[Party and mass dynamics] Fun science, build a dream future

In order to cultivate children's interest in scientific knowledge, enrich children's extra -curricular life, and stimulate children's curiosity of exploring scientific knowledge. On the morning of August 19th, Xiaoying Street Party Mass Service Center and Xiaoying Lane Community and Hangzhou Community Science Popularization Lecturer Group carried out a popular science lecture activity. Through the experience of trainees and scientific explanations, children can learn more in the event. Science principles.

Experiment 1 | Cross A4 paper

At the beginning of the event, Teacher Wang Difei first demonstrated the paper -cut process for the children, using a pair of scissors and a piece of A4 paper to cut out the ring style, and the ring must be intact and non -damaged, not knotting and bonding. After watching the demonstration process, the children started making them by themselves. Although the production process was relatively bumpy, fortunately, everyone eventually made a complete circle and passed the large circle through the body. Crossing A4 paper activities successfully completed! In the end, the smaller the interval between the A4 paper label, the more the number of tailors, the greater the perimeter of the A4 paper, and the larger the paper ring.

Experiment 2 | Mobius Belt

The Mobius belt is a German mathematician Mobius and John Listein found that a note reversed 180 °, and the two ends were adhered to make a paper belt. Not only did the paper strap not be divided into two, but a double paper ring was cut out. Under the teachings of Teacher Wang Dewei, not only did everyone cut out twice the paper ring, but also learned the magic of Mobius.

Experiment 3 | Disappearing flowers and lotus pond moonlight

At the beginning of the third experiment, Teacher Wang Difingfei asked the children to draw a colorful flower on the paper, cut the painted little flowers into a transparent pocket, and then put their pockets in the water and found that the flowers were gone. The teacher told the children that this experiment was very simple, and the principle involved was the refraction and reflection of light. Next, the teacher asked the children to take the flowers out of the pocket and fold the petals of the flower and put them in the water. They will find that the petals are unfolding! Throughout the process, the children were surprised to close their mouths and realized the magic of science.

Experiment 4 | Easy to pull cans acrobatics

Can the cans be touched on the desktop when it is installed? That's right, Teacher Wang Difingfei told the children that the cans that filled the drinks could not be tilted on the table, but when drinking 3/4 of the water of the cans, and then speaking, the cans were placed on the table, and they could successfully stand on the desktop. After trying it, the children really stood up on the table! After that, the teacher told the children that the can be filled with the beverage and the empty jar of the empty can not stand up, but when we filled 1/4 of the water in the cans, the center of gravity and the focus of the easy -to -pull can be on the straight line. At this time, The center of gravity decreases, and the cans can be touched on the table.

The development of interesting science activities not only exercise children's hands -on ability, but also stimulate their interest in science and improve their awareness and longing for science. The event came to an end, everyone took a group photo, and many children also said: "I hope to carry out more interesting scientific activities in the future!"

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