Product Name: KX2127 Hand Crank Bubble Machine
Product code: KX2127 hand-crank bubble machine
Dimensions: Approx. Length 110mm * Width 150mm * Height 150mm
Weight: About 63g
Material: Plastic
Color: Mixed
Is the device powered by batteries: Yes
Packing: 500pcs
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.

The purpose of the experiment: To enable children to learn more about scientific knowledge and their own ability to practice by means of game entertainment.

Principle Application: The hand-cranked bubble machine uses a high-speed motor to drive a propeller, generating forward-blowing wind. When the hand-crank Z-shaped shaft is turned, it drives the bubble ring to rotate. The rotating bubble ring is used to dip the bubble liquid. When the liquid and gas contact, there is a thin layer on the surface, called the surface layer. The molecules in the surface layer are sparser than those in the liquid interior, and the distance between the molecules is larger. The interaction between the molecules shows gravity, which is called surface tension. This force will blow out colorful small bubbles!

Experimental Cognition: The formation of foam requires two essential factors, one is the foam solution, and the other is air, neither of which can be lacking. Without the foam solution, the liquid film surrounding the gas will not form, and there will be no bubbles. Without gas, only with the foam solution, the bubbles cannot form.

Knowledge Expansion: Surface tension refers to the force exerted by the liquid surface at any two adjacent points along the unit length boundary perpendicular to each other.

Knowledge Extension: In the formation system of bubbles, the foam-forming agent solution is the dispersing medium, and the gas is the dispersed phase. Only when the gas is dispersed in the liquid can bubbles be formed, and then countless bubbles form foam. In addition to the important factor of the performance of the foam-forming agent, the introduction of gas into the foam-forming agent solution is another important factor.

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.