Science experiments and projects are effective tools in achieving learning by doing. Alarmingly, lack of necessary equipments seriously affects Science teaching, which in turn compels improvisation of low-cost apparatus/experiments. In this context, present study aims to (1) design and propose an innovative and low-cost project on chalk chromatography, (2) determine and compare the Retardation factor / Relative flow (Rf) value of 12 colour inks using it and (3) find out the opinion of teacher trainees about this working model. The method includes marking of twelve coloured ink on twelve chalks and running chromatography using water as solvent. The chromatogram revealed that orange colour had highest Rf value (0.925) and pink had the lowest (0.317). It is to be noted that, Rf values calculated are not consistent hence, this technique is not to be used for analytical purpose. Excepting that limitation, the favorable opinion and remarks of almost all the future teachers (N = 128) establishes that, present working model is innovative, easily improvisable, no/ low-cost, can help for joyful learning and be able to ignite the creative minds of school children. Hence, the current activity is assertively proposed as a novel idea and a low/ no-cost project for high school students for active learning even at home and to motivate them to go beyond text book.
