The fourth graders recently studied about the scientific method. As a culminating activity, students conducted an experiment. They asked the question: Does soap affect the surface tension of water? After asking this question, the students made their hypothesis.
Students conducted an experiment using droppers, plain water, soapy water, and pennies. Students conducted 3 trials of dropping drops of water on the head’s side of a penny with plain water. Afterwards, students conducted 3 trials of dropping drops of soapy water on the heads side of a penny. Students continued to put drops of water until the surface tension broke and the water spilled over. All their data was collected.
After analyzing the data, the students concluded that soap affects the surface tension of water. Students were able to put less drops of soapy water on the penny than with plain water before the surface tension broke.
Students should now have a better understanding of how scientists use the scientific method as a process to answer questions.