Antonym and Synonym Gumball Sort. HOW TO USE… Learning centre/Pocket Chart: Have gumball machines in the centre of the table and gumballs scattered around. Students sort the gumballs into the correct gumball machine. As a whole class: Each student gets a gumball card and has to sort into either the synonym or antonym gumball machine. You could use velcro dots and hang on a wall to display during this particular grammar focus.