Qinghua Science and Education Instrument Co., LTD
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Today, when science education in primary schools is increasingly valued, a set of appropriate experimental tools can not only help teachers better carry out the curriculum content, but also ignite the flame of knowledge in children's hearts. And "qinghua 81204 handheld sieve 3 specifications coarse subdivided sample sieve primary school science and education instruments experimental equipment" is such a right-hand man-it not only has rigorous professional performance, but also fully considers the convenience and safety of teachers and students in daily use.
The first step in science | How to select a suitable sample sieve for classroom use?
For elementary school students who are just beginning to contact natural sciences, an excellent teaching aid should be able to accurately convey the main points of knowledge and ensure the safety of the use process.
Tsinghua's 81204 hand-held screen is developed based on this concept: food-grade ABS plastic shell is used to wrap the stainless steel filter screen assembly to prevent accidental scratch risks caused by sharp edges and corners; Each set of devices can only be delivered for circulation after strict pressure test to verify that the strength limit reaches the standard.
compared with other similar products on the market, the " guide for purchasing scientific and educational instruments " generally suggests that priority should be given to such brand equipment manufactured by the background support of regular universities, and at the same time, attention should be paid to whether it is equipped with detailed operation manuals and supporting lesson plan resource download services and other functional highlights. The frequent appearance of the " Primary School Experimental Tool recommend " list also proves that its practical value is widely recognized.
three-gauge integration | teaching good helper for fine particle grading
the biggest feature of this series of products lies in the integration of three standard sieve plate modular combination systems with different pore sizes:
it is small size suitable for distinguishing the slight differences of powder substances such as flour and salt; The medium size can be used to separate the particle size distribution of gravel mixture. As for the large opening, it is specially designed for rapid classification of larger volume samples such as beans and chaff.
teachers can demonstrate the whole process of continuous filtering process by changing the assembly sequence, making abstract concepts concrete and observable. " particle analysis experimental equipment " is no longer limited to the static display category but transformed into a dynamic participatory learning medium, which greatly improves the interest and interaction efficiency of the classroom. " sample screening accuracy analysis " related content has therefore become an indispensable part of many schools to organize extracurricular activities.
Durable | Quality casts the foundation for every stable operation
no matter it is repeated vibration and friction or long-term soaking and cleaning, it will not easily lead to deformation and damage-this is the strong vitality that high quality raw materials endow this work.
the internal support frame is all made of aviation aluminum alloy casting process to build the core frame, and the external support frame is covered with a soft TPE buffer layer to reduce the energy conduction effect of landing impact. All screws at connecting parts have been passivated and anticorrosive treatment to extend the overall service period for more than five years.
the test results of laboratory simulation of extreme conditions show that the initial working efficiency can still be maintained without deformation or loosening under high-intensity frequency of eight hours a day. " Wear Resistant Labware " is well-deserved, even in the face of mischievous students are calm and fearless. Behind the promise of " long-term use without fear of loss " is the almost stringent requirements for the production process.
Humanized engineering | The secret of comfortable grip is all revealed here
muscle soreness caused by long-term one-handed manipulation has always been a major obstacle to the correct completion of tasks for younger children.
in view of this difficult problem, engineers specially introduced bionic grip curve model to optimize the contour shape of the handle, and pressed dense anti-skid convex lines on the surface to prevent sweat from spinning out of control. The thumb rest groove reserved at the top helps to apply appropriate pressing force to control the flow regulation amplitude.
the actual evaluation data show that compared with the traditional straight tube shape, the average physical consumption is about 40%, and the error rate is reduced by 6%. The design concept of " student-friendly experimental equipment " has been perfectly implemented, and even younger grade one and two children can successfully complete the specified action instructions independently. " anti-slip anti-fatigue handheld design " advantage can be seen.
Education through fun | A model of a sharp weapon to stimulate children's interest in exploration
Instead of boring theoretical formulas, it is better to guide them to try to discover the mystery of the law.
There was a teacher who reflected that since the introduction of this equipment, the number of active hand-raising speakers in the class has increased significantly, and some parents were even surprised to say that their children began to collect all kinds of seeds spontaneously after returning home, trying to further refine the research according to the color, shape and texture... These positive changes are undoubtedly due to the chain reaction brought by the construction of a good practice platform.
" children's basic scientific research enlightenment device " role positioning increasingly highlights the important position, with the help of scientific and technological means to create immersive experience environment to promote passive acceptance into active exploration and search desire, under the strong drive of often can harvest unexpected growth and progress results. The reputation of " Interactive Teaching Practical Artifact " is well-deserved and convincing.
