Positioning differences of interconnected blackboard, ordinary blackboard, push-pull green board and interactive whiteboard

Don't start with product names, start with classroom tasks and budgets

In the smart classroom project, the purchaser is often confused by a bunch of product names: ordinary blackboard, push-pull green board, interactive whiteboard, interconnected blackboard and nano blackboard. Suppliers say that they are good, and dealers may not be able to clarify the boundary. The result is that the bidding documents are not clearly written, the bid evaluation cannot be compared, and only after the arrival of the goods can it be found that the equipment does not match the teaching task, or the budget is over-spent, but the function is not used.

Really effective selection, not from the product name, but from the classroom tasks and budget to start. Is this classroom mainly chalk blackboard writing, or courseware, screen projection and digital annotation? Do you need to keep traditional writing? Do you need to record and broadcast, remote classroom or platform docking? Can the wall load, power network and installation space be satisfied? Confirm these clearly, and then decide whether to use ordinary blackboard, push-pull green board, interactive whiteboard or interconnected blackboard, so that it is not easy to make mistakes.

1. first define the role boundaries of the five types of equipment

Each of the five types of equipment has its own division of labor, which cannot be sorted by "high and low end", but should be positioned according to teaching tasks, display capabilities and interconnection capabilities.

It should be noted that the nano blackboard is not completely equivalent to the interconnected blackboard. Nano blackboards usually emphasize an integrated surface, with a display area in the middle and writing areas on both sides. The interconnected blackboard emphasizes the connection between blackboard writing and digital content, including blackboard writing preservation, screen projection, recording and broadcasting, and platform docking. When purchasing, we should judge according to the actual teaching needs, and we should not default to complete functions just because there is "interconnection" in the name.

Comparison of 2. hard parameters: write requirements to acceptable

The key to parameter writing is that they must be measurable, verifiable, and acceptable upon completion. Only writing "high quality" and "interactive fluency" cannot be compared in the bid evaluation stage and cannot be judged in the acceptance stage. The following are the main hard parameters of the blackboard writing area and display area, which can be adjusted by the purchaser according to the actual project.

Hard parameters of blackboard writing area

Display area hard parameters

Interconnection function hard parameter

3. cost vs. budget: B2B purchases must be calculated as total cost of ownership.

Equipment unit price is just the tip of the iceberg. Installation construction, power networks, software licensing, maintenance spare parts, training costs, and later upgrades all affect the total cost of ownership of the project. If you only look at the equipment quotes, it’s easy for additional charges down the line to blow your budget.

For classrooms with limited budget and mainly writing on the blackboard, it is still reasonable to use ordinary blackboard or ordinary blackboard plus simple projection. If there is an interactive tablet and the board book area needs to be expanded, the push-pull green board plus interactive tablet is a combination with high cost performance. Digital teaching, interactive frequent, interactive whiteboard is more appropriate. If blackboard writing is combined with digital teaching and there is a need for recording and broadcasting, the interconnected blackboard is worth investing in. If you build a new smart classroom and pursue an integrated appearance, you can consider nano blackboard or interconnected blackboard. Software license, annual fee and platform docking fee must be clearly confirmed at the budget stage.

4. installation and engineering conditions: determine whether the project can be landed.

Installation conditions are often underestimated. The wall does not bear enough weight, the power socket is not located correctly, the network bandwidth is insufficient, the ventilation and heat dissipation space is blocked, any problem will lead to rework or addition, and the cost of project addition is sometimes higher than the equipment price difference.

The site conditions to be confirmed before installation include: wall type, thickness, material and load-bearing capacity; Location, quantity and power of power socket; Network access mode, network port location and bandwidth; Whether the cable path is hidden, safe and easy to maintain; Whether there is ventilation gap and maintenance space between the green board and the flat plate; Whether the platform, door and passage affect sliding and viewing; Classroom visibility, viewing distance and rear row; whether reinforcement, new lines or modification are needed. These contents are best to form a site survey record before the contract is signed as the basis for the installation plan.

5. selection path by classroom type

Different classroom types have different selection logic. The following path can be used as a reference for purchasing and distributor allocation.

The selection path can be summarized into six steps: first confirm whether the teaching task is blackboard-based, digital-based, or a combination of the two; Then confirm the existing equipment, whether there are interactive tablets, recording and broadcasting systems, video booths; Confirm the budget scope, including the total cost of equipment, installation, software and maintenance; Confirm classroom conditions, including wall, power supply, network, space and viewing distance; Confirm expansion requirements, whether recording and broadcasting, remote and platform docking are required; Finally, determine the equipment combination.

6. acceptance criteria: covering blackboard writing, display, interconnection and teaching process

Acceptance testing should not be limited to verifying whether the equipment can be powered on. The blackboard writing area, display area, interconnection function, installation quality and teaching process should have clear acceptance contents and testing methods.

Take the push-pull green plate as an example, check whether the length of the whole plate is above 4000mm, whether the gloss of the plate surface is not higher than 12 gloss units, whether the formaldehyde emission is not higher than 0.2mg/L, whether the horizontal frame is not less than 57mm × 78mm, whether the vertical frame is not less than 29mm × 100mm, whether the pulley life is not less than 100000 times, whether the lock is locked and the key is universal. These indicators should be written into the contract annex and checked item by item during acceptance.

