Introduction: The introduction explains the purpose and objectives of the experiment. A good way to approach this section is to attempt to provide the reader with background, discussing the what and why of the experiment. Beginning with a bit of prior knowledge on which the experiment is based, you then try to explain the purpose of the experiment and why it was conducted in a certain way. Often, background information and purpose of the experiment will be found in your science text. The introduction is also the place where you state your hypothesis. Procedure (sometimes called Materials and Methods): This section is important as it explains to the reader exactly what you used to perform the experiment and how you did it. It is highly detailed so that another scientist could reproduce your experimental methods in order to obtain the same results and gain extra data. In the case of high school or even undergraduate college labs, most of these procedures will be well-known experiments with expected results. So for your purposes, you will not have to detail every single item or step you performed in the lab. But it is important to describe the steps in a way that shows you have a good understanding of the experimental procedure. Again, write in third person, and use past tense. You might say, “The beaker was filled with 200 mL of distilled water and placed over an alcohol burner. As the beaker was heated, the temperature was taken every two minutes until the water began to boil.” In some cases, it might be helpful to include a diagram of your experimental setup.
write a summary
Introduction: The introduction explains the purpose and objectives of the experiment. A good
way to approach this section is to attempt to provide the reader with background, discussing the
what and why of the experiment. Beginning with a bit of prior knowledge on which the experiment
is based, you then try to explain the purpose of the experiment and why it was conducted in a certain
way. Often, background information and purpose of the experiment will be found in your science
text. The introduction is also the place where you state your hypothesis.
Procedure (sometimes called Materials and Methods): This section is important
as it explains to the reader exactly what you used to perform the experiment and how you did it. It
is highly detailed so that another scientist could reproduce your experimental methods in order to
obtain the same results and gain extra data. In the case of high school or even undergraduate college
labs, most of these procedures will be well-known experiments with expected results. So for your
purposes, you will not have to detail every single item or step you performed in the lab. But it is
important to describe the steps in a way that shows you have a good understanding of the experimental procedure. Again, write in third person, and use past tense. You might say, “The beaker was
filled with 200 mL of distilled water and placed over an alcohol burner. As the beaker was heated, the
temperature was taken every two minutes until the water began to boil.”
In some cases, it might be helpful to include a diagram of your experimental setup.
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