data should include numerical measurements, personal observations, photographs, drawings, etc.

• The date of when the data is measured or observed should also be recorded.