1, the concept of number sense.
Sense of number is the basis and origin of mathematical cognition. This concept was first put forward by Tobiastandzig (1954) in his book Numbers: The Language of Science. He believes that the sense of number is the ability to recognize the change of quantity in a set. This ability can make people realize this change when adding or deleting something in a small collection.
A sense of number can literally be understood as a sense of number. French psychologist Dehaene first introduced the concept of number sense into the research field of psychology. He believes that number sense is the ability to quickly understand, estimate and manipulate quantities.
2. The formation of number sense.
Sense of number is related to number, and the formation of sense of number is naturally inseparable from number. In early childhood, children learn independent digital knowledge by observing, listening, reading and imitating writing, knowing that a person has a head, two eyes, two ears, a nose and a mouth.
Through repeated practice, we can combine abstract numbers with physical substances to form the concept of numbers.
The function and judgment dimension of number sense;
1, the role of number sense.
The sense of number emphasizes a kind of perception of logarithm, which is a kind of overall perception and grasp of logarithm, so the sense of number includes both primitive and empirical perception components and thinking components.
The thinking ability cultivated by number sense is an important link for children to quickly identify numbers. Using numbers and operation rules for fast and flexible calculation is the basis and premise for forming and developing various mathematical abilities such as operation ability and data analysis ability.
2. The judgment dimension of number sense.
Counting (counting): including sequential counting, reverse counting and integer counting; Recognition: including the area fraction, named number and adjacent number of integers; Quantitative relationship: including the corresponding relationship and equal relationship between numbers and things; Quantity comparison: including finding out the maximum quantity and the minimum quantity, who has more and who has less.
Quantitative estimation: quantitative estimation is the core component of number sense, including addition and subtraction, verbal calculation, visual inspection and so on.