CN2072710U

CN2072710U - Multi-purpose combined solid geometry teaching aid

Info

Publication number: CN2072710U
Application number: CN 90215958
Authority: CN
Inventors: 吴俊廷
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-05
Filing date: 1990-10-05
Publication date: 1991-03-06

Abstract

The utility model discloses a multi-purpose combined solid geometry teaching aid, comprising a plurality of metal or plastic rods, plates, frames, balls and telescopic bands. The utility model can satisfy the requirements of teaching the solid geometry in secondary schools. The utility model can be assembled into solid geometry models of various colors and shapes. The assembled models can discretionarily rotate and incline backwards and forwards or left and right, can make student watch the demonstration of the teaching aid at a different angle of the class, and can make student comprehend and erect the space concept and exert the imaginative power and the creativity to achieve the purpose of improving the teaching quality. The utility model has the advantages of light weight, low cost, portability, favorable all-pervading use, etc.

Description

Multi-purpose combined solid geometry teaching aid

The utility model relates to a kind of teaching aid, particularly a kind of multipurpose combined solid geometry teaching aid.

At present, the teaching aid that uses in the solid geometry teaching of middle school mostly is traditional teaching aid greatly, and almost each solid has a model, and not only cost height, purposes are single, inconvenience is carried, and are difficult for making the student to establish space, can not satisfy the needs of learning aid." the assemblied stereo several teaching demonstrating model " of No. 87200950 patent disclosures is though can address the above problem effectively, but the whole models that can't form solid geometry, particularly form the face of solid geometric pattern and the graph of a relation between the face, the condition of representative face is not enough, and quite a few geometric figure can't be demonstrated.In addition, the solid geometry body of forming on platen can not rotate, and can not tilt, and can not satisfy school on the classroom and watch the requirement of solid geometry teaching model demonstration from different angles, is limited in teaching practice is used.

The purpose of this utility model, be to provide a kind of in light weight, volume is little, cost is low, be easy to carry, the convenient use, the energy Rapid Combination becomes the various visual models of solid geometry, make the student produce space imagination, establish three-dimensional idea, strengthen the multipurpose combined solid geometry teaching aid of thinking creativity, to alleviate the financial burden of school's purchase teaching aid, the problem that solve the difficult religion of solid geometry, finds it difficult to learn, the quality of instruction of raising solid geometry.

The utility model is the ultimate principle according to " the point is moved into a line; line moves into face; face moves adult ", the teaching aid that utilizes parts such as line (band), bar, plate, frame, circle, ball to form, and is furnished with different colors, the solid geometric pattern that is assembled into and the color of plate figure are checked one against another, reach the purpose of setting up concept of space, simultaneously, the solid geometric pattern that is assembled into can rotate arbitrarily and tilts forward and back up and down with bearing plate, therefore, can make the student on the classroom watch the teaching aid demonstration from each different angle.

The utility model is shown in Fig. 1-2 4, and it bears plate teaching aid case lid (1) the teaching aid casing (2) of holding concurrently by figure, cramp bar (9), metal or plastic bar (10), metal expansion link (15) rubber telescopic band (17), rectangular planes plate (11,14), triangular planar panel (20,22,21,23), rectangle frame (19), size square-shaped frame (24,26), triangle frame (25) pentagon frame (27), hexagon frame (28), netted surface plate (29), metal or plastic ring (31), ball (32), fan-shaped transparent film (33), rectangle transparent film compositions such as (34).Have the groove (6) that equates with the thickness that bears plate (1) on the teaching aid casing (2), can insert formation teaching aid case bearing plate (1) upset.Teaching aid case inner-use clapboard (4) is separated into two parts, is used for placing shaft-like teaching aid and tabular teaching aid and frame, round teaching aid parts respectively; Dividing plate (4) is provided with the hole (pipe) of fixed installation cramp bar (9) or center, the back side that circle (5), figure bear plate (1) is provided with a universal round hole groove (8), it is cooperated with bulb on the cramp bar (9), rotation and rotation arbitrarily up and down, available screw rod is regulated elasticity, when not using, cramp bar (9) is contained in the little frame of teaching aid case.Big roundlet and various polygon geometric scheme are carved with in the front that figure bears plate (1), and are depicted as various color to distinguish different figures; All have the non-through hole (3) (stepped hole) of matching in the corner of various figures,, constitute the various models of solid geometry by the different cooperations of different holes, figure with various parts with metal expansion link (15) and inserted link (30).The lower end of metal expansion link (15) be by universal joint connect and with bear plate (1) on to become movingly right cylinder plug, metal expansion link (15) be that three joints are telescopic in hole (3), its upper end is provided with circle, and ((16), lower end are provided with hook (18); The two ends of rubber telescopic band (17) are respectively equipped with small circle and hook; The center of rectangle trough of belt surface plate (11) has a circular hole (7), has on it and is movably installed with two equidistant rotation circles (16) between two long deep trouths (36) and three equidistant shallow slot mouths (12), three shallow slots (12); Triangular planar panel (20) is for having the red equilateral triangle of shallow slot (12) on the angle; Triangular planar panel (21) has circle (16) for drift angle, and there is the different isosceles triangle of shallow slot (12) tow sides color at the base angle; Triangular planar panel (22) has shallow slot (12) for drift angle, and there is the isosceles triangle of circle (16) at the base angle; Triangular planar panel (23) is for there being the green equilateral triangle of circular hole (7) on the angle.All have circular hole (7) on the angle of shaped as frame assembly (19,24,25,26,27,28); An angle of netted surface plate (29) is provided with circle (16), and its excess-three angle is provided with inserted link (30); Metal or plastic ring (31) are each one of identical red, yellow, the green three look broken ring of diameter; The both sides of transparent film (33,34) are respectively equipped with the male and female nylon adherent buckle (35) that cooperatively interacts.Various plates, frame all adopt organic glass or plastics to make.

