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Zahlen, Spiralen und magische Quadrate. Mathe für jeden
Matematik pek çok şey için gereklidir.
Aynı gün iki doğum gününe birden davet edilme olasılığı nedir?
Yağmura karşı sigorta yaptırmak isteyenlere sigorta poliçesi satmak kârlı mıdır?
Hiyerogliflerle rakamlar nasıl yazılır?
5 artı 2 ne zaman 1 eder?
Matematiğin anlamı kitabının yazarı Kristin Dahl, matematiğin gizemlerine keşif yolculuğunu sürdürüyor. Sen de ona katıl ve geometrik model, sayı, olasılık, sihirbazlık numarası ve daha pek çok aktivitede denemeler yap! İhtiyacın olanlar: kalem, tebeşir, cetvel, makas, kibrit çöpleri, düğmeler ve çokça kâğıt. Tabii yanında bir arkadaşın olursa daha da güzel!
Biraz yaratıcılık, hayal gücü ve merakla problemleri beraberce çözebilirsiniz.
Fikirlerini sına! Bir problemin çoğunlukla birkaç olası cevabı ve çözümünün genelde çeşitli yolları vardır. Kendine bolca zaman tanı!
Aynı gün iki doğum gününe birden davet edilme olasılığı nedir?
Yağmura karşı sigorta yaptırmak isteyenlere sigorta poliçesi satmak kârlı mıdır?
Hiyerogliflerle rakamlar nasıl yazılır?
5 artı 2 ne zaman 1 eder?
Matematiğin anlamı kitabının yazarı Kristin Dahl, matematiğin gizemlerine keşif yolculuğunu sürdürüyor. Sen de ona katıl ve geometrik model, sayı, olasılık, sihirbazlık numarası ve daha pek çok aktivitede denemeler yap! İhtiyacın olanlar: kalem, tebeşir, cetvel, makas, kibrit çöpleri, düğmeler ve çokça kâğıt. Tabii yanında bir arkadaşın olursa daha da güzel!
Biraz yaratıcılık, hayal gücü ve merakla problemleri beraberce çözebilirsiniz.
Fikirlerini sına! Bir problemin çoğunlukla birkaç olası cevabı ve çözümünün genelde çeşitli yolları vardır. Kendine bolca zaman tanı!
64 pages, Hardcover
First published January 1, 1994
6 people want to read
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Displaying 1 - 3 of 3 reviews
October 3, 2015
Pettson the Mathematician
It was a lovely sunny day on Pettson's farm. Gustavsson came up the path and knocked on the door.
"It's open!" said Pettson. He sounded a little irritated. Gustavsson opened the door and went in. There was Pettson, sitting at the kitchen table with his cat Findus. He had a book in front of him. There was paper everywhere.
"Doing our tax returns early, are we?" asked Gustavsson.
"Certainly not!" replied Pettson. Findus just rolled his eyes.
"Well, what are you doing then?" asked Gustavsson. He looked more closely at the paper. No, it wasn't tax returns. Some of it was cut up in funny shapes and some of it had odd writing, numbers and letters and strange pictures.
"Is it a game?" he asked. "How do you play?"
Pettson sighed. "Well, it's not really a game," he said. "Or maybe it is. I'm trying to learn mathematics."
"Aren't you a bit old for that?" asked Gustavsson.
"Not at all!" said Pettson. "You're never too old to learn mathematics. Here, let me show you some of the things I've learned this morning!" He grabbed one of the pieces of paper and showed it to Gustavsson. "You see this?"
"What is it?" asked Gustavsson cautiously. You never knew with Pettson.
"It's a quadrilateral," said Pettson airily, just as though he'd always known the word. "Look, I put a dot right in the middle of each side... and I connect them up to get another quadrilateral... and you see?"
Gustavsson didn't see at all. "What?" he said grumpily.
"Well, it's a parallelogram!" said Petsson. "How about that?"
Gustavsson started backing away. But now Pettson had started there was no stopping him.
"Look at these shapes!" he said, grabbing Gustavsson's sleeve.
"It's a jigsaw, is it?" asked Gustavsson. He tried to pull his sleeve away, but Pettson was holding it very tightly.
"No, of course not," said Pettson. "It's a proof of Pythagoras's theorem!" With his free hand, he moved the shapes around. Findus helped him.
"You see?" he said, when he was finished. "You see? Isn't that amazing?"
Gustavsson still didn't see anything. He wondered when Petsson would let go.
"Think of a number!" said Pettson.
"Like four?" asked Gustavsson.
"No, no!" said Petsson. "Think of a number and don't tell me!"
"Okay," said Gustavsson tiredly.
"Right," said Petsson. "Multiply it by five. Then add six. Then multiply it by four. Then take away four. Then multiply it by five again. Okay?"
