Page 19 - 新思维数学学生用书4 样章

1 Numbers and the number system

Think like a mathematician

The coldest place where people live is

Oymyakon in Siberia.

In 1933 the temperature fell to −67 °C.

It was so cold that people’s eyelashes
froze.

a Investigate the summer and winter

temperatures in different places.

Order the temperatures you find

starting with the coldest.
b Make a poster to show your findings.

c Find examples of temperatures in magazines or on the internet

and add them to your poster. You can include maps, pictures and

graphs.

Compare your poster to others in your class.
What is similar and what is different?

How could you improve the mathematical content?

How could you improve the presentation?

Look what I can do!

I can read and write whole numbers less than zero, for example
−6 is negative 6.

I can understand how negative numbers are used in the real world,

for example to describe a very cold temperature.

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