Variables

weight/gauge of paper (we use GSM as the unit, in Australia);  eg. photocopy paper = 80gsm, newspaper =~45gsm, pad paper =~65gsm,  A4 cover paper = 125gsm, large card (at St Al's) = 220gsm size of paper (therefore, mass of plane) length of body of plane width of wings of plane depth of body of plane style of plane (way it is constructed) - such things as wing and tail flaps, nose weights etc are also part of this throwing style (not really one that we would want to test, I wouldn't think, but needs to be considered) wind (environmental factors) height of starting point method of measurement of distance (perpendicular to throwing line/in a straight line to where plane hit the ground...)