When Gauss was still in the second grade of primary school, one day his math teacher wanted to take time out of class to deal with some personal affairs. So I'm going to give the students a difficult problem to practice. His topic is:1+2+3+4+5+6+7+8+9+10 =?

Because addition has just been taught, the teacher thinks it will take a long time for students to write this problem. I can also take this opportunity to deal with the unfinished business, but in a blink of an eye, Gauss has stopped writing and sat there doing nothing. The teacher saw it and called Gauss angrily.

But Gauss said he had figured out the answer, which was 55. The teacher was startled and asked how Gauss worked it out. Gauss replied, "I just found out that the sum of 1 and 10 is the sum of1,2 and 9,1,3 and 8,1/kloc-0. And because11+1+11+11= 55, that's how I worked it out. " Hearing this, both teachers and students gave Gauss a thumbs-up sign. Later, Gauss grew up and became a great mathematician.

Little Mathematicians Chapter 2

Pascal, a great French mathematician and physicist, not only liked to ask why when he was a child, but also liked to delve into it by himself to find the answer to the question. Once, Pascal was playing outside the kitchen and heard the chef jingle the dishes. This voice caught Pascal's attention.

He thought, if the knock made a sound, why didn't the sound disappear as soon as the knife left the plate? He did the experiment by himself. He found that the sound continued after knocking on the plate, but as long as he pressed the edge of the plate with his hand, the sound stopped immediately. Pascal was pleased to find that the most important thing in the original sound was vibration, not percussion. The blow has stopped. As long as the vibration doesn't stop, it can still make a sound.

In this way, Pascal discovered the principle of acoustic vibration at the age of 1 1 and began scientific exploration. He was able to publish a mathematical paper at the age of 16, developed the world's first mechanical computer at the age of 22, and completed the famous vacuum experiment at the age of 24, all of which were inseparable from his love for the brain since childhood.

Little Mathematicians Chapter 3

Once upon a time, an old man said to his three sons before he died, "I can't do it." There are only seventeen trees in our house. After I die, the boss will be divided into half, the second child into one third and the boss into one ninth. Besides, no tree can be cut down. "With these words, the old man died.

The three brothers were very sad when they saw their dead father. So they talked about burying their father. They also discussed how to divide the tree according to father's instructions and the old man's will. They can't be separated. The three brothers are at a loss, and no one can do anything.

However, just when they were at their wits' end, a clever child passed by and solved the problem easily. Let's look at his solution. The children and three brothers said, "If we want to use existing trees, we can't separate them according to your father's instructions, so we need to use outsiders' trees." Hearing this, the three brothers were still puzzled, so the children continued to answer questions for them.

Solution:

Add points from the neighbor's tree, 17+ 1= 18 (tree). Half of the eldest: 18 is the third of the second: 18.

One is 6 (tree): one ninth of 18 is 2 (tree) 9+6+2, which is exactly 17. Finally, return the neighbor's tree to the neighbor.