The purpose of the study was to examine the engagement of preservice teachers in the kind of authentic experiences that provided the modeling needed to make high-quality instruction in mathematics a reality for young children. Inasmuch as these preservice teachers had not yet received any formal methods classes in mathematics, the authors theorized that classroom teachers whose practices and dispositions were congruent with the National Council of Teachers of Mathematics standards and the State of South Carolina Mathematics Standards could model effective teaching instruction for young children using the project approach. These same teachers could then provide mentoring and encouragement to preservice teachers as they became involved in this high-quality program for 4-year olds, deepening the knowledge base of the preservice teachers regarding developmentally appropriate ways to teach numeracy to 4-year olds.