CN209980572U - A function curve comparison demonstration teaching aid - Google Patents

Abstract

The utility model discloses a function curve comparison demonstration teaching aid, which comprises a box body, a bearing glass slide and a plurality of function curve cards. The lower part of the box body is connected with a light box, the front of the box body is a transparent display surface, and the top of the box body is provided with an opening , the back of the box is provided with a substrate; the carrier glass is placed upright in the box through the opening on the top; the carrier glass includes a transparent glass body and a fixed suction soft film, and two sides of the transparent glass body are respectively connected with a fixed suction The function curve card is a transparent card body and a function curve is drawn on the transparent card body; the utility model can demonstrate the change of the corresponding function curve with the change of the value of the abscissa or the ordinate; the teaching aid is extremely The earth facilitates mathematics teaching demonstration, enriches the interest of the course, and is convenient for students to understand and memorize; the utility model has the advantages of simple structure, reasonable setting, low production cost and the like.

Description

A function curve comparison demonstration teaching aid

technical field

The utility model relates to the technical field of mathematics teaching aids, in particular to a function curve comparison demonstration teaching aid.

Background technique

Teaching aids play an important role in teaching. Effective use of teaching aids can arouse students' interest in learning, stimulate students' intuitive imagery, and turn abstract mathematical knowledge into intuitive impressions, which are beneficial to students' better understanding.

In mathematics teaching, various function curves are a necessary part of teaching. In the existing teaching process, if students are only asked to compare the relationship between function curves from mathematical operations, it is difficult for students to remember deeply, especially when the abscissa axis and the ordinate axis are When the value of the axis is constantly changing, various related function curves will appear, which is difficult to understand only by abstract thinking, and it is time-consuming to draw by hand. Therefore, some schools have introduced experimental teaching methods. However, some of the existing function curve demonstration teaching aids have a single form and cannot compare the curves, and the teaching effect is general. Therefore, it is necessary to develop a demonstration tool that can facilitate the teaching demonstration of function curve comparison.

Utility model content

The utility model overcomes the deficiencies of the prior art, and provides a demonstration teaching aid with a simple structure, which can visually display the function curve comparison and reflect the corresponding function curve changes when the numerical value changes.

The technical scheme adopted by the utility model to solve its technical problems is:

A function curve comparison demonstration teaching aid, including a box body, a carrier glass and a plurality of function curve cards, the lower part of the box body is connected with a light box, the front side of the box body is a transparent display surface, and the top of the box body is provided with a light box. There are openings, two sides of the box body are opaque plates, and the back of the box body is provided with a substrate; the bearing glass is placed upright in the box through the opening provided at the top; the bearing glass The slide comprises a transparent glass slide body and a fixed suction soft film, two sides of the transparent glass slide body are respectively connected with a fixed suction soft film, and the side of the fixed suction soft film is connected with the side of the transparent glass slide body. The sides are connected; the height of the carrying glass slide is greater than the height of the box body; the function curve card is a transparent card body and a function curve is drawn on the transparent card body.

For specific use, place the drawn two function curve cards to be compared on both sides of the transparent glass slide body, and then cover the fixed suction soft film on the top of the function curve card to fix it; when placing the function curve card Coincide the coordinate axes of the two function curves; then insert the carrier glass with the function curve card placed into the box body from the opening at the top of the box body, and place it upright, choose a color that is in sharp contrast with the function curve color as the main substrate color, open the light box at the bottom, and you can compare and observe the function curve.

In a further preferred structure, a drawer is connected to the lower part of the light box for placing a plurality of function curve cards. This structure makes the demonstration teaching aids have the function of storage at the same time, and the cards of the commonly used function curves can be prepared and stored in the drawer for use.

In a further preferred structure, a groove is provided on the bottom surface of the box body, and the carrier glass slides into the box body through an opening at the top of the box body and is placed in the groove for positioning. The grooves at the bottom can position the carrier glass to prevent the carrier glass from being cut obliquely, which is more conducive to the observation of the displayed function curve.

