Interactive teaching system

Abstract

The invention discloses an interactive teaching system, and relates to the technical field of teaching equipment. The device comprises a base frame, four sliding grooves are formed in the base frame in an annular array mode, and inclined refraction plates are installed in the sliding grooves in a sliding mode; the projection top frame is arranged right above the base frame, four supporting columns are connected between the projection top frame and the base frame, four multimedia panels which are arranged opposite to the inclined refraction plates in pairs are detachably installed in the projection top frame, and a picture illumination projection mechanism arranged right above the multimedia panels is installed in the projection top frame. A frustum-shaped transparent area can be formed through the four inclined refraction plates, images on the multimedia panel can be combined to display 3D images, the three-dimensional structure images of the robot can be better displayed, students can conveniently watch and deepen the structure thinking and memory, and the teaching efficiency is improved. And the picture illumination projection mechanism can display the works of the students, so that the understanding thought of the students on the robot structure is deepened.

Description

Technical Field

[0001] This application relates to the field of teaching equipment technology, specifically to interactive teaching systems. Background Technology

[0002] Interactive teaching is a teaching method that emphasizes student participation and interaction. It includes interaction among students, interaction between students and teachers, and interaction between students and the teaching content.

[0003] When teaching robot demonstrations, interactive teaching methods can deepen students' understanding. While most teachers use multimedia screens to display the robot's structure and appearance, this only allows students to observe a two-dimensional diagram. For students with limited imagination, a two-dimensional diagram is insufficient to provide a clear structural framework and does not allow for interactive demonstrations, thus failing to enhance their memory. Therefore, this invention proposes an interactive teaching system that can display the robot's three-dimensional structure and facilitate student demonstrations. Summary of the Invention

[0004] The purpose of this application is to provide an interactive teaching system in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application specifically adopts the following technical solution: Interactive teaching systems include: The base frame has four sliding grooves arranged in a circular array on the base frame, and an inclined refractive plate is slidably installed in each of the sliding grooves. The projection top frame is located directly above the base frame and is connected by four support columns. Four multimedia tablets are detachably installed inside the projection top frame and are arranged opposite to the inclined refraction plate in pairs. An image illumination projection mechanism is installed inside the projection top frame and is located directly above the multimedia tablets. The water mist diffusion mechanism includes an atomizing head that is detachably mounted on a base frame and located between four inclined refractive plates. A water supply component connected to the atomizing head is provided inside the base frame, and a water circulation component is provided between the projection top frame and the base frame.

[0006] Furthermore, the base frame is rectangular and sliding grooves are respectively constructed on its four sides. The inclined refractive plate includes a slider that is slidably installed in the sliding groove. An acrylic transparent plate is inclinedly constructed on the slider, and an anti-fog film is attached to the inclined bottom surface of the acrylic transparent plate.

[0007] Furthermore, the top frame of the projection is provided with insertion slots on all four sides, and a light-transmitting opening is provided at the bottom of the insertion slot. The inner end of the insertion slot is connected to an abutment plate by an abutment spring, and limiting components for snapping onto the multimedia tablet are installed on both sides of the opening end of the insertion slot.

[0008] Furthermore, the limiting member includes strip-shaped grooves constructed on both sides of the opening end of the insertion groove, a T-shaped limiting block is slidably inserted in the strip-shaped groove, a supporting spring is connected between one end of the T-shaped limiting block and the inner end of the strip-shaped groove, and the other end of the T-shaped limiting block is constructed with an angle.

[0009] Furthermore, the image illumination projection mechanism includes a mounting groove constructed on the side of the projection top frame and communicating vertically with the insertion slot. A flat frame for holding the light-transmitting sheet is inserted and installed at the open end of the mounting groove, and a projection lamp located directly above the mounting groove is installed inside the projection top frame.

[0010] Furthermore, the flat frame includes a U-shaped bottom frame that is slidably inserted into the mounting groove, the U-shaped bottom frame having a holding groove, one end of the U-shaped bottom frame being hinged to a U-shaped buckle plate covering the U-shaped bottom frame, and the other end of the U-shaped bottom frame having a protruding handle.

