http://debashishbanerji.com/books/authored/contours-of-modernity-an-exhibition-of-contemporary-indian-art/

Berdyans’k In this activity the children had to roll the balls in trays to create their picture.  First each child choose their paper and paint color.  Next we choose the size balls they wanted.  After adding balls, paint and paper to their tray, they slowly tilted the tray to move the balls through the paint and across the paper.