Product Name: KX2022 Hand Crank Water Wheel Car
Product Code: KX2022
Size: 105*125*110mm
Weight: About 30g
Material: Wood + Plastic Pipe + Wire Twist + EVA + Iron Axle
Color: Mixed
Battery: No
Packing: 400pcs
Box Specification: 600*450*550mm

Preface:

In today's society, where children's education is increasingly valued, scientific enlightenment education has gradually become an important topic in the field of education, which is pursued and explored. More and more teachers and parents are beginning to pay attention to cultivating children's scientific literacy from an early age, so that children can develop good personalities and behavioral habits from the beginning. Parent-child interactive crafts can improve the quality of parent-child companionship, improve the relationship between parents and children, and we spend time with our children, without mobile phones, iPads, or televisions, only joy, interaction, and communication. It can cultivate the ability of children to solve problems by themselves. When children encounter problems, they should first see and experience the solution themselves, because parents and teachers solve problems in the process of doing crafts. It can develop children's imagination. In children's world, cars can fly in the sky, and the sun can be green. Playing with DIY crafts can cultivate children's practical ability by using different tools, which fully exercises children's little hands. Brushes, paints, scissors, hot-melt guns, glue"Children are brave to try any tools and to some extent, they are developing different skills. Improving children's self-confidence in the process of handcrafts, we try everything possible together, experience many failures, but we always succeed, which to some extent enhances their self-confidence. Cultivating children's concentration when children explore various tools and handcrafts, they are very focused, and if there is no external disturbance, they can continue to explore.

Experimental Purpose:
1. Guide students to learn how to perform the bicycle wheel experiment.
2. Cultivate students' ability to experiment and think by themselves.

Principle Application:

Experimental Focus: Waterwheel is a type of water lifting facility used for agricultural irrigation. According to historical records, it was invented by the scientist Bi Lan during the Eastern Han Dynasty, which is more than 1800 years ago. It is a precious historical and cultural heritage of our country. Nowadays, waterwheels are quite rare. What were the ancient people using waterwheels for? After learning this experiment, you will know.
Experimental Cognition

The concept of waterwheel, water has power, this power is called hydroelectricity. Waterwheel is an ancient power mechanical device that uses water flow as power. So what is the relationship between the speed of waterwheel rotation and what? One is related to the water difference, the larger the water difference, the faster the small waterwheel rotates. The second is related to the water flow, the larger the water flow, the faster the small waterwheel rotates.

Knowledge Expansion:

The development process and role of ancient water-powered wheel, which transfers water from a lower to a higher elevation. Place the water wheel in water, and it is impacted by the water to rotate. Around the wheel are wooden barrels, which contain water and rotate to the top with the water wheel. Water automatically flows into the water trough and then into the fields. The second method is to use the speed of the water current to rotate the water wheel, which drives mechanical work. For example, automatic pounding of rice, where the water-powered rice mill is a water-powered machine for removing the husk from grain. The prototype of the water wheel appeared in the Western Han Dynasty of China, called the water chisel, which was a water-powered machine for scooping rice. The appearance of the water chisel in the late Western Han Dynasty was also a water-powered machine for scooping rice. The power mechanism of the water chisel is a large vertical water wheel, which is equipped with several board blades, and some interlocked boards are installed on the shaft. The boards are used to move the pulley rod. Each pulley is supported by a pillar with a wooden rod at one end, which is equipped with a round stone pulley. The stone mill in the stone mill is placed with the prepared rice. The water wheel is impacted by the water to rotate, and the boards on the shaft move the pulley rod, making the pulley head move up and down to pounded rice. With the water mill, grain can be processed day and night. Anywhere along the banks of streams and rivers can be placed water mills, and according to the strength of the water, multiple water mills can be set up. If there are more than two, they are called continuous machine mills, and it is common to set up four mills. The water wheel is also known as the Confucius car, which is an ancient agricultural irrigation tool in China. It is the prototype of the high-level labor created by the people in the process of conquering the world, and it is a precious historical heritage. It is said that it was the prototype of the water wheel, which was invented by Hua Lan in the Eastern Han Dynasty, and was improved and widely used in the Shu State by Confucius in the Three Kingdoms period. It was widely used in agricultural irrigation in the Sui and Tang dynasties, and has a history of more than 1700 years.

Knowledge Extension

In my spare time, I made a simple waterwheel by myself. I observed the differences between it and our experimental device, and what are the drawbacks? How can I improve it better?

Safety Warning:

All the accessories in this product are specially designed for student experiments. Please use them under the supervision of teachers and parents to ensure safety! Do not consume any of the products! They are not suitable for children under three years of age. Do not approach fire sources. Before assembling any batteries, please check if the circuit is clear, all parts of the circuit are complete, and all contacts are good. The + on the battery is the positive pole, and - is the negative pole. Be careful during the assembly process, and if glue is used, do not get it in your eyes or on your skin.