Copy the first page on cardstock and laminate for as many students as you have in a center. Next, copy the same number of this first page on card stock and laminate...but you're going to cut these into circles. I use a 1 inch circle cutter from Walmart or Hobby Lobby and it fits perfectly! Cut out these circles and hot glue on water bottle caps. The kids can match the bottle caps to the mats you have made. I have also included ones with missing letters that you can laminate and use later in the year as an enrichment activity for those who have learned all the letters and are ready to sequence!