If you would like to make them REALLY sturdy so they will last longer, you could laminate them using laminating pouches and a la minator.If you would like to make the flash cards even sturdier, you could glue them to construction paper after you cut them out.You could also use a small paper cutter if you would like to cut the cards out faster.
We recommend printing the flash cards on card-stock paper, to make the cards stiffer and more durable. The cards are available in three sizes full-page half-page and quarter-page. Download and print flash cards from the Dolch, Fry, and Top 150 Written Words lists, or make your own Custom Sight Words Flash Cards.