unit 2 more practice.pptVIP

Oxford English Period 6 Module 1 Amazing things Oxford English Unit 2 Numbers b a c d Before the invention of written numbers, people used many different ways to count things. 1 2 3 4 5 Finally, they began to develop(4)_______________________________. This led to (5)____________________________________________________. used their fingers, and even their toes. small marks on sticks and bones. A Read the online article and then complete the flow chart about the development of counting methods. While-reading 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) B Are there any other ways of counting? Discuss this with your classmates. Things people used What to count Examples ? ? a d Counting before numbers Before the invention of written numbers, people used many different ways to count things. At first, people used their fingers, and even their toes. However, they could only count small numbers in this way. After that, they began to make small marks on sticks and bones. This helped them count bigger numbers. They used them to count things like the days of the month, the amount of food and the number of animals they had. Then people began to use tokens made from clay or small stones. This helped them count even bigger numbers. They often put the tokens on pieces of string so that they could carry them around easily. This developed into tools like the abacus. Finally, people began to develop systems of written marks to show different numbers, and this led to the