The theory of situated cognition and learning and the theory of reflective practitioner are the fundamental bases of foreign language teacher decision making.

This study comes through the following process:design---- practice----redesign----practice according to Situated Cognition and Learning Theory.

Discussions on designs for english extracurricular activities based on the theory of "situated cognition";

Research of instructional design under theory of situated cognition;

Situated Cognition and Situated Learning in Mathematics Class;

Borrowing from the concepts and methods of environmental quality evaluation in environment science, the model of fuzzy comprehensive evaluation on pilots situation cognition was built, and used to evaluate 6 advanced pilots situation cognition.

Objective To resolve the problems of comprehensive evaluation on pilot s situation cognition basing on studying the mission situation.

This solution emphasizes the significance of cognitive situations to belief acceptance,and solves the lottery paradox under the frame of situation semantic theory.

The positive emotion can greatly promote students cognitive learning.

Secondly, it contrasts the cognitive learning process based on the two courses.

On the basis of the discussion of the learning theory associated with CAI,a cognitive learning model for CAI is introduced,an infrastructure of the hypertext courseware in detail is described,which is designed to implement the learning model.