1, learn simple collocation, understand and master the diversity of strategies and methods to solve simple collocation problems, and improve the ability of observation, analysis and reasoning.

2. Try to solve practical problems in life through collocation, so that you can think about problems in an orderly and comprehensive way and feel the wide application of mathematics in real life.

3. Develop good habits of cooperation, thinking, listening and expressing in mathematics activities. [Teaching Focus] Master the orderly collocation method and solve practical problems with what you have learned.

[Teaching Difficulties] Cultivate students' awareness of thinking about problems in an orderly and comprehensive way.