Does anyone know how to write a standard of comparison, like what qualifies as one. We always just use the control group thing, and that part is one that we have struggled on in the past two competitions. Thanks!
The control group is the standard of comparison. You have to make sure that it is a part of the experiment with the manipulated variable being unmanipulated. For example, a pendulum experiment with a cup and marbles would have their SOC be the cup without any marbles. In experiments where this is harder to define and the manipulated variable is not a quantity, but a type, you have to choose the one that is most "neutral." For example, a paper airplane with copy paper, tissue paper, and card stock would probably choose the copy paper because it is medium thickness and would have an air resistance in between that of the other types.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!