What are variables in the scientific method?

Variables in the scientific method are elements that can be changed or controlled in an experiment to test their effects on other variables. They are typically classified into three types: independent variables, which are manipulated by the researcher; dependent variables, which are measured in response to changes in the independent variable; and controlled variables, which are kept constant to ensure that the results are due to the manipulation of the independent variable. Properly identifying and managing these variables is crucial for obtaining valid and reliable results in scientific research.