educational services, namely, conducting, seminars, courses, training and classes in the field of multi-sensory approaches to reading, writing and spelling, and disseminating course materials in connection therewith; providing tutoring services based on multi-sensory approaches to reading, writing and spelling; providing educational speakers on the topic of multi-sensory approaches to reading, writing and spelling; and developing and disseminating educational materials of others in the field of multi-sensory approaches to reading, writing and spelling