1) The lesson plan aims to teach students about idiomatic expressions, theme diagramming, and reading comprehension through analyzing the short story "The Blanket."
2) Students will define idiomatic expressions, match idioms to their meanings, read and diagram the theme of the story, and answer comprehension questions about key details and themes.
3) For evaluation, students will fill in a cloze test with suitable idioms and write a letter expressing love using idiomatic expressions.