Preparation materials: cardboard, two-legged nails, scissors and glue sticks.

1. Prepare two colors of cardboard, and put the words of various tools in an easy-to-get place, as shown below.

We need to cut the cardboard into two circles with different sizes, cut the clock numbers on the smaller one, and then cut the long minute hand and the short hour hand.

3. Stick the circular cardboard on the outline, and don't cross the boundary of the circle, as shown in the figure below.

4. Then paste the frame of the number on a small disc, and be careful not to paste it wrong in the process of pasting.

5. Fix two feet on the back of the dial through the hour hand and minute hand.

6. Finally, this simple, easy and beautiful Jason Chung was made.

Matters needing attention in making first-class clocks and watches:

Know the time unit: the first-year students mainly study hours and minutes, so the clocks and watches made only need to have the display of these two time units.

Pointer design: the pointer can't be fixed, but must be made to move at will.

Material selection: you can choose some easy-to-operate and durable materials, such as cardboard, colored pens, ultra-light clay, PVC pipes, etc.

Clock shape: Common clock shapes are round and square, which can be selected according to students' preferences.

Teaching method: Through observation, operation, communication and other activities, students can understand the composition of the clock face and know and write the whole time.

Safety factors: During the production process, it is necessary to pay attention to the safe use of tools, and pay attention to safety when using scissors to avoid cutting fingers.

Manufacturing process: All required materials and tools need to be prepared and manufactured according to the predetermined design scheme. In the production process, we should pay attention to the accuracy of time, and don't forget the position of the hour hand and the minute hand.

Observation ability: To make a clock, you need to observe the position of the hour hand, minute hand and second hand to accurately judge the time indicated by the clock.

Hands-on ability: Hand-eye coordination can be exercised by manual operation, such as holding hands.

Logical thinking ability: to make a clock, you need to know the structure of the clock, the movement law of the hour hand, minute hand and second hand, and the relationship between them.

Observation and analytical reasoning ability: through practical activities such as hands-on and observation, students can realize the close relationship between mathematics and daily life and the pleasure of learning mathematics.

Sense of cooperation: In some cases, such as making large clocks and watches, it may be necessary to work as a team to exercise students' cooperative ability.

Emotional attitude and values: such as feeling the preciousness of time, forming a good habit of cherishing time, getting the happiness of success from the problem of time, realizing that mathematics is around, and enhancing mathematics interest.