To find out how many times a number can be divided, we can divide it into 1 and several ... 2 and several ... until several sum 1 to avoid repetition and omission. For example, 5 can be divided into 1 and 42 and 3, 3 and 2, 4 and 1.
"Division and Combination within 10" Knowledge Point
Composition of numbers: A number (except 1) is divided into several and several. Divide it into 1 and a few, and then divide it into 1. For example, the composition of 5 is 1 and 4, 2 and 3, 3 and 2, 4 and 1. When a number is divided into several numbers and several numbers, it should be decomposed in an orderly manner to prevent repetition or omission.
"Division and Combination within 10" Technique
1. First, simulate a scene. The child brought four peaches from home, and now he will give them to two children. How do they divide it? Let the children think for themselves how to divide the four peaches into two plates.
2. Prepare five apples for the children, and let the children try to put five apples on two plates to see if the smart children can give the answers accurately.
3, let the children fill in, the exercises in the textbook, you can prepare props for the children, let the children put them on themselves, and then fill in the appropriate numbers.
4. You can also make some lovely pictures as shown in the figure, so that children can learn how to split numbers and experience the idea of splitting and combining.
Summary of Mathematics Learning Methods in Senior One.
1, listen to the teacher carefully. This is the main reason why I got good grades. Listen attentively, follow the teacher's thinking, don't be distracted, and don't listen at the same time. Secondly, we should pay attention to every word the teacher says, because mathematics is famous for its rigor, and there are serious differences between words, and there are infinite mysteries hidden between words. Pay attention to taking notes when listening.
2. Extracurricular exercises. Confucius Day: "Learn from time to time". Homework after class is also an important part of learning and consolidating mathematics. I pay great attention to the accuracy and speed of solving problems. Accuracy means accuracy, concentrate on completing your homework independently, strive to be accurate once, and correct any mistakes in time.
And speed is to exercise your concentration and sense of urgency. I often do this. I set the alarm clock at the beginning of my homework and put it out of sight, which helps to improve the speed of my homework. I won't be nervous during the exam, and I won't lose sight of one thing.