Experiment innovation teaching aid for object motion research

Abstract

The utility model discloses an experiment innovation teaching aid for object motion research, which comprises a horizontal sliding seat and a vertical support which are placed on a horizontal plane, a sliding plate is connected between the horizontal sliding seat and the vertical support, and an adjusting device used for adjusting the height of one end of the sliding plate so as to adjust the inclination angle of the sliding plate is arranged between the sliding plate and the vertical support. The sliding plate is provided with a first sliding groove which extends in the length direction of the sliding plate and allows an object to be placed in and slide, the horizontal sliding seat is provided with a second sliding groove, a displacement sensor and a displacement displayer, the two ends of the second sliding groove are open, one end of the second sliding groove is open and communicated with the first sliding groove, and the object slides into the second sliding groove from the first sliding groove. The telescopic pull rod is provided with a baffle which can block the opening, away from the first sliding groove, of the second sliding groove and drive the telescopic pull rod to stretch out of the displacement sensor to enable the displacement displayer to display the displacement amount when being impacted by an object. The teaching aid is simple in structure, enables experiments to be concrete, and guides students to learn change rules of movement and force.

Description

Technical Field

[0001] The utility model relates to an experimental innovation teaching aid for the study of object motion.

Background Art

[0002] In primary schools, science courses are important subjects for students to learn scientific knowledge, cultivate scientific literacy, and stimulate their interest in exploring the world. To help students learn, many experimental teaching aids are used in science classes, enabling students to complete relevant experiments by themselves. For example, when learning theories related to motion and force, experimental teaching aids such as "moving balls" and "bumping chess" are needed for experiments. However, the existing experimental teaching aids are relatively simple, and students can only obtain abstract change laws of object motion and force, which is not conducive to students' understanding of the concepts and related theories of motion and force.

[0003] Therefore, the present utility model is precisely generated based on the above deficiencies.

Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an experimental innovation teaching aid for the study of object motion with a simple structure and visualized experiments.

[0005] The present utility model is realized by the following technical solutions:

[0006] An experimental innovation teaching aid for the study of object motion, characterized in that it includes a horizontal sliding seat 1 placed on a horizontal plane and a vertical support 2. A sliding plate 3 is connected between the horizontal sliding seat 1 and the vertical support 2. An adjusting device 4 is provided between the sliding plate 3 and the vertical support 2 for adjusting the height of one end of the sliding plate 3 to adjust the inclination angle of the sliding plate 3. A first chute 31 extending along the length direction of the sliding plate 3 and capable of allowing an object to be placed and slide is provided on the sliding plate 3. A second chute 11 with both ends open and one end open communicating with the first chute 31 for the object to slide into from the first chute 31, a displacement sensor 5 with a telescopic rod 51 at one end, and a displacement display 6 electrically connected to the displacement sensor 5 are provided on the horizontal sliding seat 1. A baffle 7 capable of blocking the opening of the second chute 11 away from the first chute 31 and driving the telescopic rod 51 to extend out of the displacement sensor 5 when hit by an object to make the displacement display 6 display the displacement amount is provided on the telescopic rod 51.

[0007] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: a horizontal scale line 12 is provided on the horizontal sliding seat 1 along its length direction; a first sensor 8 which is located on one side of the starting scale point of the horizontal scale line 12 and can sense an object passing through the starting scale point, a second sensor 9 which is located on one side of the end scale point of the horizontal scale line 12 and can sense an object passing through the end scale point, and a timer 10 which starts timing when the first sensor 8 senses the passing of an object and stops timing when the second sensor 9 senses the passing of an object are provided on the horizontal sliding seat 1.

[0008] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: a vertical scale line 21 is provided on the vertical support 2; the adjusting device 4 includes a plurality of positioning blocks 41 which are provided on the vertical support 2 and are arranged at intervals along the vertical scale line 21, and a clamping block 42 which is provided at one end of the sliding plate 3 and can be clamped on one positioning block 41 for positioning.

