Photo Album Of A Chinese Man Visiting A Canal As He Learns English.

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A canal at Trevor in North Wales, might not be a typical classroom for English lessons, but it is certainly more interesting. Learning english for a foreign student is made more enjoyable by visits to places of character, where answers to subsequent questions might be more easily given. Each picture of the visit to the canal becomes the subject of questions in later lessons. What is a canal? What is a footbridge? What is an aqueduct? It is far easier to explain the meanings if there is a picture and the student learning English has visited the subject matter.

''''' In more recent times, aqueducts were used for transportation purposes to allow canal barges to cross ravines or valleys. During the Industrial Revolution of the 18th century, many aqueducts were constructed as part of the general boom in canal-building. In modern civil engineering projects, detailed study and analysis of open channel flow is commonly required to support flood control, irrigation systems, and large water supply systems when an aqueduct rather than a pipeline is the preferred solution. The aqueduct is a simple way to get water to other ends of a field. In the past, aqueducts often had channels made of dirt or other porous materials. Significant amounts of water are lost through such unlined aqueducts. As water gets increasingly scarce, these canals are being lined with concrete, polymers or impermeable soil. In some cases, a new aqueduct is built alongside the old one because it cannot be shut down during construction. Src: Wikipedia.com '''''