Lesson plan.
Meaning: This means that someone is making detailed proposals for a lesson or class period. It's like saying, Someone is preparing for a lesson.
Choice of Words: Lesson is a common noun that refers to a unit of instruction or a single class period. Plan is a verb that means to make detailed proposals for doing or achieving something. When put together, "Lesson plan" implies that someone is making detailed proposals for a lesson or class period.
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Related Expressions