(
课件网) Unit 4 Inventions 沪教牛津版八年级上册 Key question 主题范畴：人与社会 How have different inventiond changed the way we live Reading I Unit objectives I can: identify important inventions in history. talk about some interesting inventions in our daily lives. describe my ideas for a new invention. understand the features of great inventions. 理解伟大发明的特点。 识别历史上的重要发明。 谈论我们日常生活中一些有趣的发明。 描述我对新发明的想法。 crewed spacecraft hot-air balloon safety bicycle car steam locomotive plane wheel What are these inventions called Lead-in wheel hot-air balloon steam locomotive safety bicycle; car plane crewed spacecraft Look and match Pair work: Discuss in pairs which invention is the most important and why. Which do you think is the most important invention Why I think ... is the most important invention because ... How has the wheel changed the way we live move easily carry more things make work easier travel faster go farther ... The wheel Brainstorming Pre-reading Read the article about the wheel and find out how this invention changed transport around the world. Look at the title and the pictures. 1. What is the article mainly about 2. What do you think the word “wonder” in the title means When the first humans decided to leave their homes over 100,000 years ago in search of new places to live and better sources of food, they did it on foot. Humans continued walking across the globe for the next 94,000 years, until about 6,000 years ago when a number of important changes took place. For instance, in the Central Asian country of Kazakhstan, people started to ride horses. Although this meant that people could travel further and faster, transporting large amounts of goods was still a difficult job. That all changed, however, a few hundred years later with the invention of the wheel. Who first invented the wheel We will never know for sure, but the inventors probably first used wheels to make pottery. Later they realized that they could also use them to transport people and things. They soon attached wheels to horse-pulled vehicles. Farmers were suddenly able to transport their goods to markets far away. This invention increased national and international trade. The wonder of the wheel The wheel changed the way villages, towns and even countries did business with each other but it wasn’t perfect. The roads were old walking paths. These old paths quickly became extremely difficult to use in wet weather. As a result, the first roads made of stone appeared after the arrival of the wheel. The Romans then invented new road-building techniques. The new roads were very good, and we still use some of them today. The wheel not only changed the way humans move, but it also allowed us to build all types of amazing machines. Windmills, clocks and other machines all use wheels, and the Industrial Revolution depended on the wheel. Even in our digitalized world, we still ... ...
