Physics teachers use divergent thinking to broaden the problem-solving ideas He Yuanlong (Taoxi County Tailai Middle School, Minxi 551502, Guizhou) Divergent thinking is the way of thinking that can be launched in different directions as much as possible. Divergent thinking is also a creative thinking. In the process of learning physics knowledge and answering physical problems, as long as we insist on frequent divergent thinking, we can broaden our thinking and develop creative thinking skills. The divergent thinking in solving problems can be carried out in two aspects. On the one hand, when researching a specific problem, we can try to find answers from different directions and different angles, and try to find a variety of solutions. On the other hand, the problem of solving the problem is changed from different directions and from different angles, so that we can solve a problem and know more solutions. The water shower should heat the water in the water tank for a long time, and then shower the hot water in the water tank after the water temperature reaches the requirement. The waterless tank shower allows cold water to flow through the electric heater to reach the required temperature and immediately flows out of the nozzle for shower. It is known that the cold water temperature is 16*C, the hot water temperature required for shower is 38, the hot water flow required for shower is 4X 103m3/min, the specific heat of water is 4103P (kg*C), and the maximum current allowed by the household circuit is 5A. Please use the above data to calculate and explain that it is not appropriate to use a waterless box type electric shower in the home. Analytical solution: This question is a comprehensive question of thermoelectricity. From the title, the hot water volume required per second and the mass of hot water required per second can be known, so as to know the heat required to heat the water every second. From the perspective of the requirements of the topic, in order to explain that it is not appropriate to use a waterless box-type electric shower in the home, it can be used as a starting point for thinking from different directions. Method 1 is to consider whether the actual current exceeds the maximum allowable current of 5A from the current. Method 2 is to consider whether the actual voltage exceeds the rated voltage of 220V from the voltage consideration. Method 3 is to consider whether the actual required power exceeds the rated power from the viewpoint of electric power. power. The quality of the water to be heated per second is to explain that it is not suitable to use a waterless electric shower in the home. If you think from the current point of view, the electric energy consumed by the electric heater per second is the electric current: the required current yypA: Therefore, households should not use waterless electric showers. If the voltage is the starting point of thinking, then P=UI=Q. The required voltage U=so the family should not use the waterless box type electric shower. If the electric power is considered, the water heater needs to heat the water from 16C to 38C every second. The heat is: the maximum power that the circuit allows to consume: so the family should not use the waterless electric shower. It can be seen from this example that using divergent thinking to seek multiple solutions can broaden the problem-solving ideas and enrich the problem-solving methods. (: 2001 * The correct solution is: first determine the nature of the movement, and then according to the corresponding type of movement, combined with known conditions to solve. Suppose the quality of the whole train is M. The length of the climb to the hillside is x. Then the mass of the part that climbed the hillside is m=Mx//. The origin of the coordinate is selected at the foot of the mountain, and the direction along the slope is the positive direction of the x-axis. Therefore, the force received by the train in the x direction is F. It can be seen that the train is proportional to the displacement from the equilibrium position in the x direction, and the direction always points to the restoring force of the equilibrium position. Therefore, the train starts to climb. To the standstill, the simple harmonic motion is set, and the period is T = 2. The time when the train stops is t. The above examples show that the periodic formula of the simple harmonic motion has a wide range of uses, especially in the example as given in this paper. In order to guide students to analyze the physical process of the problem and correctly judge the nature of the movement, then those problems that seem difficult are not difficult to solve. (:2002
Height adjustable desk helps create a healthier work environment by allowing you to move throughout your day. Switching between sitting and standing throughout a long workday provides several health benefits for the body, such as increased blood flow and enhanced posture. Standing throughout the day also keeps the mind alert and productive while you work.
Fast lifting, lifting speed up to 35mm / s, from the initial height to the upper limit, only 20 seconds. Uniform and stable, cup water balance, double motor balanced drive, lifting the whole table without shaking. The rising and falling sound is less than 45 dB, which is lower than that of keyboard typing.
Height Adjustable Desk,Stand Up Desk Adjustable Height ,Standing Desk Height Adjustable,Adjustable Height Desk Suzhou Uplift Intelligent Technology Co., Ltd , https://www.upliftec.com
Using divergent thinking to broaden the problem-solving ideas