7. Supplier Inquiry and Contract Attachment

The final conclusion of the selection shall be translated into a verification procurement requirement. It is suggested to provide the following information when inquiring: classroom type, size, viewing distance and lighting conditions; Teachers' blackboard writing and digital teaching requirements; Existing equipment, software, platform and recording and broadcasting system; Whether recording and broadcasting, remote classroom or video booth are required; Number of classrooms, installation conditions and delivery time; Budget scope, quality assurance requirements and after-sales requirements; Whether software authorization, platform docking and customized development are required.

The contract annex suggestions include: equipment configuration list and technical parameter table, technical parameter response and deviation table, blackboard writing area and display area and interconnection function confirmation table, installation condition and site investigation confirmation table, cost and budget schedule, acceptance standard and test record table, quality assurance spare parts training and after-sales service scope, software authorization and platform docking instructions. Having these documents prepared ensures that the bid evaluation has a solid basis, acceptance criteria are clearly defined, and disputes in the later stages will be significantly reduced.

Frequently Asked Questions

What is the difference between the interconnected blackboard and the ordinary blackboard? On the basis of keeping the chalk writing, the interconnected blackboard increases the display area and interconnection function, and supports courseware, screen casting, annotation and saving. Some models also support recording and broadcasting and remote classroom. Ordinary blackboard only solves the problem of traditional blackboard writing. When purchasing, it is necessary to judge whether the interconnection function is needed according to the teaching task.

What is the difference between an interconnected blackboard and a push-pull green board? The core of a push-pull green board is an expandable board book and screen occlusion, which is usually used in combination with an interactive tablet; an interconnected blackboard places more emphasis on the ability to connect the board book with digital content, and is usually an integrated design. The two can be combined or selected separately according to the needs of the classroom.

What is the difference between the interconnected blackboard and the nano blackboard? The nano blackboard usually emphasizes the integrated surface, the middle display and the writing on both sides; the interconnected blackboard emphasizes the interconnection capabilities such as blackboard writing preservation, screen projection, recording and broadcasting, and platform docking. Bidding should be based on functional requirements, not just the name.

Does the interconnected blackboard support chalk writing? Most interconnected blackboards reserve a chalk or dust-free pen writing area, but the specific type of pen supported and the size of the writing area depends on the model. The supplier shall be required to demonstrate on site prior to procurement.

Does the interactive smartboard support saving handwritten notes? Some models support taking photos for upload or real-time digital saving; the storage location may be local or in the cloud. Whether a fee applies and the duration of storage must be clearly specified in the technical agreement.

How to choose the interconnected blackboard, push-pull green board and interactive whiteboard? Choose ordinary blackboard mainly for blackboard writing and limited budget; choose push-pull green board for existing interactive tablet and need to be expanded; choose interactive whiteboard mainly for digital teaching; choose interconnected blackboard for combination of blackboard writing and digital, and choose interconnected blackboard for recording and broadcasting.

Should the recording and broadcasting classroom choose the interconnection blackboard or the push-pull green board + recording and broadcasting system? If the recording and broadcasting system has been independently configured, the push-pull green board + interactive tablet can also meet the demand; if the blackboard and screen content need to be recorded synchronously, the integration scheme of the interconnection blackboard is more convenient. It depends on the requirements of recording and broadcasting interface and platform docking.

How are the software licensing fees for interactive smartboards calculated? There is significant variation among vendors: some offer a one-time buyout, others charge an annual fee, and still others base their pricing on the number of classrooms. When making an inquiry, be sure to clarify all details and include them in the total cost assessment.

How does the interconnection blackboard interface with the existing platform of the school? Platform compatibility, API interface, data format and whether customized development is required need to be confirmed. It is recommended that the supplier be required to provide similar docking cases.

How to write the bidding parameters of the interconnected blackboard? Write the size, material, glossiness, formaldehyde emission, display resolution, touch points, screen projection agreement, blackboard writing storage, recording and broadcasting interface, software authorization and so on into measurable and acceptable terms, and set asterisk items and scoring items.

How to test the interconnection function during the acceptance of interconnection blackboard? On-site test blackboard saving, screen casting, recording and broadcasting, remote classroom, teacher account login and equipment management, confirm that the function is normal, the delay is acceptable, and the data can be saved or exported.

In which scenarios are ordinary blackboards still a reasonable choice? Ordinary blackboards are still suitable for classrooms with limited budget, mainly blackboard writing, simple maintenance and no need for digital teaching. There is no need to over-configure in order to pursue "wisdom.

Conclusion

Interconnected blackboard, push-pull green board, interactive whiteboard and ordinary blackboard are not simple upgrade relationships, but serve different blackboard writing, display, interconnection and budget requirements respectively. The Education Bureau, schools and distributors should evaluate the overall plan according to "blackboard writing area + display area + interconnection function + engineering conditions + total cost", and then select the appropriate plan according to the classroom type and teaching task. The parameters, cost, installation and acceptance are advanced to the procurement stage, which is much lower than the cost of reworking or adding items after the arrival of the equipment.