Pick a short scene from a movie or a TV series at the children's level. Ensure the dialogue is easy to follow and the actors speak clearly. Type the transcript of the conversation, using only lower-case letters and no punctuation marks.
Make a copy of the transcript for each student and distribute them during the lesson. Instruct students to watch the dialogue video and then add punctuation marks and capitalization on their transcripts. Ask students to work alone and not collaborate with their classmates. Play the video three times, allowing one-minute breaks for students to write their answers.
Write the transcript on the board, without punctuation marks or capital letters. Ask one student to come to the board first and add marks or capitals on what she thinks is the first sentence, consulting her paper and copying the answers she wrote during the clip. If she makes a mistake, do not correct her immediately. Instead, play back the clip on the specific spot. If, for example, the student has placed a period instead of an exclamation mark, replay the video, to show her that the character expresses enthusiasm. Have other students come to the board in turn to add capitalization and punctuation to the rest of the sentences.
Apart from capitalization after a period or at the start of quoted sentences, it is not possible to understand when to capitalize a letter just by listening to a speech. For this purpose, after you have cleared the punctuation marks on the transcript, work on cases students omitted to capitalize or capitalized incorrectly. For example, they may have kept the lower-cases in "south," even though the word refers to southern states, or capitalized a season, such as "Spring."