[0011] Furthermore, the water supply component includes a water storage frame constructed at the bottom of the base frame, a water inlet pipe constructed on one side of the water storage frame, the upper end of the water inlet pipe being open and a sealing block being detachably inserted therein, a water pump fixedly connected to the top of the base frame at one end being connected to the atomizing head, and a water pump fixedly connected to the other end of the water pump being a water suction hose abutting against the bottom of the water storage frame.

[0012] Furthermore, the four support columns have a hollow interior and their bottoms are connected to the water storage frame. The water circulation assembly includes four inclined tubes that are fixedly connected to the top of the support columns and embedded in the bottom of the projection top frame. A collection frame is connected between the ends of the four inclined tubes, and the bottom of the collection frame is connected to the cavity between the inclined refraction plate.

[0013] Furthermore, the collection frame includes a rectangular frame fixedly connected to the bottom of the projection top frame. The bottom of the rectangular frame is open, and the outer side of the open end is constructed with a U-shaped groove for abutting the inclined refraction plate. A column is fixedly connected to the top of the rectangular frame, and an arc plate with its concave surface facing downward is fixedly connected to the bottom of the column. The edge of the arc plate is constructed with four convex edges arranged in a circumferential array. The ends of the four inclined tubes are constructed with fan-shaped connecting pieces located inside the rectangular frame and arranged vertically opposite to the convex edges.

[0014] Furthermore, the top of the base frame is provided with an inclined guide channel located between the inclined refractive plates, and the lowest end of the inclined guide channel is provided with four drainage holes that are connected to the water storage frame.

[0015] The beneficial effects of this application are as follows: 1. This application sets four inclined refraction plates on the base frame to form a frustum-shaped transparent area, which is used to map the image on the multimedia tablet in the projection top frame. When the same pattern appears on the four multimedia tablets but from different angles, the frustum-shaped transparent area can combine the images to achieve the effect of 3D image display. This can better display the three-dimensional structure image of the robot, making it easier for students to view and deepen their understanding and memory of the structure.

