This paper summarizes the developmental activities in mathematics conducted at the first grade level. Two instructional units of "Developing Mathematical Processes" were taught. The instructional units are described through a description of the activities that were tried, an explanation of evaluation procedures, and a report of the results of each evaluation. The purpose of the pilot activities was to verify the appropriateness of a mathematics curriculum for first grade children; the data displayed are exploratory data which assess the feasibility of the instructional procedures. (Author/DT)