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Format: 16
ISBN:9787 12 1 150722
Bar code: 9787121150722.
Product size: 23x16.8x1.4cm.
Product weight: 399 grams
brief Introduction of the content
Is mathematics difficult and boring? Do you want to be smarter? Can't find the answer you want to know? For young readers, all kinds of questions are gathered in one book. Satisfy their curiosity and let them accumulate more knowledge. This is "100 Why Children Want to Know Most (Comic Mathematics)" edited by Jin Xianzhen! Mathematical knowledge information becomes an interesting question. Just like playing games, answering questions naturally makes learning interesting. Come on, let's shout together. "Come out, I want to know the question!" 100 why do children want to know most (cartoon mathematics) selects 100 mathematical knowledge that children want to know most, such as "How did the ancient Egyptians represent numbers? Why do Arabic numerals use decimal system to represent numbers? Who is the German mathematician known as the computational genius? " This kind of common problems in daily life, such as asking questions and answering questions, tell children the common mathematics knowledge in life through vivid and interesting cartoons.
catalogue
0 1 How did the ancient Egyptians represent numbers? / 6
Why do Arabic numerals use decimal system to represent numbers? /8
How did primitive people calculate it? / 10
Why is the sign of addition+and the sign of subtraction-? / 12
Who is the German mathematician known as the genius of calculation? / 14
Why are all dice in the shape of a regular hexahedron? / 16
Why do bees build hexagonal homes? / 18
In ancient times when there were no rulers and compasses, how could people draw figures? /20
Why doesn't the tripod shake? /22
What is the earliest number of 10? /24
Why are 1 1 eggs rectangular? /26
12 Can I multiply with my fingers? /28
13 Add all the scores indicated by the eye of Horus. How much did you get? /30
14 In ancient times, did you use the body of a king to measure the length? /32
15 what did Galileo find when he saw the swaying chandelier? /34
16 which country hates the number 13? /36
17 does the number 7 really bring good luck? /38
18 what was the calculator used in ancient China and Korea? /40
19 when did Korean ancestors begin to recite multiplication tables? /42
Who was the earliest female mathematician? /44
2 1 whose mido? /46
Is the number 22 representing light, order and happiness odd or even? /48
Why is the maximum central angle 360 degrees? /50
How should beanstalk divide the level of 10 liter into 5 liters? /52
Which country first wrote decimals? /54
Is decimal notation the same or different in every country? /56
What are the math books that form the basis of oriental mathematics? /58
How to deal with smart donkeys? /60
What's the biggest number in the world? /62
If the newspaper is folded 50 times, what is its thickness? /64
3 1 How did the ancient Romans calculate with Roman numerals? /66
What is the farthest angle that a shell can fly? /68
How did our ancestors solve equations? /70
Is the corner with an opening at one end also a figure? /72
Who contains the fewest quadrilateral types among quadrilaterals? /74
What does the Star of David, which consists of two regular triangles, symbolize? /76
In ancient times when there was no protractor, how did people draw a right triangle? /78
38 1 How many Sundays are there in 365 days? /80
How many times do the long and short hands of a clock meet each other every day? /82
What is the number that can be represented by arranging points in a regular triangle? /84
4 1 Does King Sejong, who created Korean, also study mathematics? /86
In elementary arithmetic, what counts first? /88
Can you answer the math problems in Korean textbooks? /90
What is the number composed of divisor and dividend? /92
What is the earliest math book in the world? /94
What is the smallest number unit? /96
Are trajectories that will never intersect parallel lines? /98
How big is Noah's Ark in the Bible? / 100
Who was the math teacher of the Pharaoh of Egypt? / 102
There are quadrilateral windows, why not triangular windows? / 104
The jar of 5 1 is round. Why is the canned ham square? / 106
After a few steps, we can know all the people in the world. / 108
What is the number of 53 that is neither greater than 4 nor less than 4? / 1 10
What does affinity mean? / 1 12
Are the patterns of airplane tires the same as those of automobile tires? / 1 14
Can animals also recognize figures such as circles, triangles and quadrangles? / 1 16
How many regular polyhedrons are there with the same faces? / 1 18
What shape structures are placed on the breakwater to stop the waves? / 120
Why are manhole covers all round? / 122
Why is the web used faster and faster? / 124
6 1 When there is no umbrella, what can I do to avoid getting wet? / 126
Who was the first person to measure the circumference of the earth? / 128
Why is pizza made into a circle? / 130
What shape is a baseball with its skin spread out? / 132
If you want to multiply it smaller, what number should you multiply it by? / 134
How old did the Greek mathematician Diophantu live? / 136
How high is 67 1 1 foot? / 138
How should the 17 camels of the 68 3 brothers be distributed? / 140
Did Korea use scores in ancient times? / 142
What is the traditional game played by graphics? / 144
7 1 What is the easiest way to measure the height of Building 63? / 146
What shape is a spider web? / 148
How much do you get if 73 0 is divided by 0? / 150
Is the British flag symmetrical up and down or left and right? / 152
Is the human body the same and symmetrical? / 154
Which of the following characters is symmetrical? / 156
What's the math secret hidden in the roller coaster? / 158
If the population increases, will the earth become heavier? / 160
Want to know the land area of Korea, how to calculate it? / 162
How many kilograms of 300 stone rice did Shen Qing get? / 164
8 1 What should I do if I want to count 65438+ billion won coins quickly? / 166
How much food do we eat, will we gain weight? / 168
If not, can you know how many grains there are in a bag of rice? / 170
Who was the first person to win the Nobel Prize in Mathematics? / 172
Why is a thermos bottle cylindrical? / 174
What is the shape of the pyramids in ancient Egypt? / 176
According to the ID number, how do you distinguish a man from a woman? / 178
Why do foreign VIPs show 2 1 salute when visiting? / 180
The sum of diagonal numbers is the same. What kind of game is this? / 182
How do you know that it is a book published in Korea according to the book number? / 184
9 1 How long is the Great Wall of Wan Li? / 18 6
Why is the middle of our soles arched? / 188
Gulliver, the height is 12 times that of lilliput. How many times do you eat it? / 190
How to calculate the body surface area? / 192
What is the most beautiful golden ratio? / 194
Are ants stronger than people? / 196
What is the way to get out of the maze safely? / 198
Who is the mathematician who gave his life for the circle? /200
What is the probability that the Loch Ness monster exists? /202
100 What is the probability of winning 1 in the lottery? /204