[0016] 2. This application allows the multimedia tablet to be detached, so that the image projection mechanism can be directly positioned opposite the tilted refraction plate. Then, the image translucent sheets of the robot drawn by the student from the four perspectives of front, back, left, and right can be installed in it. This mechanism can be used to present the three-dimensional structure of the robot and show it to other students. On the one hand, the student's own drawing deepens the student's understanding of the robot's structure, and on the other hand, it can increase the student's confidence when displaying the work, thereby improving their memorization. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2 This is a three-dimensional half-sectional view of the present application; Figure 3 This is yet another three-dimensional structural half-sectional view of this application; Figure 4 This is a three-dimensional structural diagram of the projected top frame of this application; Figure 5 This application Figure 4 Exploded view of the three-dimensional structure; Figure 6 This application Figure 4 Another perspective on the three-dimensional structure; Figure 7 This is a three-dimensional structural diagram of the flat frame of this application; Figure 8 This application Figure 4 Half-section view of the three-dimensional structure; Figure 9 This application Figure 8 Enlarged view of point A in the middle; Figure 10 This is a half-sectional view of the three-dimensional structure of the water circulation component of this application; Reference numerals: 1. Base frame; 101. Sliding groove; 102. Inclined guide groove; 103. Drain hole; 2. Inclined refraction plate; 201. Slider; 202. Acrylic transparent plate; 3. Projection top frame; 301. Insertion groove; 302. Light transmission opening; 303. Abutment spring; 304. Abutment plate; 305. Limiting component; 3051. Strip groove; 3052. T-shaped limiting block; 3053. Support spring; 3054. Angled angle; 4. Support column; 5. Multimedia flat panel; 6. Image illumination projection mechanism; 601. Mounting groove; 602. Flat frame; 6021. U-shaped bottom frame 6022, holding tank; 6023, U-shaped buckle plate; 6024, protruding handle; 603, projection lamp; 7, water mist diffusion mechanism; 701, atomizing head; 702, water supply component; 7021, water storage frame; 7022, water inlet pipe; 7023, sealing block; 7024, water pump; 7025, water pumping hose; 703, water circulation assembly; 7031, inclined pipe; 7032, collection frame; 70321, rectangular frame; 70322, U-shaped slot; 70323, column rod; 70324, arc plate; 70325, protruding edge; 70326, fan-shaped connecting piece. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] like Figures 1-10 As shown, an interactive teaching system proposed in one embodiment of this application includes: The base frame 1 has four sliding grooves 101 arranged in a ring. Each sliding groove 101 has an inclined refractive plate 2 slidably installed inside it. It should be noted that the inclined refractive plate 2 is transparent and there are four of them. The edges of the four inclined refractive plates 2 are spliced ​​together to form a frustum-shaped structure. The sliding grooves 101 are designed to facilitate disassembly and replacement. After replacement, a fixing block needs to be inserted into the sliding groove 101 to limit the position of the inclined refractive plate 2. The fixing block is made of rubber and uses an interference fit to tightly abut against the inclined refractive plate 2. The projection top frame 3 is located directly above the base frame 1 and is connected by four support columns 4. Four multimedia tablets 5 are detachably installed inside the projection top frame 3 and are arranged opposite to each other in pairs with the inclined refraction plate 2. An image illumination projection mechanism 6 is installed inside the projection top frame 3 and is located directly above the multimedia tablets 5. The projection top frame 3 is arranged parallel to the base frame 1 and is located directly above the base frame 1. The frustum-shaped structure formed by the inclined refraction plate 2 is located between the projection top frame 3 and the base frame 1. There are four multimedia tablets 5, which are arranged opposite to each other in pairs with the inclined refraction plate 2. It should be noted that the multimedia tablets 5 are common tablet computers and can be connected to each other through wires. Their operation is controlled by a control motherboard. They can simultaneously project the images and video content stored in them so that they can be projected inside the frustum-shaped structure formed by the inclined refraction plate 2 to form a 3D projection image. When the multimedia tablets 5 are detached, the image illumination projection mechanism 6 will be exposed and arranged opposite to the inclined refraction plate 2, so as to facilitate the projection of the light-transmitting sheet with the graphics drawn on it, thereby increasing the functionality and flexibility of the device. This device has two usage modes. One is the teaching mode: the teacher can prepare the robot images to be shown to the students in advance and store them in the multimedia tablet 5. Then, the teacher can use the projection of the tilting refraction plate 2 to combine the four images into a 3D projection, which makes it easier for students to observe the three-dimensional shape of the robot, help students better understand the structure of the robot, and increase the memory effect. The other is the display mode: students can use a pen to draw the mechanical mechanism or robot shape they want to display on the light-transmitting sheet (transparent plastic sheet). They can draw a total of four images from different perspectives, namely, the front, back, left, and right perspectives of the robot or mechanical mechanism. Then, the four different perspective images are installed in the picture lighting projection mechanism 6. The projected images are combined and displayed using lighting. On the one hand, the students' multi-angle drawing deepens their understanding of the robot or mechanical structure. On the other hand, it can also increase the students' confidence when displaying their work, thereby improving their memory. The water mist diffusion mechanism 7 includes an atomizing head 701 detachably mounted on the base frame 1 and located between four inclined refraction plates 2. A water supply component 702 connected to the atomizing head 701 is provided inside the base frame 1. A water circulation component 703 is provided between the projection top frame 3 and the base frame 1. Since teaching is mostly conducted during the day when the ambient light is large, it will affect the display effect of 3D images. Therefore, the combined operation of the atomizing head 701 and the water supply component 702 can be used to fill the cone-shaped structure with mist, thereby displaying the images more clearly. The water circulation component 703 can be used to recycle the sprayed water mist, saving resources and increasing the adaptability and functionality of the device.

[0020] like Figures 1-2As shown, in some embodiments, the base frame 1 is rectangular and the sliding grooves 101 are respectively constructed on its four sides. The inclined refractive plate 2 includes a slider 201 slidably installed in the sliding groove 101. An acrylic transparent plate 202 is inclinedly constructed on the slider 201. An anti-fog film is attached to the inclined bottom surface of the acrylic transparent plate 202. The acrylic transparent plate 202 is inclinedly constructed on the slider 201. Therefore, the slider 201 and the sliding groove 101 are in a horizontal sliding fit, which can facilitate the installation and removal of the slider 201. The anti-fog film is an existing car window film, which can effectively prevent fog droplets from remaining on the acrylic transparent plate 202, ensuring light transmittance and making the image display clearer.

