Children's Science and Technology Small Invention Material Primary School Student DIY Toy Kindergarten Science Small Production Experiment Pumping Well 儿童科技小发明材料小学生DIY玩具幼儿园科学小制作实验抽水压井

Product Name: Pump Pressure Well Intervention

Model Number: KX842

Size: 250*25*120 mm

Packaging: Packaging bag

Packaging: 300 PCS

Box dimensions: 60*45*55

     The basin must be provided by yourself

Principle of pumping and pressure control

The piston moves up and down, reducing the pressure.

A water press is a tool used to draw groundwater onto the surface. It is made of cast iron, with a cement-like base, a water outlet at the top, a thick section at the back and a thin section at the front, and a pressure handle at the end that connects to the core of the well, approximately twenty to thirty centimeters long. Due to frequent use, it becomes brighter in color. Inside the core of the well lies a water drawing pad; the force generated by this pad and the core of the well draws the groundwater upward. Water presses were widely used in daily life. With the development of times, they are no longer the mainstream water extraction device, but such tools still exist in some areas (mainly in rural regions). Inside the water press, there is a piston and a valve, which operate in a one-way manner. By lifting the handle upwards, the air inside the well can be removed, and by repeating this process several times, groundwater can be extracted from the well.

3. [Teaching Objectives] (1) Knowledge and Skill Objectives ① Understand the existence of atmospheric pressure ② Learn methods of estimating and measuring atmospheric pressure (2) Process and Method Objectives

① Through observation and practice, students experience the existence of atmospheric pressure. ② Students experience the process of self-directed inquiry and master scientific investigation methods. ③ By studying Torricelli’s experiment, students understand the scientific approach of using liquid pressure to study atmospheric pressure as an equivalent substitute. ⑶ Emotional attitudes and values objectives: ① Through activities such as observation, experiments, and inquiry, students develop a scientific attitude of seeking truth from facts. ② Through investigative activities, students experience the joy of success, fostering their interest in physical learning activities, enhancing their confidence in learning, and stimulating their enthusiasm for education.

4. [Key Points and Challenges in Teaching] Key points: ① Understanding the existence of atmospheric pressure ② Estimation and measurement of atmospheric pressure Challenges: ① Demonstrating the existence of atmospheric pressure using various methods ② Students independently exploring how to estimate atmospheric pressure 5. [Teaching Process] The teaching process for this lesson is divided into four stages: 1. Creating a scenario, raising questions to stimulate interest, and introducing the topic Do you students want to watch a magic show? The teacher takes out a beverage bottle: “Here is a beverage bottle; I can suck it up with my hand. Do you believe it? Many students don’t. The teacher conducts a demonstration experiment: sucking the empty bottle with hands. After watching the experiment, the students are amazed and want to try it themselves. After learning about atmospheric pressure, we will understand why this happens. This introduces the topic and writes “Atmospheric Pressure” on the blackboard. The lesson starts with a simple and easy-to-perform experiment, directly addressing the theme. It is concise and clear, and the experimental materials come from everyday life, making students feel that physics is all around us. 2. Group exploration, discussion and exchange, experiencing the existence of atmospheric pressure