Lemon Tree is truly an iconic song for teaching students English. It's fun and loaded with language beginner and intermediate learners need.
Here are a few resources for teaching it. Also see this amazing version done by an elementary school class from Korea. So creative!
Use the lyric listening cloze sheet attached. Also, the ppt version and a ppt version to play Last One Standing with the song.
Here is the elementary student version. Just amazing.
Here is a cool worksheet with a song rewrite activity at the end. Students write their own verse and then sing it after!
Also try these activity sheets for the song.