Keywords: wonderful mathematics, grade three.
This article is suitable for: the third grade of primary school.
Composition source:
Wonderful mathematics
The kingdom of mathematics is colorful and magnificent. It's like an endless sea. In life, we often use mathematics, and when buying and selling goods, we will use mathematics; Building a house will use mathematics; When calculating data, mathematics will be used ... It seems that mathematics is really a wonderful course!
I remember one day, my father bought a big watermelon. Drooling, I picked up a fruit knife and prepared to cut it.
"Wait!" Dad stopped me. "Before eating melon, I'll test you a question!" " ""well, I have exam questions. It's really troublesome. Tell me quickly! "Looking at round watermelons but not eating them is appetizing.
"Nine guests came to Lele's house, and Lele cut a watermelon into nine pieces, one for each. After the guests left, Lele found 10 pieces of melon skin. What is this? " Dad said. As soon as I heard it, my thoughts were confused. Can nine melons have ten skins? What the hell is going on?
I pointed to the watermelon, thought about it, drew a picture on the toilet paper, and made a gesture on the melon with a knife, but I still couldn't remember it.
Dad reminded me: "consider the structure of watermelon." The structure of watermelon? Ellipsoid, melon skin and pulp are connected. I thought about it and finally understood and found the answer.
"Cut it into a well shape, right?" I am proud to say.
Dad gave me a thumbs-up sign. "Why?"
"Because the watermelon in the middle has skins at both ends and pulp in the middle, there will be two skins left after eating!" I said with a smile.
"Baby son is so smart, cut the melon!" Dad deliberately cut the melon into a "well" shape to verify the correctness of this question. My father and son ate the melon.
From this little thing, I know that there is mathematics everywhere in life, from cutting melons to our daily life.
It is mysterious; Fascinating; It makes us think; It inspires us to think. Mathematics is really a wonderful and magical knowledge!