Print the page of your choice. Have the children color it. Individually
take the children aside and have them identify the letters.
If they get the letter right, stamp it with a bingo marker. Leave the letters that they get wrong blank. You can also use dot stickers instead of bingo markers. If you don't have the appropriate colored stickers, you can lay any circle stickers out on newspaper and spray paint them the color you need.
A viewer recently sent in this idea to use the assessments. Have the children draw a letter tile from a box, identify the letter, find it
on the sheet and then color it in.
Here is an Amazon link for the letter tiles.