47results about How to "Rich teaching methods" patented technology

The invention provides a self-service type table tennis practice apparatus. The apparatus is characterized in that a baffle (1) is erected through two supporting columns (2), and two screws (3) at the back of the baffle (1) are inserted into screw holes in the two supporting columns (2) and fixed with two nuts (4). The height and the inclination angle of the baffle (1) can be adjusted by adjusting the position of the screws (3). The self-service type table tennis practice apparatus has the benefits as follows: the self-service type table tennis practice apparatus is formed by erecting the baffle with two supporting columns; a person can perform motion training and practice at any time; the training method and training means can be increased by adjusting the height and the inclination angle of the baffle and the distance between the supporting columns and a table tennis table; the self-service type table tennis practice apparatus can serve as an auxiliary instrument for table tennis teaching and examining, the teaching method and means are increased, and the practice apparatus is helpful to primary, intermediate or high-level practicers; besides, the apparatus is simple to manufacture, reasonable in manufacturing cost and convenient to store and transport and occupies little space.

The invention discloses a mining engineering teaching model and belongs to the fields of mining engineering teaching and training. The mining engineering teaching model is characterized in that an original overall mining engineering model is reasonably detached and assembled according to the engineering characteristics of mining engineering and model assembly characteristics, engineering blocks are detached into basic engineering blocks and auxiliary blocks, each basic engineering block refers to different mining engineering, and the auxiliary blocks comprise connecting blocks, supporting blocks and ventilation facility blocks. The basic engineering blocks are connected into complex engineering through the connecting blocks, a three-dimensional space model is formed through the supporting blocks, and a whole mine ventilation system is formed through the ventilation facility blocks. The mining engineering teaching model is matched with mining engineering classroom teaching and model class teaching, the spatial form of mining engineering is conveniently combined with two-dimensional engineering graphics, and the teaching effect is improved; and meanwhile, students can deepen the understanding of the mining engineering space concept by using the mining engineering teaching model after class, and the graphics interpreting ability and space imagination ability of the two-dimensional engineering graphics are improved.

The invention discloses an experimental apparatus for exploring and demonstrating the momentum theorem. The experimental apparatus comprises a base, a support, a collision weight, a supporting object and an impact force measuring circuit. The support is fixed on the base, the collision weight is hung on the support and can oscillate back and forth, and the impact force measuring circuit can be used for measuring and displaying force born by the supporting object when the collision weight and the supporting object collide. The experimental apparatus is simple in structure, low in cost, simple in operation, obvious in effect, and capable of helping students to visually understand the momentum theorem and enriching teaching content and teaching methods, and materials can be obtained easily.

The invention discloses English teaching equipment which comprises a base, a plurality of fixing mechanisms are arranged on the bottom surface of the base, sleeves are arranged on the outer walls of the two sides of the base, slidable connecting plates are arranged in the sleeves, a plurality of matched plug pin holes are formed in the connecting plates and the sleeves, and a transverse plate is arranged at the bottom end of each connecting plate. A lifting frame is arranged at the top of the base, a writing board is arranged at the top end of the lifting frame, a sliding groove is formed in the top of the writing board, a moving block is arranged in the sliding groove, a telescopic rod is arranged at the bottom of the moving block, the movable end of the telescopic rod is connected with a scribing mechanism, and a chalk dust collecting groove is formed in the bottom of the writing board. And dust collectors are arranged at the two ends of the chalk dust collecting tank. The four-line grid teaching aid can be tightly adsorbed to the ground through the fixing mechanism, the shaking amplitude is reduced, a standard four-line grid can be rapidly drawn through the line drawing mechanism, and the teaching quality is improved.

The invention discloses a novel accounting computerization teaching device, which comprises a main body, wherein a fixed shaft is arranged at the top end of the main body; sleeves sleeve the outer sides of two ends of the fixed shaft; the sleeves are fixedly connected to a whiteboard; a display screen is arranged on the side surface of the whiteboard; loudspeakers are arranged on the surfaces of both sides of the main body; a switch and a microphone are arranged on the upper surface of the main body; the switch is electrically connected to an external power supply; the microphone is connected to the loudspeakers by virtue of lead wires; and both the microphone and the display screen are electrically connected to the switch. By arranging universal wheels and foot brakes, the novel accounting computerization teaching device disclosed by the invention can be moved and fixed conveniently, so that the teaching device is more convenient to use; meanwhile, by arranging the display screen and the whiteboard, conventional teaching and modern media are combined, so that more diverse teaching modes are achieved and the learning effect of students is enhanced; and meanwhile, by arranging the microphone and the loudspeakers, a teacher, who gives a lesson, can be clearly heard by all persons in the class, so that learning efficiency is improved.

The invention belongs to teaching instruments and particularly relates to a Lorentz force demonstrating instrument. The Lorentz force demonstrating instrument comprises a support (1), an upper container (2), a lower container (3), a power source (4) and a ferromagnet (5), wherein the upper container (2), the lower container (3), the power source (4) and the ferromagnet (5) are arranged on the support (1), electric conducting liquid (6) is filled in the upper container (2) and the lower container (3), the upper container (2) is communicated with a guide pipe (7) arranged vertically, the electric conducting liquid (6) of the upper container flows out of the guide pipe (7), forms a water column and falls into the lower container (3), two ends of the power source (4) are respectively connected with a lead wire (8), the lead wire (8) at one end of the power source (4) is steeped into the electric conducting liquid (6) of the upper container (2), the lead wire (8) at the other end of the power source (4) is steeped into the electric conducting liquid (6) of the lower container (3), and the ferromagnet (5) is located between the upper container (2) and the lower container (3). The Lorentz force demonstrating instrument enables students to visually watch Lorentz force born by charged particles, and is helpful in knowledge grasp.