[0009] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: the vertical support 2 includes a base 22 and a U-shaped groove 23 provided on the base 22; a plurality of the positioning blocks 41 are respectively and correspondingly provided on the two opposite inner walls of the U-shaped groove 23, and two clamping blocks 42 are provided and arranged on both sides of the end of the sliding plate 3.

[0010] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: the first chute 31 includes a first small ball chute 311 which extends along the length direction of the sliding plate 3 and can accommodate the small ball 20, and a first small car chute 312 which is arranged side by side with the first small ball chute 311 and can accommodate the sail car 30; the second chute 11 includes a second small ball chute 111 which extends along the length direction of the horizontal sliding seat 1 and is communicated with the first small ball chute 311, and a second small car chute 112 which is arranged side by side with the second small ball chute 111 and is communicated with the first small car chute 312.

[0011] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: a fan 40 which can blow the sail car 30 when the sail car 30 is in the initial position of the first small car chute 312 is provided on the vertical support 2.

[0012] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: a camera 50 which can record the motion state of an object is provided on the vertical support 2.

[0013] The experimental innovative teaching aid for the study of object motion as described above is characterized in that: the camera 50 is detachably installed on the vertical support 2, and a card slot 301 for the camera 50 to be inserted into is provided on the sail car 30.

[0014] The experimental innovative teaching aid for object motion research as described above is characterized in that: an angle gauge 60 for measuring the inclination angle of the skateboard 3 is provided on the skateboard 3.

[0015] The experimental innovative teaching aid for object motion research as described above is characterized in that: an installation cavity 13 is provided on the horizontal sliding seat 1, and the displacement sensor 5, the displacement display 6 and the timer 10 are arranged in the installation cavity 13, and one end of the telescopic pull rod 51 passes through the installation cavity 13 and is connected to the baffle 7.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The inclination angle of the skateboard of the utility model can be adjusted by the adjusting device. The object is released from different heights multiple times. After the object slides along the first chute and the second chute and impacts the baffle, the displacement value of the baffle displayed on the displacement display is recorded. Through the concrete experimental data, the invisible energy is converted into the visible displacement, which allows students to directly observe, and guides students to summarize and discover the variation laws of motion and force. It promotes the improvement of students' experimental exploration ability and the development of scientific thinking, and helps students understand the object motion laws.

[0018] 2. The timer of the utility model is started by the first sensor and stopped by the second sensor. In this way, when the object moves the same distance, the corresponding motion speed can be calculated by reading the time of the timer.

[0019] 3. By adjusting the fan speed gear of the utility model, the sail car can move under different initial wind forces, which enables students to recognize that the wind force can be used to drive the sail car and explore the factors affecting the movement speed of the sail car.

[0020] 4. Whether the sail car is moving can be judged by switching the camera view angle of the utility model, which guides students to think that when different reference objects are selected to describe the same object, the motion states may be different.

Description of the Drawings

[0021] Figure 1 is the three-dimensional view of the utility model;

[0022] Figure 2 is the top view of the utility model;

[0023] Figure 3 is the structural schematic diagram of the utility model when the skateboard is separated from the vertical support;

[0024] Figure 4 is the structural schematic diagram of the utility model when the small ball and the sail car are placed on the skateboard;

[0025] Figure 5 is the structural schematic diagram of the utility model when the skateboard is flattened;

[0026] Figure 6 It is a schematic diagram of installing the camera of the present utility model on the sail trolley.

Specific Embodiment

[0027] The present utility model will be further described below with reference to the accompanying drawings:

