Controlled Experiment
Controlled experiment explained in an easy to understand way:


Imagine trying to figure out which ingredient in your favorite cookie recipe makes it taste just right. This situation is similar to a controlled experiment because you only change one ingredient at a time to see how it affects the cookie’s taste, just like changing one variable in an experiment. In both scenarios, whether baking cookies or conducting a scientific experiment, you isolate one factor (the ingredient or variable) to determine its direct impact while keeping everything else constant, like the other ingredients or conditions.
Practice Version

Controlled Experiment: An experiment in which only one variable is changed. Controlled experiment. A controlled experiment is when you change only one thing to see what happens while keeping everything else the same.