Hand-Cranked Water Wheel Car Children's Water Theme Experiment Primary School Students Manual DIY Scientific Homework Technology Small Production Materials 手摇水轮车儿童水主题实验小学生手工diy科学作业科技小制作材料

Product Name: KX2022 Hand-Cranked Waterwheel Vehicle
Model Number: KX2022
Size: 105*125*110 mm
Weight: Approximately 30g
Material: wood + plastic tube + binding wire + EVA + iron shaft
Color: Mixed Color
Does it use a battery: No
Packaging: 400 pcs
Box dimensions: 600*450*550mm

Preface:

In today’s era where more and more emphasis is placed on children’s education, scientific enlightenment education has gradually become an important topic in the field of education. More and more teachers and parents are focusing on developing children’s scientific literacy from an early age, enabling them to establish good character and behavioral habits from the beginning. Parent-child interactive crafts can improve the quality of parent-child time together, enhance parent-child relationships. The moments we spend with our children are free from phones, iPads, or televisions—only joy, interaction, and communication. It helps children develop the ability to solve problems on their own. When faced with challenges, children must first see, experience, and resolve them themselves, just as parents and teachers do during craft activities. It also stimulates children’s imagination—in their world, cars can fly in the sky, and the sun can be green... Playing with DIY crafts allows children to develop hands-on skills by using various tools, giving their hands ample opportunity to move. Pencils, paints, scissors, hot melt glue, tape—they all challenge children to try, and to some extent, help develop different skills. It boosts children’s confidence. During craft activities, we explore countless possibilities and experience many failures, but we always succeed, which in turn enhances their confidence. It helps cultivate children’s focus. As they explore various tools and crafts, they remain very focused; without external distractions, they can continue exploring indefinitely.

Experimental Objectives:
1. Guide students in learning the method for conducting the wheeled vehicle experiment
2. Develop students' ability to conduct experiments, use their hands and minds, and think critically.

Principle Application:

Key focus of the experiment: The water wheel is a water-lifting device used for agricultural irrigation. According to historical records, it was invented by the scientist Bi Lan during the Eastern Han period, over 1800 years ago. It was an ancient agricultural irrigation tool in China and a valuable historical cultural heritage. Nowadays, water wheels are rarely seen. What was the purpose of the water wheel invented by the ancients? You will understand once you complete this experiment section.
Experimental Cognition:

The concept of the water wheel: Water flow has power, and this power is called hydraulics. The water wheel is an ancient mechanical device powered by water flow. So, what influences the speed at which the water wheel rotates? First, it depends on the difference in water flow; the greater the difference, the faster the small water wheel turns. Second, it depends on the water volume; the higher the water volume, the faster the small water wheel turns.

Knowledge Expansion:

The development history and function of ancient water wheel vehicles: they transport water from low places to high places. When placed in water, the water wheel rotates due to the impact of the wheel. There are wooden barrels around the wheel; after water accumulates in the barrels, they move upward with the rotating wheel, allowing water to flow automatically into water channels and then into farmland. Secondly, the water wheel is used to generate motion through water flow velocity, enabling mechanical operations. For example, the water mill is a machine that uses hydraulic power to remove the husk from grains. In the Western Han Dynasty, early forms of water wheel vehicles appeared, known as "water cones," which were machines that used water power to grind grains. The emergence of water cones at the end of the Western Han Dynasty also involved using water power for grain grinding. The power mechanism of a water cone consists of a large vertical water wheel equipped with several blade plates, along with paddle boards arranged staggered on the axle. These paddle boards are used to move the grinding rods. Each mill is supported by a pole, with a round stone shaped like a millstone attached to one end. The mill below contains the grains ready for processing. The flowing water causes the water wheel to rotate, while the paddle boards on the axle move the ends of the grinding rods, causing the mill head to lift and drop to grind the grains. Using the water mill, grain can be processed day and night. Water mills can be placed along the banks of streams and rivers, and multiple mills can be set up depending on the water flow. Two or more mills are called "linked mills," while four mills are commonly used. The water wheel, also known as "Kongming vehicle," is an ancient agricultural irrigation tool in China. It represents a sophisticated early form of labor created by our ancestors in their efforts to conquer the world and is a valuable historical heritage. According to legend, it was invented by Hua Lan during the reign of Emperor Ling of Han. After being improved by Kongming during the Three Kingdoms period, it was promoted and used in the Shu Kingdom. During the Sui and Tang dynasties, it was widely used in agricultural irrigation. It has a history of over 1700 years.

Knowledge Extension

In your free time, make a simple waterwheel car by yourself. Observe what differences it has from our experimental device, and what its shortcomings are? How can you improve it better?

Safety Warning:

All components within this product are specialized equipment for student experiments. Please use it under the supervision and guidance of teachers and parents to ensure safety! All products are prohibited from being eaten. They are not suitable for children under three years of age. Do not bring them close to sources of fire. If using batteries, check that the circuit is unobstructed and all components on the circuit are intact, and that all contacts are properly made. On the battery, + indicates the positive electrode and - indicates the negative electrode. During assembly, be careful not to get glue on your eyes or skin.