This versatile math factors card set can be used as is, for a classroom display; or, can be printed 4 to a page, cut out and use lids cut apart from jars. This way, students can use the lids and jars as a matching game in a small group or in a center. I broke the set up in different ways. For example, first we only worked with numbers 1-25. Then we looked at prime/composite numbers, odd/even numbers and then multiples of numbers (2s, 5s, 10s, etc.) Also included is a page with suggested discussion questions and a worksheet with 4 blank jars. (I put a different number at the top of each jar on the worksheets for all 7 of my students.) My students used bingo markers to make the candy dots before writing the factors on them, but this does take some time to dry before you can write on them. Kids could draw and color their own candy (or bugs, or buttons...) on the jars, though.