Use cardstock to cut out enough bingo cards so each preschooler has their own to play the game. Use scissors or a paper cutter to cut the cards into 8-inch by 8-inch squares, which creates a large and comfortable playing card for preschoolers.
Use a ruler and a pencil to mark every 2 inches around the outside edge of the paper. Connect the lines using a black marker to create a grid with 4 squares down and 4 across, creating 16 bingo squares total.
Write random letters of the alphabet in the squares on each card using the black marker.
Cut out 26 squares of white paper with scissors and write the alphabet on each square with a black marker. Place them in a small paper bag.
Cut several small 2-inch by 2-inch squares out of scrap paper with scissors for preschoolers to use as marker chips while playing bingo.
To play Alphabet Bingo, give each preschooler a bingo card and a collection of marker chips. Pull a letter out of the paper bag and have preschoolers look for it on their bingo card. When a preschooler has 4 in a row, they have bingo.