牛津深圳初中英語七上unit4theworldofnumbers課件(編輯修改稿)
2025-03-31 08:00 本頁面
【文章內(nèi)容簡介】 _____________ _____________ Guess The text is about the ______ of numbers and the descriptions(描述 ) of three ________ _______ . Ancient numbers Zero calculating machines Numbers: Everyone’s language history calculating machines Skimming Before reading: Exercise B ago, there were different ways of writing numbers. Egyptians first invented the 1 to 9 system of numbers. zero is not a number. zero is an especially important number. make it easier for us to calculate. brain is an important part of your body. Intensive reading: did people in ancient times count in the same way? They nearly all . 2. Which system of numbers did the Indians invented? The system of . 3. What invention helped
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