Below in conjunction with accompanying drawing assembling demonstration of the present utility model is further described:

With reference to accompanying drawing 1-4, bulb on the cramp bar (9) is inserted figure to bear in the universal round hole (8) at plate (1) back side, and adjusting screw(rod) tightened, and then the other end of cramp bar (9) is injected hole (pipe) (5) internal fixation on the teaching aid separator for container (4).Like this, just, can demonstrate various geometrical bodies in the front that figure bears plate (1).The various geometrical bodies of being formed can bear plate (1) rotation and rotation inclination arbitrarily on the bulb of cramp bar (9) with figure.

Figure 25-27 is the synoptic diagram of three fundamental propertys in the utility model demonstration plane.Metallic rod (10) yaw that two ends is with rubber ring (13) is on figure bears any straight line on the plate (1), can demonstrate " point of two on the straight line (A, B) is in a plane, and all points on this straight line are all in this plane so " like this.

Take off Metallic rod (10), a long rabbet (36) of rectangle double flute surface plate (11) is sticked in the long rabbet (36) of single groove surface plate (14), like this, can demonstrate " there is a common point (P) on two planes, and they have and have only a common linear by this point so ".

Being inserted in figure with three metal expansion links (15) bears in any three stepped holes (3) of square pattern of plate (1), a Metallic rod (10) of not overlapping rubber ring (13) is pierced in two circles (16) of double flute surface plate (11), again the two ends of Metallic rod (10) are packed in the upper end circle (16) of the two metal expansion links in both sides (15), another root expansion link (15) holds up the bottom left comer of double flute surface plate (11) and is surface level, can demonstrate like this " the process straight line (A; B), have and have only a plane with outer a bit (C) of this straight line ".

Figure 28 is the synoptic diagram of two parallel lines on plane of the utility model demonstration.On the basis of Figure 27, in addition being inserted in figure with a metal expansion link (15) bears on the empty right corner hole (3) of square of plate (1), hold up the empty right back angle of rectangle double flute surface plate (11), pierce in the circle cover (16) on next two two metal expansion links (15) that holding in the palm double flute surface plate (11) with a Metallic rod (10) of not overlapping rubber ring (13) then and get final product.

Figure 29 is the utility model demonstration straight line and the mutually perpendicular demonstration synoptic diagram in plane.Being inserted in figure with a metal expansion link (15) bears in the hole (3) on the plate (1), again the center pit (7) of rectangle double flute surface plate (11) is penetrated metalloid expansion link (15), make on its first segment step that just is carried on metal expansion link (15) to get final product.

Figure 30 is the teaching aid demonstration graph of the utility model demonstration " straight line is all vertical with two straight lines in the plane, and this straight line is perpendicular to this plane so ".On the basis of Figure 29, pack into the upper end of metal expansion link (15) with three circles (16) of three telescopic band (17) one ends, the other end is then hung three hooks in the hook (18) of metal expansion link (15) bottom through three shallow slot mouths (12) of double flute surface plate (11) respectively, and with an end more together with rubber ring (13) bundle with three Metallic rod (10), prick again on the intersection point right angle of metal expansion link (15) and double flute surface plate (11), the other end separately with the shallow slot mouth (12) that is stuck in double flute surface plate (11) in telescopic band (17) tighten, can demonstrate confirming the straight line theorem vertical like this with the plane.

Figure 31 forms cornerwise demonstration synoptic diagram of rectangular parallelepiped for the utility model demonstration.The four jiaos of circular holes (3) that bear plate (1) rectangle pattern at figure are gone up on the step that is inserted in and is stuck in metal expansion link (15) upper end in the hole (7) of inserting (19) four jiaos of four metal expansion links (15) rectangle frames, use a telescopic band (17) to twine a circle rectangularity limit at the middle part of metal expansion link (15) again, in addition the past again frontal plane in the lower left corner of moving the back to from the upper right corner of front with a telescopic band (17) is pulled to front lower right corner, can demonstrate " quadratic sum that square equals the length of three ribs on the summit of a diagonal angle line length of rectangular parallelepiped " like this.If the employing square pattern changes rectangle frame (19) into square-shaped frame (24) just can form cornerwise demonstration teaching aid of square.

