Let students learn to express and exchange information with numbers, which can not only make students realize the value of learning mathematics, but also reflect the sense of numbers. In order to make students feel the digitalization of information, I have created a variety of mathematical activity platforms in teaching. Through activities, let students feel that numbers can express and exchange information, and that numbers are in life. For example, in the teaching of "Knowing Clocks", I designed such an activity platform: I asked students to make clocks, say clocks and set the time, and study in groups on the basis of independent thinking, so that students have more opportunities to show their ideas. Through knowing, reading and writing various clocks, students can gradually acquire and cultivate a sense of numbers.
How to Cultivate Students' Sense of Numbers: Connecting with Real Life
Mathematics comes from practice and returns to practice. Students like to learn some math knowledge related to real life. If familiar examples are easy to arouse students' interest in learning, and every mathematical concept, theorem and formula has its practical background, then in teaching, we should proceed from reality, abstract mathematical concepts and feel new knowledge through practical problems that students are familiar with. For example, when learning the concept of the distance from a point to a straight line, we can use the familiar example of standing long jump to understand it, explain the properties of equations and inequalities with the scales that students are familiar with, and draw a comparison method of line segment sizes from comparing the heights of two students, so that on the one hand, we can learn new knowledge from students' familiar life experience, on the other hand, we can cultivate their awareness of applying mathematical knowledge to practice.
How to cultivate students' sense of numbers: to cultivate students' estimation ability
There are many ways to cultivate students' estimation ability, and questioning and reflection are also effective strategies to cultivate students' estimation ability. In mathematical activities, students should be allowed to obtain mathematical conjectures through observation, analogy and reflection, and further verify, prove or cite counterexamples, so that they can really use mathematical language to question, judge and reflect logically. Students can naturally judge whether the result is correct through questioning and reflection, and accordingly improve the correct rate of students' problem solving. In teaching, teachers should respect each student's personality and carefully design exercises in questioning, judgment and reflection, so that students can cultivate their estimation ability and good sense of numbers in questioning and reflection.