LetterSchool is the #1 educational app to teach toddlers and preschoolers how to read and write. LetterSchool is recommended and used by parents, teachers, and occupational therapists worldwide!Visit our website for more information: letterschool.orgNote: Next to the official YouTube channels, there are many fan-channels. Those channels aren't monitored or managed by us. A few you can find here: https://www.youtube.com/channel/UCD3wBgKdlBtVbPVEDoulZ6QDo you wish to be listed as well? Contact us via [email protected] .