In a further preferred structure, a side of the top of the box body away from the transparent display surface is provided with a plurality of substrate openings, and substrates of different colors are respectively inserted into the substrate openings. Insert multiple spare multi-color substrates at the back of the box body. According to the color of the function curve, you can choose a substrate with a sharp contrast and place it in the innermost layer for a more prominent foil curve, making it easier to observe .

In a further preferred structure, the upper surface of the light box is integrated with the bottom surface of the box body, the light box is provided with an LED illuminator, a power supply and a connection circuit, and the outer surface of the light box is provided with a switch control device. The light box is a conventional setting, and the circuit components in it are conventional circuits. The LED light-emitting lamp body, the switch device and the power supply are connected in series to enhance the display effect.

In a further preferred structure, the upper surface of the box body is provided with a first handle, and the top of the carrying glass is provided with a second handle.

In a further preferred structure, a reference cross is drawn in the center of the transparent glass slide body. For the two function curve cards put in, in order to ensure that the two coordinate axes coincide accurately, they can be placed according to the reference cross line.

The beneficial effects of the present invention relative to the prior art are as follows.

The utility model can demonstrate the relationship of the corresponding function curve changes with the change of the value of the abscissa or the ordinate. This teaching aid greatly facilitates the demonstration of mathematics teaching, and at the same time enriches the interest of the course, which is convenient for students to understand and memorize. The utility model has the advantages of simple structure, reasonable setting, low manufacturing cost and the like.

Description of drawings

FIG. 1 is a schematic structural diagram of a box body in Example 1. FIG.

FIG. 2 is a schematic structural diagram of a carrier glass slide in Example 1. FIG.

FIG. 3 is a process diagram of placing a function curve card in the carrier glass in Example 1. FIG.

FIG. 4 is a schematic structural diagram of a carrier glass on which a function curve card is placed in Example 1. FIG.

FIG. 5 is a schematic structural diagram of inserting the carrier glass slide into the box in Example 1. FIG.

FIG. 6 is a schematic structural diagram of the box body in Example 2. FIG.

Among them, 1 is the box body, 2 is the carrier glass, 3 is the function curve card, 4 is the light box, 5 is the opening, 6 is the substrate, 7 is the transparent glass body, 8 is the fixed suction soft film, 9 is the first A handle, 10 is a second handle, 11 is a control switch, 12 is a groove, and 13 is a drawer.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention. The technical solutions of the present utility model will be described in detail below with reference to the embodiments and the accompanying drawings, but the protection scope is not limited by this.

Example 1

As shown in Figure 1-5, a function curve comparison demonstration teaching aid includes a box body 1, a carrier glass 2 and a plurality of function curve cards 3. The lower part of the box body 1 is connected with a light box 4, and the upper surface of the light box 4 is connected to the box body. 1. The bottom surface is integrally arranged, the light box is provided with an LED illuminant, a power supply and a connection circuit, and the outer surface of the light box 4 is provided with a control switch 11. The light box 4 is a conventional arrangement, and the circuit components therein are conventional circuits, and the LED light-emitting lamp body, the control switch 11 and the power supply are connected in series, in order to enhance the display effect.

The front of the box body 1 is made of transparent resin glass, which is used as a display surface. The top of the box body 1 is provided with an opening 5, the two sides of the box body 1 are opaque plates, and the top of the box body 1 is away from the side of the transparent display surface. A plurality of substrate openings are provided, and substrates 6 of different colors are respectively inserted into the substrate openings, and a plurality of spare multi-color substrates 6 are inserted into the rear of the box body. The carrying glass slide 2 is placed upright in the box body 1 through the opening 5 provided on the top; the carrying glass slide 2 includes a transparent glass slide body 7 and a fixed suction soft film 8, and the fixed suction soft film 8 is also made of transparent resin material, thin in quality , which can be closely attached to the transparent glass slide body 7 . The two sides of the transparent glass slide body 7 are respectively connected with a fixed suction soft film 8, and the side edge of the fixed suction soft film 8 is bonded with the side edge of the transparent glass slide body 7; The hand 9 is provided with a second handle 10 on the top of the carrying glass slide 2, which is convenient for taking the carrying glass slide; the function curve card 3 is a transparent PVC material card body and a function curve is drawn on the transparent card body.

