1, teaching breadth

Meaning: the breadth of classroom teaching refers to the horizontal capacity and scope of the classroom, with wide classes and wide knowledge points.

2. Teaching density

Meaning: the so-called teaching density refers to the knowledge that teachers impart to students in a unit time, which can be days, months and so on.

3. Students' attention

Meaning: Students' attention means that students can only concentrate on one thing when doing things in the process of learning.

4. Teaching rhythm

Meaning: Teaching rhythm refers to the form in which various comparable components appear alternately regularly in the teaching process. These comparable components mainly include the density, speed, difficulty, emphasis and intensity of teaching.

5. Teaching order

Meaning: Teaching sequence refers to the procedure made according to the principle of the order of teaching objectives in teaching. In a course (a course or a group), a project (a unit), a classroom and a class, it shows the order of completing a specific goal.

Teaching time:

"Teaching time" refers to the product of reconstructing time by the interaction between educators' own educational ideas and the cognition and emotion of the educated in the teaching situation. Teaching time is a multi-dimensional and multi-level structure and functional system. Teaching time is classified from five dimensions: teaching density, students' concentration, teaching rhythm and teaching order.

This paper puts forward the optimization strategy of teaching time management based on five value orientations: humanistic orientation, artistic orientation, efficiency orientation, control orientation and generation orientation, in order to give full play to its time operation efficiency, optimize classroom teaching and promote students' all-round development.