will be using these for making "flash cards" each week. keep a good supply in your pencil pouch at all times. try to buy the larger packs as the price per card is usually much cheaper. for example, staples has 500 packs for $3.29 which works out to 0.7 cents per card. but in a 100 pack which they sell for $1.79, they are 1.8 cents per card which is more than twice as expensive! if you go shopping with a buddy and share the cost of buying stuff in larger amounts and then split it - you can save a lot of money. this is very true for paper 