Classroom is the main position to cultivate students' core literacy, and the design of teaching objectives is the direction to implement classroom reform. This paper focuses on the subject of behavior-students from the problems existing in the current teaching goal design and several concerns in the design, that is, the three dimensions of the goal.

This teaching mode pays attention to learning methods, detectability of contents, generating space of goals, forms of expression and pragmatic implementation, which not only meets the needs of students' thinking development, but also meets the needs of students' self-awareness, and is of great positive significance to students' self-development and self-value.

Knowing clocks and watches is the content of unit 7 in the first volume of grade one. This lesson is written in the order of "understanding the clock face structure-the method of reading and writing on the hour-the establishment of the concept of time" Asking students to master complete time is the first attempt for students to establish the concept of time, and it also lays the foundation for future "time-sharing" teaching. Textbooks should be compiled from students' life experience, so that students can learn mathematics vividly and concretely.

A first-year student. They are young, active, playful and curious, so they are prone to fatigue and distraction in forty minutes of teaching. According to this feature, in order to catch students' interest and stimulate their curiosity, I adopted the happy teaching method, created the situation and designed colorful courseware for students to learn in the situation created by the courseware.

At the same time, I also adopted the discussion and cooperation teaching method, so that children can discover the structure of the clock face through cooperation and communication, which not only enlivens students' thinking, stimulates their cognitive interest, but also gives full play to their learning enthusiasm.