Here's a song/rhyme to focus on the pronunciation of the past tense ending -ed. There are three audio tracks to download: the poem read aloud; the poem read aloud with backchained drill repetitions for students to pause and repeat, and finally, the poem as a song lyric accompanied to music. There is also a puzzle version of the first half of the song called Nightmare Hotel puzzle spelling. In this version, the song is spelt as it sounds and your learners must try to work out what the correct wording is before listening. More pronunciation ideas? See this article.