[0021] like Figure 4 , Figure 6 and Figure 8 As shown, in some embodiments, the four sides of the projection top frame 3 are provided with insertion slots 301, and the bottom of the insertion slots 301 is provided with light-transmitting openings 302. The inner end of the insertion slots 301 is connected to a contact plate 304 through a contact spring 303, which is mainly used to automatically pop out when the multimedia tablet 5 is removed, increasing convenience. Both sides of the opening end of the insertion slots 301 are equipped with limiting members 305 for locking the multimedia tablet 5. When the multimedia tablet 5 is inserted into the insertion slots 301, it is necessary to ensure that its screen side faces downward, so that the light-transmitting opening 302 is set opposite to the inclined refraction plate 2. The limiting members 305 can lock and limit the end of the multimedia tablet 5, fix its position to prevent it from falling, and increase the safety of the device.

[0022] like Figures 8-9 As shown, in some embodiments, the limiting member 305 includes a strip groove 3051 formed on both sides of the opening end of the insertion slot 301. A T-shaped limiting block 3052 is slidably inserted into the strip groove 3051. A support spring 3053 is connected between one end of the T-shaped limiting block 3052 and the inner end of the strip groove 3051. The other end of the T-shaped limiting block 3052 is formed with an angle 3054. When it is necessary to install the multimedia tablet 5, it can be pushed into the strip groove 3051 by directly abutting it against the angle 3054 of the two T-shaped limiting blocks 3052. Until the multimedia tablet 5 completely passes the T-shaped limit block 3052, the support spring 3053 will push the T-shaped limit block 3052 to abut against the corner of the multimedia tablet 5, thereby limiting and fixing it to prevent it from falling. The other end of the multimedia tablet 5 is also tightly abutted by the abutment plate 304, which improves its stability after installation and prevents shaking. When it needs to be removed, simply push the two T-shaped limit blocks 3052 away from each other, and the multimedia tablet 5 will automatically pop out under the push of the abutment spring 303, increasing convenience.

[0023] like Figure 5As shown, in some embodiments, the image illumination projection mechanism 6 includes a mounting groove 601 constructed on the side of the projection top frame 3 and communicating vertically with the insertion groove 301. A flat frame 602 for holding the light-transmitting sheet is inserted into the open end of the mounting groove 601. A projection lamp 603 located directly above the mounting groove 601 is installed inside the projection top frame 3. The mounting groove 601 is mainly used for horizontal insertion of the flat frame 602, while the flat frame 602 is used to hold and fix the light-transmitting sheet (a transparent plastic sheet with a pattern). The pattern on the light-transmitting sheet can be projected by the illumination of the projection lamp 603 and combined on the four inclined refraction plates 2 to form a 3D pattern, which is convenient for displaying students' drawings and increases the functionality of the device.

[0024] like Figure 7 As shown, in some embodiments, the flat frame 602 includes a U-shaped bottom frame 6021 slidably inserted into the mounting groove 601. The U-shaped bottom frame 6021 has a holding groove 6022. One end of the U-shaped bottom frame 6021 is hinged to a U-shaped buckle plate 6023 covering it. The other end of the U-shaped bottom frame 6021 has a protruding handle 6024. When it is necessary to install the light-transmitting sheet, the flat frame 602 can be completely pulled out, and then the U-shaped buckle plate can be lifted. The patterned light-transmitting sheet can be placed into the holding slot 6022 using plate 6023, and then the herringbone buckle plate 6023 is fastened to the herringbone base frame 6021 to fix the position of the light-transmitting sheet, ensuring that the projected image of the four light-transmitting sheets can be accurately combined after installation. It should be noted that the hinge end between the herringbone buckle plate 6023 and the herringbone base frame 6021 is the insertion end, which facilitates the use of the mounting slot 601 to limit and fix the herringbone buckle plate 6023.

