Module5 A Trip Along the Three GorgesPart One Teaching DesignPeriod 1 Reading--A Trip Along the Three Gorges■Goals ● To learn to read passages about the Three Gorges● To learn to read with strategies■ProceduresStep 1: Warming up by defining gorgeA canyon, or gorge, is a valley walled by cliffs
Most canyons originate by a process of long-time erosion from a plateau level, with a stream gradually carving out its valley
The cliffs form because harder rock strata that are resistant to erosion and weathering remain exposed on the valley walls
Canyons are much more common in arid areas than in wetter areas because weathering has a lesser effect in arid zones
Canyons' walls are often formed of resistant sandstones or granite
Step 2: Before you readPlease go over the word list for thi