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课件网) Unit 2 Numbers More practice Read the title, the first paragraph and the sequence words at the beginning of Paragraphs 2-5. Then make a spidergram. Counting before numbers tokens made from clay or small stones fingers and toes marks on sticks and bones b a c d the Hindu-Arabic system c d a b Read the first sentences in paragraphs 2-5 and then match the pictures below with the words in the box. Then put the pictures in the correct order. At first, people used their fingers, and even their toes. Then people began to use tokens made from clay or small stones. This developed into tools like the abacus. Look and match Read the article and complete the table. Things people used What to count Examples fingers and toes (small) marks on sticks and bones tokens made from clay or small stones the abacus systems of written marks small numbers bigger numbers even bigger numbers the days of the month the amount of food the number of animals the Hindu-Arabic system (0-9) different numbers However, they could only count small numbers in this way. This helped them count bigger numbers. This helped them count even bigger numbers. by using their fingers and even their toes Making small marks on sticks and bones Using tokens made from clay or small stones Find the facts This developed into tools like the abacus. … and this led to the Hindu-Arabic system (0—9). We are still using this system today. Putting the tokens on pieces of string developing systems of written marks the Hindu-Arabic system Finally, they began to develop(4)_____ This led to (5)_____ used their fingers, and even their toes. small marks on sticks and bones. First, people used(1)_____ After that, they made(2)_____ Then they used(3)_____ tokens made from clay or small stones. systems of written marks. the Hindu-Arabic system(0-9). A Read the online article and then complete the flow chart about the development of counting methods. Make a spidergram small marks on sticks and bones tokens made from clay or small stones systems of written marks Counting before numbers fingers and toes 1. They used them to count things like the days of the month, the amount of food and the number of animals they had. 人们利用它们来数数，像每个月的天数，食物的数量还有他们所拥有的牲畜的数目。 amount 用作名词，意为“数量；总额”，通常用于a (great / large) amount of 短语中，表示“大量；许多”，其后通常接不可数名词。 例如： 他赚了很多钱。 He made a large amount of money. Language points 注意the amount of 和the number of 的区别： 这两个短语都表示“……的数量”，其区别在于:前者与不可数名词连用，而后者与可数名词的复数形式连用。例如: 降雨量影响农作物的生长。 The amount of rain affects the growth of crops. 在过去的五十年里，老虎的数目锐减。 The number of tigers has reduced sharply in the last fifty years. 2. They often put the tokens on pieces of string so that they could carry them around easily. 他们经常把代币悬在绳子上，这样他们可以轻松地四处携带它们。 【句型】 ... ...
