No preselection of the participants was done, except for the chronological age. The programme was: fractions, positive/negative numbers, linear equations, the Cartesian plane, the equation of a straight line, parallel and intersecting straight lines, the belonging of a point to a straight line, ...
the same product space and on different product spaces , compositions of a T2 FS with a type-2 relation, type-2 hedges, Extension Principle for IT2 and GT2 FSs , functions of GT2 FSs computed using α-planes, Cartesian product of T2 FSs, implications , an appendix about the properties ...