2. Clip the iron clip on the magnet and put it on the table. Next, clamp the iron clip on the magnet and put it on the table, as shown in the figure below.
3. Put the paper cup, stick and clip with magnet together. Then, put the paper cup, the stick and the clip with the magnet together to prepare the combination, as shown below.
4. Hang the clip on the stick and put it in the middle of the paper cup. Next, hang the clip on the stick and put it in the middle of the paper cup, as shown in the figure below.
5. Tie the small screw with iron wire and wind it on a small stick to prepare for the magnetic levitation test. Then tie the small screw with a wire and wind it on a small stick to prepare for the magnetic levitation test, as shown below.
6. Pick up the clip with your left hand, lift it down, and use the small screw hung by the thread to get close to the paper cup. Then, the left hand picked up the magnet clip and lifted it down, and the right hand picked up the small wooden stick with the small screw tied, and put the small screw hung by the thread near the paper cup, as shown in the figure below.
7. Check the effect of magnetic levitation small production and explore the principle of magnetic levitation through observation. Finally, check the effect of magnetic levitation small production. Through observation, we can see the small screw swinging around the paper cup, just like dancing. When the magnet swings on the stick, the magnetic field will change constantly, which will cause the magnetic force on the small screw to change, thus making the small screw swing continuously.
Extended data:
(1) Made according to drawings, specifications or printed materials.
(2) Masterpieces of science and technology centered on cultivating creativity and developing intelligence.
Mainly to make children's favorite toys, there are the following forms:
(1) The teacher introduced a method and scientific principle of small production, and demonstrated it in kind, which aroused students' interest and students innovated their own production according to this principle.
For example, "chicken pecks rice" is a painting toy made by using the lever principle. When drawing, the two heads of the chicken move in the same or opposite direction, because the position of the stress point and fulcrum of the lever is different. After knowing the truth, the students designed and made many pull rod toys. For example, I went into space by rocket, went fishing with kittens, played table tennis and crossed canyons.
(2) Small technology products that turn waste into treasure. The teacher explained how to use the gears of old clocks and watches and waste toys to design and make new toys. Some students were inspired to complete their own innovative and high-quality mobile toys, such as manual electric roller coasters, electric bumper cars, robots, funny people dancing, owls and mice.
(3) Theme Technology Production Competition. According to different grade requirements, students in each class design and produce, and teams are selected in the class, and then grade competitions are held. For example, the fourth, fifth and sixth grades hold windmill races. We stipulate that the wheels of racing cars must be made of thick paper, and ready-made wheels or other substitutes cannot be used. Other sizes, weights and styles are not limited.
Again, the rubber band power car competition is limited to rubber bands with uniform specifications and lengths, and nothing else is limited. In this way, the students' enthusiasm is very high, and the racing cars designed and produced are also varied, giving full play to their intelligence and cultivating their creativity.
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