The study is concerned with the change in mathematical conceptual understanding and computational skills of elementary school pupils during an academic period of twelve months in selected schools using mathematics resource personnel. Researching instructional techniques for mathematics concepts being taught in the elementary school and assisting in the implementation of the research into classroom procedure were the functions of the resource personnel. A total evaluation of the data was used to form the following conclusions confined to the population used in the study and the experimental procedure which was followed: 1. The use of mathematics resource personnel did not prove effective in improving the computational skills of the first or third grade elementary school pupil. 2. The use of mathematics resource personnel did not prove effective in improving the conceptual understanding of the first grade elementary school pupil. 3. The use of mathematics resource personnel did prove effective in improving the conceptual understanding of the third grade elementary school pupil following a six month period of treatment. 4. The use of mathematics resource personnel did not prove effective in improving the conceptual understanding of the third (now fourth) grade elementary school pupil following a twelve month period of treatment.