1, widely used: Wide-angle collocation gun method is suitable for solving various problems, especially in math learning in Grade Three, such as addition, subtraction, multiplication and division of integers, area and perimeter.

2. Flexibility and simplicity: Many mathematical problems can be solved quickly by using wide angle and Cannon method. As long as you master the ideas and steps of this method, you can easily find the answer to the question.

3. Visualization: When using wide-angle and cannon methods to solve problems, it is necessary to use graphical methods to deal with problems, which is more in line with children's visual habits and ways of thinking.