"What?" asked Gustavsson. He was starting to feel quite dizzy. Pettson did it again slowly, one bit at a time.
"Now how much is it?" asked Pettson.
"1400," said Gustavsson, though he wasn't very sure he'd done the sums right.
"You were thinking of thirteen!" said Pettson without even pausing for breath. "I bet you were wondering how I knew that?"
"No, I wasn't," said Gustavsson truthfully.
"Well, it's not just a trick," said Pettson. "It's algebra. And I can prove it works."
"I suppose that book must explain it," said Gustavsson. "Do you think I could look at it?"
Pettson let go of his arm to pick it up, and Gustavsson rushed towards the door.
"So sorry!" he said over his shoulder as he left. "Just remembered I had something I needed to do." He shook his head sadly to himself. Poor Petsson. This was even worse than usual.
[Zahlen, Spiralen und magische Quadraten isn't really a Pettson and Findus book, but the illustrator is the same and it's impossible not to keep thinking of them...]
It was a lovely sunny day on Pettson's farm. Gustavsson came up the path and knocked on the door.
"It's open!" said Pettson. He sounded a little irritated. Gustavsson opened the door and went in. There was Pettson, sitting at the kitchen table with his cat Findus. He had a book in front of him. There was paper everywhere.
"Doing our tax returns early, are we?" asked Gustavsson.
"Certainly not!" replied Pettson. Findus just rolled his eyes.
"Well, what are you doing then?" asked Gustavsson. He looked more closely at the paper. No, it wasn't tax returns. Some of it was cut up in funny shapes and some of it had odd writing, numbers and letters and strange pictures.
"Is it a game?" he asked. "How do you play?"
Pettson sighed. "Well, it's not really a game," he said. "Or maybe it is. I'm trying to learn mathematics."
"Aren't you a bit old for that?" asked Gustavsson.
"Not at all!" said Pettson. "You're never too old to learn mathematics. Here, let me show you some of the things I've learned this morning!" He grabbed one of the pieces of paper and showed it to Gustavsson. "You see this?"
"What is it?" asked Gustavsson cautiously. You never knew with Pettson.
"It's a quadrilateral," said Pettson airily, just as though he'd always known the word. "Look, I put a dot right in the middle of each side... and I connect them up to get another quadrilateral... and you see?"
Gustavsson didn't see at all. "What?" he said grumpily.
"Well, it's a parallelogram!" said Petsson. "How about that?"
Gustavsson started backing away. But now Pettson had started there was no stopping him.
"Look at these shapes!" he said, grabbing Gustavsson's sleeve.
"It's a jigsaw, is it?" asked Gustavsson. He tried to pull his sleeve away, but Pettson was holding it very tightly.
"No, of course not," said Pettson. "It's a proof of Pythagoras's theorem!" With his free hand, he moved the shapes around. Findus helped him.
"You see?" he said, when he was finished. "You see? Isn't that amazing?"
Gustavsson still didn't see anything. He wondered when Petsson would let go.
"Think of a number!" said Pettson.
"Like four?" asked Gustavsson.
"No, no!" said Petsson. "Think of a number and don't tell me!"
"Okay," said Gustavsson tiredly.
"Right," said Petsson. "Multiply it by five. Then add six. Then multiply it by four. Then take away four. Then multiply it by five again. Okay?"
"What?" asked Gustavsson. He was starting to feel quite dizzy. Pettson did it again slowly, one bit at a time.
"Now how much is it?" asked Pettson.
"1400," said Gustavsson, though he wasn't very sure he'd done the sums right.
"You were thinking of thirteen!" said Pettson without even pausing for breath. "I bet you were wondering how I knew that?"
"No, I wasn't," said Gustavsson truthfully.
"Well, it's not just a trick," said Pettson. "It's algebra. And I can prove it works."
"I suppose that book must explain it," said Gustavsson. "Do you think I could look at it?"
Pettson let go of his arm to pick it up, and Gustavsson rushed towards the door.
"So sorry!" he said over his shoulder as he left. "Just remembered I had something I needed to do." He shook his head sadly to himself. Poor Petsson. This was even worse than usual.
[Zahlen, Spiralen und magische Quadraten isn't really a Pettson and Findus book, but the illustrator is the same and it's impossible not to keep thinking of them...]
May 22, 2020
Läste naturligtvis denna på svenska, det är en svensk bok. Illustrerad av Sven Nordqvist, precis som den tyska upplagan på bilden. Tänka tal coh söka mönster. Roliga bilder gör matteförklaringarna mer lustfyllda. Smart genomfört.
April 14, 2020
This book sparked my interest for mathematics. Got it for my 12th birthday. I read it in Swedish but I couldn't find the Swedish edition on goodreads.
Displaying 1 - 3 of 3 reviews