This article depicts the rewarding experience of creating mathematical environments for kindergarten and elementary students by focusing on one of the most important and often difficult-to-grasp concepts (fractions) through play methods incorporated into a math fair. The basic concept of a math fair is threefold: (1) to create preplanned, organized, and intentionally developed mathematical learning environments; (2) to observe students' participation in and response to various activities; and (3) to use math fair activities as teaching aids and student enrichment in day-to-day classroom instruction. (Contains 5 figures and 1 table.)