"Standard Equation of Circle" is the knowledge point of compulsory two in senior high school mathematics of People's Education Press. The teaching objectives are as follows:

1, knowledge target

(1) Explore and master the standard equation of a circle in a plane rectangular coordinate system;

(2) The radius and center of the circle can be written from the equation of the circle, and the equation of the circle can be written according to the conditions.

2. Ability objectives

(1) further cultivate students' ability to study geometric problems with analytical methods;

(2) Deepen students' understanding of the combination of numbers and shapes and the method of undetermined coefficients;

(3) Enhance students' awareness of using mathematics.

3. Emotional goals

Using the knowledge of circle to solve practical problems can cultivate students' consciousness of actively exploring knowledge and cooperating and communicating, and stimulate students' learning enthusiasm and interest in the process of experiencing the beauty of mathematics.

Teaching emphases and difficulties:

1, teaching emphasis: the derivation process of the standard equation of the circle and the clarification of the characteristics of the standard equation of the circle.

2. Difficulties in teaching: According to different known conditions, use the undetermined coefficient method to solve the standard equation of the circle.

Refer to the above content: Baidu Encyclopedia-Standard Equation of Circle