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Teaching and research

Positive and negative numbers

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[Abstract]:
Knowledge and Skills: Understand how positive and negative numbers are produced; know what is positive and negative; understand the meaning of the quantity represented by the number 0.
  learning target:
  1. Knowledge and Skills: Understand how positive and negative numbers are produced; know what is positive and negative; understand the meaning of the quantity represented by the number 0.
  2, mathematical thinking: the realization of mathematical symbols and corresponding ideas, using positive and negative numbers to represent the symbolic method of the opposite meaning.
  3, solve the problem: will use the cooperation between teachers and students, contact the reality, to stimulate students to learn the enthusiasm of mathematics.
  Focus: the meaning of positive and negative numbers.
  Difficulties: the meaning of negative numbers and the meaning of 0.
  Preparation before class
  Thermometer, pencil case
  Teaching process arrangement
  Activity process and activity content and purpose
  Activity 1 Problem introduction Through activities, students learn that numbers originate in life.
  Activity 2 Activity Arrangement Brings students into the problem situation and leads to problems.
  Activity 3 An example of using more examples to enrich the problem situation.
  Activity 4 Learn the concept of negative numbers to show what is positive and negative.
  Activity 5 Application of Negative Concepts Further understanding of positive and negative numbers.
  Activity 6 Consolidation of the concept of negative numbers A comprehensive understanding of positive and negative numbers.
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