[0028] As Figures 1 to 6 shown, an experimental innovation teaching aid for the study of object motion includes a horizontal sliding seat 1 placed on a horizontal plane and a vertical support 2. A sliding plate 3 is connected between the horizontal sliding seat 1 and the vertical support 2. An adjusting device 4 for adjusting the height of one end of the sliding plate 3 to adjust the inclination angle of the sliding plate 3 is provided between the sliding plate 3 and the vertical support 2. A first chute 31 extending along the length direction of the sliding plate 3 and allowing an object to be placed and slide is provided on the sliding plate 3. A second chute 11 with both ends open and one end open communicating with the first chute 31 for the object to slide into from the first chute 31, a displacement sensor 5 with a telescopic rod 51 at one end, and a displacement display 6 electrically connected to the displacement sensor 5 are provided on the horizontal sliding seat 1. A baffle 7 capable of blocking the opening of the second chute 11 away from the first chute 31 and driving the telescopic rod 51 to extend out of the displacement sensor 5 when hit by an object to make the displacement display 6 display the displacement amount is provided on the telescopic rod 51. Specifically, the left opening of the second chute 11 is blocked by the baffle 7, the right opening communicates with the first chute 31, and a support block 14 extending to one side is provided on the horizontal sliding seat 1 near the right opening of the second chute 11. One end of the sliding plate 3 abuts against the support block 14. In this way, when the height of the other end of the sliding plate 3 is adjusted by the adjusting device 4, the inclination angle of the sliding plate 3 will change. Then, the object is released from different heights multiple times. The object slides along the first chute 31 and the second chute 11 and then hits the baffle 7. The displacement value of the baffle 7 displayed on the displacement display 6 is recorded. Through the concrete experimental data, the invisible energy is converted into visible displacement, allowing students to directly observe, guiding students to summarize and discover the variation laws of motion and force. It promotes the improvement of students' experimental exploration ability and the development of scientific thinking, and helps students understand the object motion law.

[0029] Further, a horizontal scale line 12 is provided on the horizontal sliding seat 1 in the length direction. On the horizontal sliding seat 1, there are a first sensor 8 located on one side of the starting scale point of the horizontal scale line 12 and capable of sensing the passing of an object through the starting scale point, a second sensor 9 located on one side of the ending scale point of the horizontal scale line 12 and capable of sensing the passing of an object through the ending scale point, and a timer 10 that starts timing when the first sensor 8 senses the passing of an object and stops timing when the second sensor 9 senses the passing of an object. The first sensor 8 and the second sensor 9 are diffuse reflection infrared photoelectric sensors, which receive the optical signals reflected from the surface of the object and convert them into electrical signals. The first sensor 8 controls the timer 10 to start timing, and the second sensor 9 controls the timer 10 to stop timing. In this way, when the object moves the same distance, the corresponding moving speed can be calculated by reading the time of the timer 10.

[0030] As Figure 3 shown, a vertical scale line 21 is provided on the vertical support 2. The adjusting device 4 includes a plurality of positioning blocks 41 provided on the vertical support 2 and arranged at intervals along the vertical scale line 21, and a clamping block 42 provided at one end of the sliding plate 3 and capable of being clamped on one positioning block 41 for positioning. The positioning block 41 is an L-shaped block, and L-shaped blocks are respectively pasted and fixed at the corresponding positions of 0, 10, 15, 20, 25, and 30 centimeters on the vertical scale line 21. The L-shaped block and the wall surface of the vertical support 2 enclose a card slot. The clamping block 42 is a convex block protruding from the sliding plate 3 to the side and clamped into the card slot. By clamping the convex block on the L-shaped blocks corresponding to 0, 10, 15, 20, 25, and 30 centimeters respectively, the inclination angle of the sliding plate 3 can be adjusted.

[0031] Specifically, the vertical support 2 includes a base 22 and a U-shaped groove 23 provided on the base 22. A plurality of positioning blocks 41 are respectively provided on the two opposite inner walls of the U-shaped groove 23 in a one-to-one correspondence, and two clamping blocks 42 are provided and arranged on both sides of the end of the sliding plate 3.

[0032] As Figure 4 shown, the first chute 31 includes a first small ball chute 311 extending along the length direction of the sliding plate 3 and capable of accommodating the small ball 20, and a first small car chute 312 arranged side by side with the first small ball chute 311 and capable of accommodating the sail car 30. The second chute 11 includes a second small ball chute 111 extending along the length direction of the horizontal sliding seat 1 and communicating with the first small ball chute 311, and a second small car chute 112 arranged side by side with the second small ball chute 111 and communicating with the first small car chute 312.

