36results about How to "Meet teaching requirements" patented technology

The invention discloses a multifunctional blackboard. The two ends of a sliding block are inserted into slideways in a penetrating manner, and the sliding block can move in the slideways according to a certain rail; an ash collection slot is reserved in the bottom of the inner cavity of a framework; an ash collection box is mounted at one end of the ash collection slot; a supporting device comprises supporting bases, supporting rods, telescopic rods and positioning pins; the supporting rods with hollow structures are fixedly mounted in the middles of the top ends of the supporting bases; the telescopic rods are inserted into the supporting rods in a penetrating manner; positioning pins for positioning the heights of the telescopic rods are mounted at the upper parts of the supporting rods; the top ends of the telescopic rods are fixedly connected with the bottom of the framework. According to the multifunctional blackboard, a blackboard eraser and a blackboard body are designed into an integrated structure, so that the quantity of teaching aids carried by a teacher is reduced; the multifunctional blackboard is further provided with the ash collection slot and the ash collection box structures which are used for collecting ash falling onto the blackboard surface, so that the ash is prevented from falling onto the ground. The multifunctional blackboard is provided with the supporting device capable of freely adjusting the height, so that the teaching requirement of the teacher can be met.

The invention discloses an ideological and political teaching plan display method based on current event case optimization, which belongs to the teaching management technology. The method starts by storing the internal current affairs case, the internal case file, and the log file. Then create a teaching account, add external case files, and combine external cases and internal cases that meet the requirements into a new teaching plan combination. Store teaching plan combinations that meet the requirements to form new case files and log files. The invention updates the teaching cases from the external database, and the teaching cases advancing with the times can improve the classroom teaching quality and meet the teaching requirements of ideological and political courses. The invention also discloses an ideological and political teaching plan display system based on current affairs case optimization.

The invention discloses a beat generator. The invention is composed of two waveform generators. The structure of each waveform generator is: a resistor R1 is connected in parallel with a capacitor C1, one end of which is grounded, and the other end is connected in series with a capacitor C2 and connected to an operational amplifier. Connected, capacitor C2 is connected in series with adjustable resistor RP1, adjustable resistor RP1 is connected in series with adjustable resistor RP2, and adjustable resistor RP1 is connected with operational amplifier A, adjustable resistor RP2 is connected in series with resistor R2, resistor R2 is grounded, operational amplifier and speaker Connected, there is a frequency meter directly connected between the operational amplifier and the speaker; the operational amplifier and the speaker are powered by the power supply. The invention has reasonable structure and good application effect.

The invention discloses a two-dimensional code made of plant materials and a manufacturing method thereof. The two-dimensional code includes a base plate, and a two-dimensional code area is arranged on the surface of the base plate. The two-dimensional code pattern layer, the glue layer and the plant layer; the production method includes the drying of plant raw materials, the preparation of the two-dimensional code pattern layer, the pasting of double-sided adhesive strips, the preparation of double-sided adhesive plant leaf lines, the plant two-dimensional Steps such as the preparation of yards and the production of beautification areas. The principle of the production method of the two-dimensional code disclosed by the present invention is simple, and it is easy for children to accept and understand; and the method adopts a collage method to produce the two-dimensional code, which has low requirements for hands-on ability and is easy for children to operate and understand. It meets the teaching requirements; and because of the texture of the plant on the surface, it has a concave-convex feeling, which is more convenient for children to feel and understand.

The invention discloses a standing wave experimental device and an experimental method, wherein the standing wave experimental device includes a vibration source, a horizontal slide rail, a horizontal scale, a sliding seat with a slit knife edge, a string, a string tension testing mechanism and a wave Overlay parts such as demo units. Wherein, both the vibration source and the string tension testing mechanism are located on the horizontal slide rail, and are respectively located at opposite ends of the horizontal slide rail. The invention can not only accurately measure the tension of the string, but also fine-tune the tension of the string, and can provide the real-time change curve of the tension of the string when the wave propagates on the string. The experimental method of the present invention includes the experimental method of verifying the standing wave formula, the experimental method of verifying the condition that the wave equation is established, the experimental method of the comparative experiment of studying the influence of different reflection mechanisms on the reflected wave amplitude, and the experimental method of demonstrating the superposition process of two columns of waves Methods, through the above experimental methods, to meet the teaching requirements of a variety of physical experiments.

The invention relates to the technical fields of energy saving and environmental protection, in particular to an experiment table with a direct-drive wind generating set. The experiment table comprises the wind generating set, an electrical cabinet control system and a programming system, wherein the programming system is computer programming equipment and is used for transferring programs to the electrical cabinet control system to guide and control the wind generating set to realize operation of all experiments. According to the experiment table provided by the invention, through the operation for above conventional systems and devices, the systems and the device can be arranged and combined into different system devices in a diversified manner. The experiment table has strong disassembly / assembly and authenticity; the programming system adopts a frame structure, a function module is solidified into the programming system at the bottom layer of a programming environment, and the module can be randomly called for programming when the programming is operated. The experiment table can guide the design for brand-new practical training equipment of the wind generating set, and disassembly / assembly and hoisting of a unit can be realized. Therefore, the teaching requirement is met greatly.