[0025] like Figures 2-3 As shown, in some embodiments, the water supply component 702 includes a water storage frame 7021 constructed at the bottom of the base frame 1. A water inlet pipe 7022 is constructed on one side of the water storage frame 7021. The upper end of the water inlet pipe 7022 is open and a sealing block 7023 is detachably inserted therein. A water pump 7024 is fixedly connected to the top of the base frame 1, with one end connected to the atomizing head 701. The other end of the water pump 7024 is fixedly connected to a water suction hose 7025 that abuts against the bottom of the water storage frame 7021. When it is necessary to display images during the day, the sealing block 7023 can be opened to pour water into the water inlet pipe 7022, and then the water pump 7024 can be used to directly inject the water into the atomizing head 701. The atomizing head 701 adopts an existing electronic atomizer and has a ceramic atomizing plate inside for atomizing and spraying the water source, thereby filling the frustum space between the inclined refractive plates 2 with mist, which facilitates clearer light reflection and enhances the students' viewing experience.

[0026] like Figure 3 and Figure 10As shown, in some embodiments, the four support columns 4 have a hollow interior and their bottoms are connected to the water storage frame 7021. The water circulation component 703 includes four inclined tubes 7031 fixedly connected to the top of the support columns 4 and embedded in the bottom of the projection top frame 3. The ends of the four inclined tubes 7031 are connected to a collection frame 7032. The bottom of the collection frame 7032 is connected to the cavity between the inclined refractive plate 2. Since the atomization in this device uses water as the atomizer, it will not have any pollution effect. Therefore, the water circulation component 703 can be used to recycle the water, thereby saving water resources. When the atomized gas rises, some of it will come into contact with the collection frame 7032 and condense into water droplets, which enter the inclined tubes 7031 and finally flow back into the water storage frame 7021 from the hollow interior of the support columns 4, thus forming a cycle, ensuring the utilization rate of resources, and increasing the functionality of the device.

[0027] like Figure 3 and Figure 10 As shown, in some embodiments, the collection frame 7032 includes a rectangular frame 70321 fixedly connected to the bottom of the projection top frame 3. The bottom of the rectangular frame 70321 is open, and the outer side of the open end is provided with a U-shaped slot 70322 for abutting against the inclined refraction plate 2. A column rod 70323 is fixedly connected to the top of the rectangular frame 70321. A concave arc plate 70324 with its concave surface facing downward is fixedly connected to the bottom of the column rod 70323. The edge of the arc plate 70324 is provided with four convex edges 70325 arranged in a circumferential array. The ends of the four inclined tubes 7031 are provided with a structure located inside the rectangular frame 70321 and perpendicular to the surface of the inclined tubes 70321. The fan-shaped receiving plates 70326, arranged vertically opposite to the convex edge 70325, will first contact the arc plate 70324 when the water mist rises. The arc plate 70324 is made of metal, and its temperature is lower than that of the water mist. When it comes into contact with the water mist, it will cause the water mist to condense into water droplets and adhere to the concave surface of the arc plate 70324. When the water droplets gather together, they will eventually drip onto the fan-shaped receiving plates 70326 through the guide of the convex edge 70325. This will continuously guide the water droplets into the inclined tube 7031 to complete the water circulation operation. This structure can accelerate the collection of a large amount of water mist, improve circulation efficiency, and ensure resource utilization.

[0028] like Figure 2 As shown, in some embodiments, the top of the base frame 1 is constructed with an inclined guide channel 102 located between the inclined refractive plates 2. The lowest end of the inclined guide channel 102 is constructed with four drain holes 103 connected to the water storage frame 7021. When some water mist comes into contact with the inclined refractive plates 2 and other parts of the frustum-shaped space except for the collection frame 7032, it will also condense into water droplets and slide into the inclined guide channel 102. The inclined guide channel 102 can be used to collect these water droplets and guide them directly into the water storage frame 7021 through the drain holes 103, avoiding the waste of water resources and ensuring the integrity of the water cycle.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An interactive teaching system, characterized in that, include: The base frame (1) has four sliding grooves (101) arranged in a ring array on the base frame (1), and each sliding groove (101) has an inclined refractive plate (2) slidably installed in it. The projection top frame (3) is located directly above the base frame (1) and is connected by four support columns (4). Four multimedia flat panels (5) are detachably installed inside the projection top frame (3) and are arranged opposite to the inclined refraction plate (2). A picture illumination projection mechanism (6) is installed inside the projection top frame (3) and is located directly above the multimedia flat panel (5). The water mist diffusion mechanism (7) includes an atomizing head (701) that is detachably mounted on a base frame (1) and located between four inclined refraction plates (2). A water supply component (702) connected to the atomizing head (701) is provided inside the base frame (1). A water circulation component (703) is provided between the projection top frame (3) and the base frame (1).

