The sense of number is the sense of logarithm and quantity, and the sense is the intuitive original experience produced by external stimuli; Enlightenment is the knowledge gained through brain thinking under the external stimulus. The sense of number contains both perceptual components and thinking components.

The understanding of logarithm is generally introduced from the life situation. After simplifying the plot and abstracting the meaning of numbers, students can deepen their understanding of the essence of logarithm by simplifying it again.

Curriculum standards cultivate students' sense of number and emphasize the connection between number and reality, which includes both giving up the realistic background for abstraction and returning to the realistic background for application.

Create a fairy tale situation to cultivate a sense of number, and walk into a real situation to cultivate a sense of number.

Sense of number is the link between mathematics and practical problems. To cultivate children's sense of number, we should not only let them know that number is abstract of quantity, but also let them feel that abstract number is related to quantity.