This lesson plan aims to teach English IV students about idiomatic expressions. It will define what an idiom is and have students construct sentences using example idioms. Students will be grouped and asked questions to test their understanding of idiom meanings. For evaluation, students will determine the meanings of underlined idiomatic expressions in sentences and identify the correct answer. As an assignment, students must write a 5-10 sentence composition describing a memorable experience or place visited using sensory details.