In specific use, place the drawn two function curve cards 3 to be compared on both sides of the transparent glass slide body 7, and then cover the fixed suction soft film 8 on the top of the function curve card 3 to fix it; When the function curve card 3, the coordinate axes of the two function curves are coincident; then the carrier glass 2 on which the function curve card 3 is placed is inserted into the box body 1 from the opening 5 at the top of the box body 1, and the width of the opening 5 is set to slightly It is larger than the width of the carrier glass 2, so that it can be placed upright without falling. Choose a color with a sharp contrast with the function curve as the main color of the substrate. According to the color of the function curve, you can choose a contrasting substrate 6, It is placed on a layer that is close to the carrier slide 2 for a more prominent foil curve, making it easier to observe. Open the light box 4 at the bottom, and you can compare and observe the function curve.

Example 2

As shown in FIG. 6 , the structure is the same as that of Embodiment 1, the difference is that a drawer 13 is connected to the lower part of the light box 4 for placing a plurality of function curve cards 3 . This structure enables the demonstration teaching aid to have the function of storage at the same time, and the cards of the commonly used function curve can be prepared and stored in the drawer 13 for standby use. A groove 12 is provided on the bottom surface of the box body, and the carrier glass 2 enters the box body 1 through the opening 5 at the top of the box body 1 and is placed in the groove 12 for positioning. The groove 12 at the bottom can position the carrier glass 2 to prevent the carrier glass 2 from being cut obliquely, so as to facilitate the observation of the displayed function curve.

The above content is a further detailed description of the present invention in conjunction with the specific preferred embodiments, and it cannot be considered that the specific embodiments of the present invention are limited to this. Under the premise of a utility model, some simple deductions or substitutions can also be made, which should be regarded as belonging to the utility model and the scope of patent protection determined by the submitted claims.

Claims (7)

1. a function curve contrast demonstration teaching aid, it is characterized in that, comprise box body, bearing glass and multiple function curve cards, the lower part of described box body is connected with a light box, and the front side of described box body is a transparent display surface, so The top of the box body is provided with an opening, the two sides of the box body are light-tight plates, and the back of the box body is provided with a substrate; the carrier glass is placed upright in the box body through the opening provided at the top ; Described bearing glass comprises transparent glass slide body and fixed suction soft film, two sides of described transparent glass slide body are respectively connected with a fixed suction soft film, and the side of said fixed suction soft film is connected with The sides of the transparent glass slide body are connected; the height of the carrying glass slide is greater than the height of the box body; the function curve card is a transparent card body and a function curve is drawn on the transparent card body. 2 . The function curve comparison demonstration teaching aid according to claim 1 , wherein a drawer is connected to the lower part of the light box for placing a plurality of function curve cards. 3 . 3. a kind of function curve contrast demonstration teaching aid according to claim 1, is characterized in that, described box body bottom surface is provided with groove, described carrying glass slide enters box body through the opening of box body top and is placed Used for positioning in grooves. 4. A function curve contrast demonstration teaching aid according to claim 1, wherein a side of the top of the box body away from the transparent display surface is provided with a plurality of substrate openings, and a plurality of substrate openings are arranged in the substrate openings. Substrates of different colors are inserted respectively. 5. A function curve comparison demonstration teaching aid according to claim 1, wherein the upper surface of the light box and the bottom surface of the box body are integrally arranged, and an LED illuminant, a power supply and a connection circuit are arranged in the light box, and the The outer surface of the light box is provided with a switch control device. 6 . The function curve comparison demonstration teaching aid according to claim 1 , wherein a first handle is provided on the upper surface of the box body, and a second handle is provided on the top of the carrier glass. 7 . 7 . The function curve comparison demonstration teaching aid according to claim 1 , wherein a reference cross is drawn in the center of the transparent glass slide body. 8 .

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