An organized set of investigation procedures is called a

scientific investigation

scientific theory

scientific procedure

scientific method

An organized set of investigation procedures is called a scientific method.

There are five steps of the scientific method for an experiment.

Step 1: Make a question

Step 2: Do some research for that question.

Step 3: Hypothesis (a guess what might happen during the experiment)

Step 4: Test and collect data

Step 5: Conclusion (what you learned from the experiment)