The video emphasizes the importance of teaching students to identify first sounds before accurately using first letters to spell. Students can learn more by experiencing how words change when they start with different letters. For the First Letter activity, a letter board can be used, which can be a voice output, phonemic voice output, or keyboard. Teachers can play a game of “deep diving” by having the child choose a letter and listening to the story to see how many words they hear that start with that letter. Students can use their device to indicate when they hear a word or use a switch. The goal is to bring awareness to the beginnings of words. During the reread activity, students can choose a letter from their AAC system and read the story while listening for words that start with that letter. The teacher can indicate when a word is heard, and words can be listed on a whiteboard.