Sheepy the thing is, an independant variableis something you change, see here, i did an experiment a toy car ramp one, to see the distances they would go, i used three diff cars, so the cars are the iv bc im changing the type, secondly, im also changing the angle of the ramp, and the dv is the actual measurment of how far they go, the thing that is controlled is the ramp length, and ground surface
