Materials: mineral water bottle, battery box, motor, metal clip, ice cream stick, wooden stick, fan blade, double-sided adhesive tape and white latex.

1. Glue the ice cream stick and the wooden stick together with white latex.

2. Stick double-sided adhesive tape on the back of the battery box and the small motor, and stick it on the stick.

3. Install the fan blade on the small motor.

4. Connect the wire of the battery box to the small motor with a metal clip.

5. Insert the ice cream stick in the center of the mineral water bottle.

Brief introduction of science and technology competition

National Youth Science and Technology Innovation Competition; CASTIC (Innovation Competition for short) is a comprehensive scientific and technological competition with a history of 30 years, and it is a national scientific and technological innovation achievement and scientific inquiry project for young people. It is one of the demonstrative and instructive science and technology education activities for primary and secondary school students, and it is a concentrated display form of outstanding achievements of various science and technology activities in primary and secondary schools in China.

In September, 20021year, it was determined by the Ministry of Education as the national primary and secondary school competition for the 20021-2022 school year. The Youth Science and Technology Innovation Competition is a demonstration, guidance and mass activity. The purpose of this activity is to urge young people to deeply understand the relationship between science, technology and society, stimulate their interest in science and cultivate their sense of responsibility to society.