On Sunday morning, the small animals in the forest ran to the playground. Their favorite game is the carousel. Look, they soon lined up. ...
At this moment, the little rabbit spoke. She said, "The first one is a little monkey, and I am in the sixth one. How many animals are there between me and the little monkey? " Our little friend, can you help the rabbit solve this problem?
The first child did this: he solved the problem by writing numbers. 1 stands for little monkey and 6 stands for little rabbit, so the middle number is the number of other small animals.
The second child did this: he solved the problem by drawing a circle. The first circle represents a little monkey, the sixth circle represents a little rabbit, and the middle circle represents the number of other small animals.
The third child did it again: he subtracted the number of monkeys and rabbits from the total number of animals (6), and the difference between them was the number of small animals. Namely: 6-2=4. Children are really amazing. There can be many different algorithms for a problem.
However, another problem appeared, and the little rabbit said, "The third is the little monkey, and I am the sixth. How many small animals are there between us? " Can this question beat the students? The answer is: no, it depends on the students' different algorithms. Write numbers, draw circles and calculate formulas.
Later, the little pig and the little turtle came, but after watching such a long queue, the little pig backed out. Piglet said, "When can we wait for such a long queue to play?" The little turtle said, "Let's count how many animals are waiting in line now!" " "
Little rabbit told little pig, "There are five small animals in front of me and six small animals behind me." How many small animals are waiting in line now? "
What about children? There are six rabbits in front, five rabbits in the back, which is (6+5), and rabbits, which is (6+5+ 1= 12).
The little rabbit told the little turtle, "I am the sixth from the bottom and the seventh from the bottom." How many small animals are waiting in line? " Although I am a little turtle, I climb a little slowly, but the calculation problem is very fast. Look (6+7- 1= 12), that's right!
After being persuaded by the little turtle, the little pig and the little turtle are waiting happily at the back of the team. I believe they will have a good time!
Children, "queuing" is not really distressing. In our life, it also has a surprising side. Queue shows the beauty of its order all the time in every place of life: queuing to get on and off, beautiful campus environment, happy big recess, heroic military team and so on, all of which are full of the beauty of order.
1: Learn to be like Li Qian, an amiable teacher;
2. Let our study truly integrate theory with practice and return to life from life;
3. In class, let students participate and let them explore their own knowledge.