The Kinderbright series was created and produced by the principal of a Montessori school, utilizing learning theory developed by Dr. Maria Montessori and other researchers. When used alone, or in conjunction with the Montessori classroom, Kinderbright videos have produced some amazing anecdotal results. Children who were not learning their sounds in the Montessori classroom as early as anticipated, began watching the Kinderbright videos and developed abilities quite suddenly, within a week or two. Parents and teachers commented that the videos were the key. In non-Montessori environments, certain children below three years of age learned the sounds of nearly all the letters well before their older counterparts typically do in a Montessori classroom. Five or ten minutes per day is all that's required. In many cases, parents see results almost immediately. The earlier children start (we recommend 2 years of age), the easier it is for children to learn.