Quadratic roots generally refer to algebraic expressions with the shape of Va, where a is called the root sign. When a≥0, √a represents the arithmetic square root of a; When a is less than 0, the value of √a is pure imaginary. The following is the eighth grade math teaching plan edited by Bian Xiao. Welcome to learn!

16. 1 quadratic radical teaching plan

Teaching methods:

1. Guided discovery method: Through the problem chain carefully designed by teachers, students can have cognitive conflicts, feel new knowledge, establish a score model, guide students to observe, compare and participate in problem discussion, and turn perceptual knowledge into rational knowledge, which fully embodies the role of teachers leading and students as the main body, and plays an important role in realizing teaching objectives;

2. Combination of lecture and practice: In example teaching, guide students to read, compare square roots, get answers to questions with intensive lectures, and conduct layered exercises to cultivate students' reading habits and standardized problem-solving formats.

Studying law:

1, analogy method Through observation and analogy, students can understand the quadratic model and form my effective learning strategy.

2. Reading methods Let students read textbooks and materials, experience certain reading methods and improve their reading ability.

3, group discussion method in the group to exchange views, learn from each other, experience the exchange and cooperation in learning activities.

4. Practice methods Use different practice methods to consolidate what you have learned; Use teaching materials for self-examination and other inspections in the group to improve students' quality.

16. 1 quadratic radical knowledge points

Last class, we learned what a quadratic radical is, so what is its nature? Let's study together in this class.

Second, show goals and learn independently:

Self-study Guidance: Read the contents on pages 3-4 of the textbook carefully and complete the following tasks:

1, please compare with the size of 0, and your conclusion is:

2. Complete the blank space in "Investigation" on page 3, and your conclusion is

3. See how Example 2 uses attributes for calculation.

4. Complete the blank space in "Investigation" on page 4, and your conclusion is:

5. Understand Example 3. If you have difficulties, you can communicate with your peers or ask your teacher.