This PDF file has 20 pages of Bingo Cards (1 card on each page) which are great for learning to tell time to the hour and half hour. They are predominantly used for telling time on an analog clock, but some cards have some digital times as well. They are used exactly like the game of bingo. The teacher calls out a time, and students mark on their cards (with an object if you choose to laminate and reuse, or crayon if you're disposing of them). It's a fun and interactive way of learning to tell time!