In the first grade of primary school, students learn to know clocks, in the second grade, they learn to know time, in the third grade, they learn hours and seconds. The clock model learning tool used by everyone allows children to operate by themselves and understand the concept of time more intuitively.

Know the learning goal of clocks: know that there are hour hand, minute hand, 12 number and 12 square on the clock face; Learn to always know; Establish the concept of time and cultivate the good habit of observing and cherishing time; Cultivate observation ability.