A teaching aid for verifying factors affecting pitch

Abstract

The utility model discloses a kind of factor teaching aids for verifying influence pitch, to solve the existing teaching aid Abstract, difficult for students to establish tightness, thickness and the direct correlation of vibrating part length and pitch change, and lack clear scale mark and hands-on participation space, not conducive to understanding sound related scientific law Problem.The utility model includes teaching aid ontology, ontology left end is equipped with protruding, protruding is equipped with fixed recess;Right end is equipped with the rotating connection's stand, stand is fixedly connected adjusting assembly, lower portion is equipped with dial, there is scale bar on dial, ontology middle is equipped with scale line, still be equipped with the slider that can slide on ontology.Positioning is carried out by slider, rotating adjusting assembly can change rope tightness, thickness and vibrating part length, different pitch is emitted by pulling rope.The teaching aid is consistent with Guzheng sound generation principle, can make abstract knowledge concretization, help students to intuitively perceive scientific law, improve class participation and teaching effect.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically to a teaching aid for verifying factors affecting pitch. Background Technology

[0002] In teaching the characteristics of sound in elementary school science, the relationship between pitch and vibration is a core knowledge point. However, this knowledge point is highly abstract, and existing teaching aids are insufficient to meet students' needs for concrete understanding. Most of the pitch demonstration tools currently used in classrooms are pre-set sound-producing devices with fixed pitches, which can only play sounds for students to listen to, but do not allow students to participate in the adjustment process themselves, making it difficult to help students establish a direct connection between different factors and pitch changes.

[0003] In daily life, the guzheng (a traditional Chinese zither) uses the tension, thickness, and length of its strings to change their vibration state and produce different pitches. This relatable example serves as an excellent vehicle for students to understand this concept. While some experimental tools have adjustment functions, the adjustment structures are unclear and lack clear markings. Students cannot clearly observe the correspondence between changes in tension, thickness, and the length of the vibrating part and pitch differences. This hinders their intuitive understanding of the scientific principles governing the relationship between tension, thickness, and the length of the vibrating part and pitch, and impedes a deeper understanding of the principle that sound is produced by vibration.

[0004] Therefore, there is an urgent need for a teaching and experimental tool that is manually adjustable, has clear markings, and conforms to the sound production principle of the guzheng. Summary of the Invention

[0005] The purpose of this invention is to provide a teaching tool for verifying factors affecting pitch. To achieve the above objectives, this utility model provides the following technical solution: A teaching aid for verifying factors affecting pitch includes a teaching aid body with a protrusion at the left end and a fixing groove on the protrusion; a column at the right end of the teaching aid body, rotatably connected to the teaching aid body; an adjustment component on the column; the column and the adjustment component being fixedly connected; a scale at the bottom of the column; a scale bar on the scale; a scale line in the middle of the teaching aid body; and a rope fixedly connected to the fixing groove, with the other end of the rope looped around the column.

[0006] Specifically, the teaching aid body is also provided with a slider, which can slide on the teaching aid body.

[0007] Specifically, the fixed groove on the left side of the teaching aid body is replaced with a column and an adjustment component, and the rope is divided into two sections in the middle, with one end being a thick rope and the other end being a thin rope. Beneficial effects

[0008] This invention aligns with the sound-producing principle of the guzheng (Chinese zither), allowing students to participate in manual adjustments. By manipulating the adjustment components, they can change the tension, length, and thickness of the vibrating part of the rope, helping them establish a direct correlation between tension and pitch changes. The teaching aid features clearly defined scales, allowing students to visually observe the correspondence between changes in tension, thickness, and the length of the vibrating part and pitch differences, easily grasping the relevant scientific principles.

[0009] At the same time, the hands-on process can make abstract knowledge of sound characteristics more concrete, deepen students' understanding of the principle that sound is generated by vibration, effectively improve the teaching effect and student participation in primary school science classes, and solve the problem that existing teaching aids cannot meet the needs of concrete cognition.

