Parent-child interactive crafts can improve the quality of parent-child companionship, improve parent-child relationships, and our time with our children is filled with joy, interaction, and communication. It can cultivate children's ability to solve problems by themselves. When children encounter problems, they should first see and experience the solution themselves, because this is how 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 their little hands. Brushes, paints, scissors, hot-melt guns, glue..., they dare to try any tools, and to a certain extent, they develop different skills. It can improve children's self-confidence. In the process of making crafts, we try all possibilities together, experience many failures, but we always succeed, which to a certain extent enhances their self-confidence. It can cultivate children's concentration. When children explore various tools and crafts, they are very focused, and if there is no external disturbance, they can continue to explore. Our developed 16 scientific instruments let children learn more scientific knowledge. Let's explore together!

All products are equipped with courseware, PPT, teaching plans, and videos, so you can start teaching immediately after receiving the product.

The air car uses the principle of air compression. Air has mass, and we cannot feel it dispersed in the air. However, when air is compressed into an airbag, the entire air has pressure. When we release the compressed injection tube, the air in the airbag rushes out, and in the process of rushing, it drives the gears to rotate, which in turn drives the wheels to rotate, thus pushing the air car forward.

知识点：Knowledge points
1. Gravity - All objects on Earth are subject to the force of Earth's gravity, which is known as gravity.
2. The center of gravity of an object - the concentration of the gravity acting on all parts of the object at a single point, which is called the center of gravity of the object.
3. Objects with uniform quality and regular shapes have their center of gravity located mostly in the center.
4. Under the action of gravity, the center of gravity of an object always has a tendency to move downward, causing its center of gravity to continuously decrease.

Knowledge point: When a coil is electrically charged, it generates a magnetic field, with like poles repelling each other. When a battery with a magnet attached enters a copper coil, the magnetic field created by the coil interacts with the electromagnetic body, attracting and repelling each other, causing the battery to move. The current of the positive and negative poles moves along the copper wire, pulling and repelling each other with the magnet on the battery, creating that invisible force, pushing the battery forward smoothly.

The electric toy car uses the principle of friction. There are two motors placed at the back of the electric toy car, and the rotation of the motors is restricted by the friction of the floor. The friction is less than the torque of the motors, which provides a push to the electric toy car, allowing it to move forward with the help of the front wheels.

Wind turbines are rotated by the wind, which converts the kinetic energy of the wind into mechanical energy. The generator spins as the wind blows through the blades, generating electricity. A generator is a device that converts other forms of energy into electrical energy. The rotation of the wind turbine generates electricity.

Electric boats operate using the principle that solar panels can convert solar energy into electrical energy. Solar panels absorb solar energy and transmit it to the motor through wires. The rotation of the motor drives the movement of the blades, and the push of the reaction forces makes the car move.

Sanitation Elves” Scrubber Cars utilize the principle of an eccentric wheel, which refers to a wheel where the axis is not located at the center of the wheel's circle. When the wheel moves, it does not stay on the same plane, which causes the object to vibrate. This is essentially the same principle as the eccentric vibration generated by mobile phones.

The Dream Star is made up of circuits within circuits, achieving the dream-like effect by connecting various light bulbs in parallel within the device to light up. The stars refer to celestial bodies visible in the universe. The energy activity within the stars makes them irregular in shape.

With the assistance of a series circuit, the electric toy turtle allows the energy produced by the battery to flow through. The battery provides power to the motor, which in turn propels the electric toy turtle to move. The friction experiment.

Solar-powered cars use natural resources—sunlight—to generate electricity. The working principle of a solar-powered car is that it has a solar panel that, when exposed to sunlight, converts light into voltage. Additionally, an external battery can be connected through wires to deliver power to the motor in a timely manner. The motor, in turn, uses the power to drive the car through gears.

The Heart Demonstrator utilizes the principle of a series circuit, powered by a battery to illuminate the heart. It simulates the effect of blood circulation through a syringe, tubing, and red-colored water. The heart's primary function is to provide power for blood flow, transporting blood to all parts of the body.

The use of the eccentric wheel principle, so-called eccentric wheel refers to the axis of the wheel not being on the center of the wheel's circle, at this time, the wheel will not move on the same plane, thereby causing the object to vibrate. This is essentially the same as the principle of the eccentric vibration generated by mobile phones.

The feature of Faraday capacitor cars lies in the use of Faraday capacitors as energy storage devices. Faraday capacitors, also known as super capacitors, are a new type of energy storage elements that combine the characteristics of physical capacitors and batteries. They can provide higher energy density than physical capacitors and have higher power density and longer cycle life than batteries.

When an electric current flows through an electric coil, a changing magnetic field is generated in the coil. Due to the electromagnetic induction phenomenon, an induced current (eddy current) is created within the metal object. This eddy current produces its own magnetic field, which in turn affects the original magnetic field, causing the detector to emit a sound. Through this experiment, we can understand the application of metal detectors in daily life.

Hydraulic lift is an example of the Pascal principle. The Pascal buckling experiment proved the existence of liquid pressure. According to the Pascal's law, when a certain pressure is applied to a piston in a hydraulic system, the same pressure increase will be generated on another piston. The hydraulic lift achieves its effect by pushing and pulling the syringe, which contains water, thereby transferring the pressure to the long shaft. The rotation of the long shaft makes the triangular wood block rise and fall, thus achieving the effect of the hydraulic lift.

The walking robot uses the principle of a dual-head reducer motor. The battery provides electricity, which is transmitted to the motor through wires. The motor converts electrical energy into mechanical energy. The reducer motor causes the shafts on both sides to continuously rotate, driving the rotation of the semi-circular plastic plate. Because the semi-circular plastic plate has friction with the ground, it allows the robot to move forward, achieving the effect of a walking robot.