1. Ingeniously measure the height of the pyramids. The pyramids are famous Egyptian buildings, especially pyramid of khufu. The entire Golden Pyramid used 2.3 million stones, and it took 65,438+million slaves 30 years to build this building. After the completion of the pyramid, the king asked another question, how high is the pyramid? No one can answer this question. The king was furious and threw all the scholars who couldn't answer into the Nile. When the king tried to kill another scholar, the famous scholar tallis appeared and ordered the executioner to stop. The king said, "Can you know the height of the pyramid?" Tallis said, "Yes, Your Majesty." The king said, "Then how high is it?" Tallis calmly replied: "147 meters." The king asked, "Don't talk nonsense. How did you measure it? " Tallis said, "I can show it to you tomorrow." The next day, when the sun was shining, tallis came to the bottom of the pyramid with only a stick. King Qi sneered, "You want to cheat me with this broken stick? If you can't measure it today, you will be thrown into the Nile! " Tallis replied unhurriedly, "If I can't measure it, it's not too late for your majesty to throw me into the Nile." Then, tallis began to measure, and finally, the king had to accept that his measurement was reasonable. Children, do you know how tallis measures? 2. When did the snail climb the well? A snail accidentally fell into a dry well. It lay at the bottom of the well and began to cry. A toad crawled over and whispered to the snail, "don't cry, little brother!" It's no use crying. The shaft wall is too high. If you fall here, you can only live here. I have been here for many years, and I haven't seen the sun for a long time, let alone want to eat swan meat! " The snail looked at the old and ugly toad and thought, "What a beautiful world outside the well! I can never live in a dark and cold well like it! " The snail said to the toad, "Uncle toad, I can't live here. I have to climb up! "How deep is this well?" "Ha ha ha ..., are you kidding! The depth of this well is10m. How can you climb up with such a heavy shell on your back at a young age? " "I am not afraid of suffering, not afraid of being tired. I can always climb out after a while every day! " The next day, the snail ate and drank enough and began to climb the wall. It kept climbing and finally climbed 5 meters at night. The snail was very happy and thought, "At this rate, I can climb up tomorrow night." Thinking about it, it fell asleep unconsciously. In the morning, the snail was awakened by a purr. At first glance, it turned out that Uncle Tu was still sleeping. It was very surprised: "How come I am so close to the bottom of the well?" It turned out that the snail fell asleep and slipped 4 meters from the wall. The snail sighed, gritted his teeth and began to climb again. At night, it climbed another 5 meters, but at night the snail slipped another 4 meters. Climb and climb, and finally the strong snail climbed up the well platform. Can you guess how many days it will take a snail to climb the drilling platform?

3. Controversy between "0" and "1" In the mysterious mathematical kingdom, the two "minor figures" 0 and "1" are often disputed because of who is important. Look! Today, these two little enemies meet in a narrow way, and they have launched another war of words with each other. The thin man "1" spoke first: "Hum! Fat' 0', what's so great about you? Just like 100, what's the use of you two being fat without my thin'1'?" Fat man "0" is not convinced: "Don't be overbearing in front of me. Think about it. Without me, where can you find other numbers 100? " "hey!" "1" is not to be outdone. "No matter how arrogant you are, it doesn't mean anything. Look! 1+0' is not equal to myself. What's your use? ""go! The result of'1× 0' is not me, and your'1'is also useless! " "0" is tit for tat.

"You ..." "1"paused and replied randomly.

That's right.

Change lanes. "Anyway, your' 0' doesn't mean anything!" "This is your lack of knowledge." "0" said unhurriedly, "You see, in daily life, the temperature is 0 degrees. Is there no temperature? For another example, without me as the starting point on the ruler, how can you be'1'?" "No matter how you compare, you can only do the middle number or mantissa, such as 1037, 1307, and you can never lead." "1" said confidently. Hearing this, "0" said more confidently: "This may be, for example, 0. 1, what can you do without my" 0 "to occupy it?" Seeing the fat man "0" and the thin man "1" all blushed, and no one would let anyone, and other people watching were very anxious. At this time, "9" had a brainwave and made a gesture of pause: "Stop arguing, both of you. Look at you, which size is bigger than me? " "This ..." The fat man "0" and the thin man "1" were speechless. At this time, "9" said calmly: "1" and "0". In fact, as long as you stand together, aren't you older than me? "1" and "0" looked at each other, and it took a long time to scratch their heads and laugh. " That's right! The power of unity is the most important! ""No.9 "said earnestly.