Idiom of the Week Posters - Classroom Bulletin Board Decor Idiomatic Expressions: Although idioms are a part of everyday speech, they are often misunderstood by our students. These idiom posters allow teachers to present one idiom per week, accompanied by a clear definition, and an example to help students better understand the meaning of common idioms. This is particularly beneficial for ESL, EAL, ESOL classrooms, though it is versatile for use with any student audience. Save by grabbing this i