What does sea level mean, and how does it relate to elevation? Objective Students will be able to: • describe elevation. • explore topographic maps to form a clear understanding of elevation. • use sea level as a reference point while describing elevation. • analyze and interpret data to make sense of phenomena using logical reasoning Background Lesson Overview: For this activity students will explore the way topographic maps are used to describe elevation such as “sea level,” “below sea level,” and “above sea level.” Students will compare and contrast side view diagrams of mountains and valle Duration: 90 Minutes.