1. System conditions and program requirements: Our school is a rural school with a total of 15 classes. Now we want to build a TV teaching system. Due to limited funds, we want to design a system that is economical and practical, and can actually implement multimedia classes in every classroom. What we want to achieve The functions are as follows: The school has 2 VCDs, 1 VCR, and 1 multimedia computer, and each class can use these devices for teaching. The principal made a TV speech to the whole school in the control room. At the same time, the school's broadcasting system was built. Please design a plan, list equipment and quote. 2. System design analysis: 1. The interactive multimedia TV teaching system is a multimedia teaching system based on closed-circuit television. According to the existing conditions of the school, we must first design a closed-circuit television system that can broadcast 4 sets of programs. The program source uses the school's existing 2 VCDs , A video recorder, a multimedia computer, the system can broadcast some school-run TV programs, such as playing videotapes and CD-ROMs of some teacher lectures, playing some teaching materials, and live broadcast some large-scale school activities. Some basic equipment of CCTV systems are modulators, mixers and televisions. 2. The school requires the system to have multimedia teaching functions, that is, the closed-circuit television system is required to have front-end and back-end interactive functions, that is, teachers can use the existing equipment of the school to carry out multimedia-assisted teaching in the classroom, so that the teaching becomes more vivid and easy Students understand and remember, here we design and use Jinmai Video NES2000A interactive multimedia TV teaching system, which can make full use of the existing resources of the school and invest in science and economy to make the school's teaching method and teaching level have a qualitative leap . 3. The broadcast system is the basic equipment of the school. Jinmai Video NES2000A dual control system fully takes into account the needs of the school. In the system design, the broadcast system is intelligent and the directional broadcast can be achieved, that is, the school can target a certain class according to the demand, or A few flights are broadcast. 4. The principal's TV speech to the whole school in the control room is to realize the live broadcast function. When the school opens a parent meeting, or holds all meetings and activities, the principal or other school leaders can realize the speech or the meeting in the control room or conference room. The live video of the meeting is transmitted to each classroom in real time without the need to bring all the people together and perform similar activities. To achieve the live broadcast function, we install a camera (used to collect live video signals) in the control room or conference room. The sound signal is collected through the microphone, and then the collected audio and video signals are relayed to each classroom through the closed-circuit television system. 5. The voltage of the power supply in many rural areas often fluctuates greatly, which affects the normal operation of the system. To ensure the normal operation of the teaching system, we add a regulated power supply to the power supply part of the system. Third, the system Sweep, welcome attention Official WeChat of Educational Equipment Procurement Network Master the latest and most authoritative information in the education equipment industry Copyright and Disclaimer: â‘ The copyright of all works on this website that indicate "Source: China Education Equipment Purchasing Network" belongs to China Education Equipment Purchasing Network, and may not be reproduced, edited or used in other ways without authorization from this website. Works that have been authorized by this website should be used within the scope of authorization, and indicate "Source: China Education Equipment Purchase Network". Violators of this website will be held accountable for legal liabilities. â‘¡ All works on this website that indicate "Source: XXX (non-this website)" are reproduced from other media. The purpose of this reprint is to transmit more information. This does not mean that this website agrees with its views and is responsible for its authenticity. Take direct responsibility and joint liability for infringement of such works. If other media, websites or individuals download and use it from this website, they must keep the "source of the manuscript" indicated on this website, and bear the legal responsibility of copyright and other. â‘¢ If the content of the work, copyright and other issues are involved, please contact this website within two weeks from the date of publication of the work, otherwise it is deemed to waive the relevant rights. Christmas Ornament Glass Crafts 1. Stained Glass Ornaments: Use glass paint or stained glass markers to create colorful designs on clear glass ornaments. You can draw holiday motifs like snowflakes, Christmas trees, or Santa Claus. Let the paint dry completely before hanging them on your Christmas tree.
Remember to handle glass with care and use protective gloves or goggles when necessary. Have fun and get creative with your Christmas ornament glass crafts!
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2. Glittered Glass Ornaments: Apply a thin layer of glue to the outside of clear glass ornaments and sprinkle glitter over them. You can use one color of glitter or mix different colors for a more festive look. Shake off any excess glitter and let the ornaments dry before hanging them up.
3. Decoupage Glass Ornaments: Cut out small pieces of holiday-themed wrapping paper, tissue paper, or napkins. Apply a thin layer of decoupage glue to the outside of clear glass ornaments and carefully press the paper onto the glue. Smooth out any wrinkles or air bubbles and let the glue dry completely.
4. Etched Glass Ornaments: Use etching cream to create elegant designs on glass ornaments. Apply a layer of etching cream to the outside of the ornament using a brush or sponge. Let it sit for the recommended time on the packaging, then rinse off the cream and dry the ornament.
5. Mosaic Glass Ornaments: Break colored glass or glass tiles into small pieces and glue them onto clear glass ornaments using clear adhesive. Create a mosaic pattern or design of your choice. Let the glue dry completely before hanging the ornaments.
