Experiments are the gold standard for research because they provide the strongest evidence for cause-and-effect relationships. In an experiment, the researcher manipulates one variable (the independent variable) and measures the effect of that manipulation on another variable (the dependent variable). This allows the researcher to determine whether or not the independent variable actually caused the dependent variable to change.
In the case of apex learning, an experiment would involve randomly assigning students to two groups: an experimental group and a control group. The experimental group would receive access to apex learning resources, while the control group would not. The researcher would then measure the learning outcomes of both groups to see if there is a difference between them.
If the experimental group performs better than the control group, this would provide evidence that apex learning is effective in improving student learning. However, it is important to note that experiments are not always possible or feasible. In some cases, it may be unethical or impractical to conduct an experiment. In such cases, researchers may use other methods, such as observational studies or case studies, to gather evidence about the effectiveness of apex learning.