The effectiveness of any teacher at all levels of education depends on the quality of the inputs, process, and resources within a given educational system. Primary instruction is designed to provide functional literacy and skills of verbal communication, mathematical accuracy, social studies, science, and creative studies. The achievement of this objective depends on the application of the systematic principles of the design of appropriate instructional system components for primary instruction. The materials-first rational model of instructional system development has been advocated. This model is based on the intuitive and opportunity models of instructional design and development.