Page 6 - 新思维数学学生用书6 样章

How to use this book

These questions will help 3 Find the odd one out.
1.234 1234 thousandths 12.34
you develop your skills of thinking 123.4 hundredths 123 hundredths and 4 thousandths
and working mathematically. Explain your answer.

An investigation to carry out with a Think like a mathematician

partner or in groups. Where this icon Daphne the dog had four litters of puppies. The mean number of puppies in a litter
was 5. Investigate how many puppies could be in each litter. Find different ways
appears , the activity will help that make the mean 5.
What do you notice about the total number of puppies in each solution where the
develop your skills of thinking and mean is 5?

working mathematically. Specialise by checking that it is true for another solution.
Generalise by explaining what you find out.

Questions to help you Think about your answer. Are there any other possible answers?
think about how you learn. How do you know? Did you think about checking your answer with
your partner?

What you have Look what I can do!

learned in the unit. I can explain the value of each digit in numbers with up to 3 decimal places.
I can multiply and divide whole numbers and decimals by 10, 100 and 1000.
I can compose, decompose and regroup numbers with up to 3 decimal places.

Questions that cover Check your progress

what you have learned in the unit. 1 Hassan counts in steps of 0.4.
His first number is 1.
He counts 1, 1.4, 1.8, …
What is the tenth number in his sequence?

At the end of several units, there Project 4

is a project for you to carry out using Ordering times
what you have learned. You might Put these lengths of time in order, from shortest to longest.
You might like to use a calculator to help you.
make something or solve a problem.
A second Time since you A thousand A decade
were born
seconds
Projects and their accompanying Time for light to Time it takes you
teacher guidance have been reach the Earth A minute to eat a meal 100 000 hours
from the Sun
written by the NRICH Team. NRICH 1000 months A century A day Time it takes
you to say the
alphabet
is an innovative collaboration Time since the
between the Faculties of A month 1000 days last Olympic A fortnight
Games
Mathematics and Education at Time it takes the A year 5 000 000 Time since the
invention of the
Moon to go once
minutes
around the Earth telephone
the University of Cambridge,
which focuses on problem solving and on creating opportunities for students to learn
mathematics through exploration and discussion.

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