35 Demonstration of goods related to learning mental math; presentation of a training program for mental math on communication media; retail or wholesale services of methodical materials, lecture materials and training materials; advertising programs for teaching mental math; retail or wholesale services for methodical materials, lecture materials, training materials for the mental mathematics programs; retail or wholesale services for educational games; procurement services for others [purchasing goods and services for other businesses] of methodical materials, lecture materials, training materials for the mental mathematics programs and educational games educational games]