[0033] In the present utility model, a fan 40 capable of blowing the sail car 30 when the sail car 30 is in the initial position of the first small car chute 312 is provided on the vertical support 2. The fan 40 is a multi-gear wind fan. As Figure 5As shown, in the experiment of the sail car, the skateboard is flattened, and the fan 40 serves as the power source to drive the sail car 30. The fan 40 can blow the sail on the sail car 30 to make the sail car 30 move on the first car chute 312 and the second car chute 112. By adjusting the gear of the fan 40, the sail car 30 can move under different initial wind forces, enabling students to realize that wind power can be used to drive the sail car and explore the factors affecting the movement speed of the sail car.

[0034] In the present utility model, a camera 50 capable of recording the motion state of an object is provided on the vertical bracket 2. When the sail car 30 is released from a height, it can be judged whether the sail car 30 is moving through the perspective of the camera 50.

[0035] Furthermore, the camera 50 is detachably mounted on the vertical bracket 2, and a card slot 301 for the camera 50 to be inserted is provided on the sail car 30. The camera 50 is fixed inside the sail car 30, with the lens perspective aligned with the internal structure of the car. The sail car 30 is released from a height, and it is judged whether the sail car is moving from the perspective of the camera.

[0036] In the present utility model, an inclinometer 60 capable of measuring the inclination angle of the skateboard 3 is provided on the skateboard 3. The inclinometer 60 allows students to directly read the inclination angle between the skateboard 3 and the horizontal plane.

[0037] In the present utility model, an installation cavity 13 is provided on the horizontal sliding seat 1. A displacement sensor 5, a displacement display 6, and a timer 10 are arranged in the installation cavity 13, and one end of the telescopic pull rod 51 passes through the installation cavity 13 and is connected to the baffle 7.

[0038] This experimental innovative teaching aid is applicable to the experimental teaching of the "Motion and Force" series, for example:

[0039] I. Observe the motion phenomenon of the car

[0040] Fix the camera inside the car, with the lens perspective aligned with the internal structure of the car. Release the car from a height, and judge whether the car is moving from the perspective of the camera. Switch the camera perspective, release the car again, and judge whether the car is moving from the perspective of the camera. Guide students to think that when choosing different reference objects to describe the same object, the motion state may be different.

[0041] II. Explore the relationship between the motion speed of an object and the inclination angle of the inclined plane

[0042] In this experiment, first start the first sensor, the second sensor, and the timer. Place the small ball at the top of the skateboard. By releasing the small ball from different heights multiple times, record the time shown on the timer when the small ball passes through a fixed distance (50 cm). According to the relationship between distance, speed, and time, calculate the average value and analyze the motion speed of the object. In the experiment, the inclination angle of the skateboard inclined plane and the starting height are in a proportional relationship, that is, the larger the inclination angle, the higher the starting position.

[0043] III. Explore the relationship between the energy of a moving object and its speed

[0044] In this experiment, first start the displacement sensor and the displacement display. Place the small ball at the top of the skateboard. By releasing the same small ball from different heights multiple times, record the value of the displacement sensor on the displacement display after the small ball hits the baffle, and analyze the change trend of the displacement value. In the experiment, the higher the initial position of the small ball's movement, the faster its movement speed, and the longer the displacement generated when hitting the baffle, indicating that the greater the energy of the small ball. The lower the initial position of the small ball's movement, the slower its movement speed, and the shorter the displacement when hitting the baffle, indicating that the smaller the energy of the small ball.

[0045] IV. Explore the relationship between the energy of a moving object and its mass

[0046] In this experiment, turn on the displacement sensor and the displacement display. Release small balls made of different materials such as plastic balls, glass balls, and stainless steel balls with a diameter of 3 cm from the same height, and record the value of the displacement sensor on the displacement display after the small balls hit the baffle; under the condition of a certain speed, analyze and compare the displacement values generated after the plastic ball, the glass ball, and the stainless steel ball hit the electronic displacement ruler.

