Sometimes it is difficult to grasp topographic maps. Here is a clever presentation designed to help your middle school earth scientists understand. Beginning with a side view of a pair of mountains, a graphic guy walks up one slope. As he climbs, each elevation is marked with a line showing where it is equal on both mountains. After the trek, the same pair of mountains is shown from above and transformed into a topographic map. This A+ presentation concludes with a quiz.
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