[0010] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a three-dimensional view of the structure of this utility model; Figure 2 This is a diagram showing the structure of this utility model in use; Figure 3 This is a three-dimensional view of the coarse and fine particle size test of this utility model; In the diagram: 1-Main body of the teaching aid; 2-Column; 3-Adjustment component; 4-Protrusion; 5-Fixing groove; 6-Scale dial; 7-Scale strip; 8-Scale line; 9-Slider; 10-Rope. Detailed Implementation

[0012] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] like Figure 1 As shown, a teaching tool for verifying factors affecting pitch includes a teaching tool body 1. The left end of the teaching tool body 1 has a protrusion 4 with a fixing groove 5. The right end has a column 2, which is rotatably connected to the teaching tool body 1. An adjustment component 3 is provided on the column 2, and the column 2 is fixedly connected to the adjustment component 3. A scale 6 is provided at the lower part of the column 2, with scale strips 7 on the scale 6. A scale line 8 is provided in the middle of the teaching tool body 1. A rope 10 is fixedly connected to the fixing groove 5, with the other end of the rope 10 looped around the column 2. The adjustment component 3 can be rotated to move the column 2, thereby tightening the rope 10. The rotational position of the column 2 can be precisely adjusted using the scale strips 7 on the scale 6 at the lower part of the column 2, thus precisely controlling the tightness of the rope 10.

[0017] Specifically, the teaching aid body 1 is also equipped with a slider 9, which can slide on the teaching aid body 1 and the position of the slider 9 can be precisely controlled by the scale line 8.

[0018] Specifically, the fixed groove 5 on the left side of the teaching aid body 1 is replaced with the adjustment component 3 and the column 2. A rope 10 of different thicknesses is selected. The rope 10 is divided into two sections from the middle, with one end being a thick rope and the other end being a thin rope. By setting the two ends of the rope 10 to different thicknesses, the effect of changing the thickness of the vibrating part of the rope 10 on the pitch can be shown to students, so as to achieve the experimental demonstration effect. Example

[0019] like Figures 1 to 2One end of the rope 10 is fixed in the fixing groove 5, and the other end is wrapped and fixed to the column 2. After fixing, the slider 9 is placed under the rope 10, so that the slider 9 lifts the rope 10. The position of the slider 9 is precisely positioned by the scale line 8. Then, the adjusting component 3 is pinched and rotated, thereby driving the column 2 to rotate, so as to achieve the technical effect of tightening the rope 10. The position of the adjusting component 3 is precisely controlled by the scale bar 7, so as to achieve the technical effect of precisely controlling the tightness of the rope. Sliding the slider 9 will make the vibrating part of the rope 10 on one side longer or shorter. At this time, plucking the rope 10 can clearly demonstrate to students that the timbre and pitch of the sound produced are different due to the different lengths and tightness of the vibrating part of the rope 10. The teaching aid body 1 has three experimental areas, which makes this device more like a guzheng, allowing students to more intuitively understand the experimental purpose that this teaching aid can achieve. Example

[0020] like Figure 3 Select a rope 10 with different thicknesses on the left and right sides. Wrap the thicker end of the rope 10 around and fix it to the left post 2, and the thinner end around and fix it to the right post 2. Because the rope 10 has different thicknesses on the left and right sides, there will be a dividing line in the middle of the rope. Adjust the left or right post 2 using the adjusting component 3 to position the dividing line in the middle of the teaching aid body 1, reducing the difference in the length of the vibrating parts of the rope 10 on both sides, thus achieving the experimental effect of controlling the variable. Then, place the slider 9 below the dividing line, that is, in the middle of the teaching aid body 1. The slider 9 will lift the rope 10 at the dividing line. At this point, the vibrating parts on both sides of the rope 10 will be the same length but different thicknesses, clearly demonstrating to students that changing the thickness of the rope 10 can achieve the experimental effect of changing the pitch.

[0021] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0022] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A teaching tool for verifying factors affecting pitch, characterized in that, The teaching aid includes a teaching aid body (1); the left end of the teaching aid body (1) is provided with a protrusion (4), and the protrusion (4) is provided with a fixing groove (5); the right end of the teaching aid body (1) is provided with a column (2), and the column (2) is rotatably connected to the teaching aid body (1); the column (2) is provided with an adjustment component (3), and the column (2) is fixedly connected to the adjustment component (3); the lower part of the column (2) is provided with a scale (6); the scale (6) is provided with a scale strip (7); the middle of the teaching aid body (1) is provided with a scale line (8); a rope (10) is fixedly connected to the fixing groove (5), and the other end of the rope (10) is sleeved on the column (2).

2. The teaching tool for verifying factors affecting pitch as described in claim 1, characterized in that, The teaching aid body (1) is also provided with a slider (9), which can slide on the teaching aid body (1).

3. The teaching tool for verifying factors affecting pitch as described in claim 1, characterized in that, The fixing groove (5) on the left side of the teaching aid body (1) is replaced by the column (2) adjustment component (3), and the rope (10) is divided into two sections from the middle, one end of which is a thick rope and the other end is a thin rope.

Images