Claims

1. An innovative experimental teaching aid for studying the motion of objects, characterized in that: The invention comprises a horizontal slide seat (1) and a vertical support (2) placed on a horizontal plane, a slide plate (3) being connected between the horizontal slide seat (1) and the vertical support (2), an adjusting device (4) for adjusting the height of one end of the slide plate (3) and thus adjusting the inclination angle of the slide plate (3) being arranged between the slide plate (3) and the vertical support (2), the slide plate (3) being provided with a first slide groove (31) extending along the length direction of the slide plate (3) and capable of allowing an object to slide in, the horizontal slide seat (1) being provided with a first slide groove (31) having two ends open and one end open. A second slide groove (11) is connected to the first slide groove (31) for an object to slide into from the first slide groove (31), a displacement sensor (5) having a retractable pull rod (51) at one end, and a displacement display (6) electrically connected to the displacement sensor (5), wherein the retractable pull rod (51) is provided with a baffle (7) which can block the second slide groove (11) away from the opening of the first slide groove (31) and drive the retractable pull rod (51) to extend out of the displacement sensor (5) when hit by an object, so that the displacement display (6) displays the displacement amount.

2. The experimental innovative teaching aid for object motion research according to claim 1, characterized in that: The horizontal slide (1) is provided with horizontal scale lines (12) along the length direction, and the horizontal slide (1) is provided with a first sensor (8) located on the side of the starting scale point of the horizontal scale line (12) and capable of sensing an object passing through the starting scale point, a second sensor (9) located on the side of the ending scale point of the horizontal scale line (12) and capable of sensing an object passing through the ending scale point, and a timer (10) which starts timing when the first sensor (8) senses that an object has passed through and stops timing when the second sensor (9) senses that an object has passed through.

3. The experimental innovative teaching aid for object motion research according to claim 1, characterized in that: The vertical bracket (2) is provided with a vertical scale line (21), and the adjustment device (4) comprises a plurality of positioning blocks (41) arranged on the vertical bracket (2) and spaced apart along the vertical scale line (21), and a clamping block (42) arranged on one end of the slide plate (3) and capable of being clamped on a positioning block (41) for positioning.

4. The innovative experimental teaching aid for object motion research according to claim 3, characterized in that: The vertical bracket (2) comprises a base (22) and a U-shaped groove (23) arranged on the base (22); a plurality of positioning blocks (41) are respectively arranged on two opposite inner walls of the U-shaped groove (23) in a one-to-one correspondence; and two clamping blocks (42) are provided and are arranged on both sides of the end of the slide plate (3).

5. The experimental innovative teaching aid for object motion research according to claim 1, characterized in that: The first chute (31) comprises a first ball chute (311) extending along the length direction of the slide plate (3) and capable of receiving the ball (20) therein, and a first trolley chute (312) arranged side by side with the first ball chute (311) and capable of receiving the sailing trolley (30) therein, and the second chute (11) comprises a second ball chute (111) extending along the length direction of the horizontal slide seat (1) and connected to the first ball chute (311), and a second trolley chute (112) arranged side by side with the second ball chute (111) and connected to the first trolley chute (312).

6. The innovative experimental teaching aid for object motion research according to claim 5, characterized in that: The vertical support (2) is provided with a fan (40) capable of blowing the sailing trolley (30) when the sailing trolley (30) is located at the initial position of the first trolley slide groove (312).

7. The innovative experimental teaching aid for object motion research according to claim 5, characterized in that: The vertical support (2) is provided with a camera (50) capable of recording the movement state of an object.

8. The innovative experimental teaching aid for object motion research according to claim 7, characterized in that: The camera (50) is detachably mounted on the vertical bracket (2), and the sailing vehicle (30) is provided with a slot (301) for the camera (50) to be installed.

9. The experimental innovative teaching aid for object motion research according to claim 1, characterized in that: The slide plate (3) is provided with an incline meter (60) capable of measuring the inclination angle of the slide plate (3).

10. The innovative experimental teaching aid for object motion research according to claim 2, characterized in that: The horizontal slide seat (1) is provided with a mounting cavity (13), the displacement sensor (5), the displacement display (6) and the timer (10) are arranged in the mounting cavity (13), and one end of the retractable pull rod (51) passes through the mounting cavity (13) and is connected to the baffle (7).

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