1. Make students understand the meaning of equation in specific situations and understand the relationship between equation and equation; A preliminary understanding of the properties of the equation is helpful for us to solve simple equations with the properties of the equation and solve practical problems in one step.

2. In the process of observation, analysis, abstraction, generalization and communication, students can experience the process of abstracting real problems into formulas and equations, accumulate the experience of mathematicizing real problems, feel the thinking method and value of equations, and develop abstract thinking ability and sense of symbols. 3. Make students develop the habit of independent thinking, active cooperation and communication with others and conscious inspection in the process of actively participating in mathematics activities; Get some successful experience, further establish self-confidence in learning mathematics well, and generate interest in mathematics.

Teaching emphases and difficulties:

Finding equivalence relation is the key to solving practical problems with equations, and it is also a difficult point in teaching. Class arrangement:

Equality and equation, the nature of equality and its solution (1) (textbook P 1 ~ 6) 3 class hours, the nature of equality and its solution (2), and solving simple practical problems by listing equations (textbook P7 ~ 1 1) 3 class hours.