2. The interactive teaching system according to claim 1, characterized in that, The base frame (1) is rectangular and the sliding grooves (101) are respectively constructed on its four sides. The inclined refractive plate (2) includes a slider (201) slidably installed in the sliding groove (101). An acrylic transparent plate (202) is inclinedly constructed on the slider (201), and an anti-fog film is attached to the inclined bottom surface of the acrylic transparent plate (202).

3. The interactive teaching system according to claim 1, characterized in that, The projection top frame (3) has four sides with insertion slots (301), the bottom of the insertion slots (301) has a light-transmitting opening (302), the inner end of the insertion slots (301) is connected to a contact plate (304) by a contact spring (303), and the two sides of the opening end of the insertion slots (301) are equipped with limiting members (305) for snapping onto the multimedia tablet (5).

4. The interactive teaching system according to claim 3, characterized in that, The limiting member (305) includes a strip groove (3051) constructed on both sides of the opening end of the insertion groove (301), a T-shaped limiting block (3052) is slidably inserted in the strip groove (3051), a support spring (3053) is connected between one end of the T-shaped limiting block (3052) and the inner end of the strip groove (3051), and the other end of the T-shaped limiting block (3052) is constructed with an angle (3054).

5. The interactive teaching system according to claim 1, characterized in that, The image illumination projection mechanism (6) includes a mounting groove (601) constructed on the side of the projection top frame (3) and communicating vertically with the insertion groove (301). A flat frame (602) for holding the light-transmitting sheet is inserted and installed at the open end of the mounting groove (601). A projection lamp (603) located directly above the mounting groove (601) is installed inside the projection top frame (3).

6. The interactive teaching system according to claim 5, characterized in that, The flat frame (602) includes a spiral-shaped bottom frame (6021) that is slidably inserted into the mounting groove (601). The spiral-shaped bottom frame (6021) has a holding groove (6022) inside. One end of the spiral-shaped bottom frame (6021) is hinged to a spiral-shaped buckle plate (6023) covering the spiral-shaped bottom frame (6021). The other end of the spiral-shaped bottom frame (6021) has a protruding handle (6024).

7. The interactive teaching system according to claim 1, characterized in that, The water supply component (702) includes a water storage frame (7021) constructed at the bottom of the base frame (1). A water inlet pipe (7022) is constructed on one side of the water storage frame (7021). The upper end of the water inlet pipe (7022) is open and a sealing block (7023) is detachably inserted therein. A water pump (7024) is fixedly connected to the top of the base frame (1) at one end, which is connected to the atomizing head (701). The other end of the water pump (7024) is fixedly connected to a water pumping hose (7025) that abuts against the bottom of the water storage frame (7021).

8. The interactive teaching system according to claim 7, characterized in that, The four support columns (4) have a hollow structure inside and their bottoms are connected to the water storage frame (7021). The water circulation assembly (703) includes four inclined tubes (7031) that are fixedly connected to the top of the support column (4) and embedded in the bottom of the projection top frame (3). The ends of the four inclined tubes (7031) are connected to a collection frame (7032). The bottom of the collection frame (7032) is connected to the cavity between the inclined refractive plate (2).

9. The interactive teaching system according to claim 8, characterized in that, The collection frame (7032) includes a rectangular frame (70321) fixedly connected to the bottom of the projection top frame (3). The bottom of the rectangular frame (70321) is open and the outer side of the open end is constructed with a loop-shaped slot (70322) for abutting the inclined refraction plate (2). A column rod (70323) is fixedly connected to the top of the rectangular frame (70321). A concave arc plate (70324) is fixedly connected to the bottom of the column rod (70323). The edge of the arc plate (70324) is constructed with four convex edges (70325) arranged in a circumferential array. The ends of the four inclined tubes (7031) are constructed with fan-shaped connecting pieces (70326) located inside the rectangular frame (70321) and arranged vertically opposite to the convex edges (70325).

10. The interactive teaching system according to claim 7, characterized in that, The base frame (1) has an inclined guide channel (102) at the top, located between the inclined refractive plates (2), and the lowest end of the inclined guide channel (102) has four drainage holes (103) that are connected to the water storage frame (7021).

Images