Figure 32,33,34 forms the teaching aid demonstration graph that triangular prism is divided into three triangular pyramids for the utility model.In bearing the angle circular hole (3) of the triangle pattern on the plate (1), figure plugs three metal expansion links (15), three holes (7) of triangular planar panel (23) are enclosed within on the first segment step of metal expansion link (15) (or with three notch limit pads of triangular planar panel (20) on the first segment step of metal expansion link (15)), with the two sides respectively is that different colours isosceles triangle (21) base angle notch (12) fork is located on the metal expansion link (15) at the anterior angle and the right back angle of triangular planar panel (23) (or triangular planar panel (20)), and the circle of drift angle (16) is enclosed within the top of the metal expansion link (15) on right back limit; The drift angle notch (12) that with the two sides respectively is the isosceles triangle surface plate (22) of different colours is again pitched on the forward lower comer that metal expansion link (15) and triangular planar panel (23) (or triangular planar panel (20)) intersect, and then triangle projective planum frame (25) (or triangular planar panel (23)) is enclosed within the top of metal expansion link (15).But just the demonstration teaching aid triangular prism with cut apart (color differentiating) and become three triangular pyramids.

Figure 35-37 has described the teaching aid that the utility model is formed pyramid, terrace with edge.Four metal expansion links (15) are inserted in figure to bear on the circular hole (3) of quadrangle patterns of plate (1), the circle (16) on metal expansion link (15) top bound together just formed rectangular pyramid, triangular pyramid can be formed with three expansion links (15), hexagonal pyramid can be formed with six roots of sensation metal expansion link (15).The metal expansion link (15) of three-hexagonal pyramid is shortened some tops separately put circular hole (7) on the angle triangle frame (25)-hexagon frame (28), just can be assembled into three-six terrace with edges.

Figure 38 has described the teaching aid of the utility model composition dihedral angle.Will be about two netted surface plates (29) butt joint, the inserted link of bottom (30) is inserted in figure and bears in the circular hole (3) on the plate (1), the inserted link on a top (30) injects in the circle (16) on another piece top, so just constitutes dihedral angle.Increase by three-six again and combine, can form three-six prismatic teaching aids.

Figure 39 has described the teaching aid of the utility model composition ball.With (31) three of red, yellow, green three non-ferrous metal or plastics broken rings, wherein two become 45 degree to intersect to put into to make in the another circle (31) each opening part only with the contact point of another on get final product.

Figure 40 has described the utility model ball and the tangent teaching aid of face.Figure bears a balloon that blows up gas (32) on the plate (1), formed the teaching aid that ball and plane have only a common point like this.

Crowding around with fan-shaped transparent film (32) shown in Figure 21, make sticking being associated in together of male and female nylon buckles at radius edge, be installed in figure and bear in the corresponding circular trough of plate (1), is three-dimensional circular cone teaching aid.

Rectangle transparent film (34) one-tenth cylinder solid capable of being combined as stated above teaching aid with Figure 24.If this cylinder is installed in the circular cone of forming with Figure 21, just constituted the three-dimensional teaching aid of inscribed circle post of circular cone.

In a word, by combination, the variation of above-mentioned figure and method, just can be assembled into whole models of middle school solid geometry.

Claims

1, a kind of by case, ball, band, frame, plate, the multipurpose combined solid geometry teaching aid that bar is combined into, its feature bears plate [1] in being furnished with a figure that is carved with multiple geometric scheme and distinguishes with different colours again, a cramp bar [9] that has universal ball end, six roots of sensation top is provided with circle [16], the bottom is provided with the universal metal expansion link of three-section type [15] of hook [18], four metal or plastic bars [10] that are with rubber ring [13], five two ends are respectively equipped with the rubber telescopic band [17] of circle and hook, also is furnished with rectangle trough of belt surface plate [11,14] each one, the red equilateral triangle surface plate [20] that open slot [12] is arranged on the angle, the green equilateral triangle surface plate [23] that circular hole [7] is arranged on the angle, it respectively is the isosceles triangle surface plate [21] of different colours that drift angle has circle [16] two base angles that the tow sides of open slot [12] are arranged, drift angle is that open slot [12] two base angles are that the tow sides of circle [16] are each one of the isosceles triangle surface plate [22] of different colours, the angle is provided with the big or small square-shaped frame [24 of circular hole [7], 26], rectangle frame [19], triangle frame [25] pentagon frame [27], each one of hexagon frame [28], have [29] six of the metal of inserted link [30] and circle [16] or the netted surface plates of plastics, each one of red yellowish green trichromatism opening metal that diameter is identical or plastic ring [31], the right and left is respectively the fan-shaped transparent film [33] of male and female nylon buckles [35], each one of rectangle transparent film [34].

2, multipurpose combined solid geometry teaching aid according to claim 1 is characterized in that cramp bar (9) upper end is provided with universal ball head, can insert in the universal ball end circle hole (8) that figure bears plate (1) back side; Figure bears plate (1) and the model that is assembled into can be around bulb rotation and all around rotate arbitrarily.

3, multipurpose combined solid geometry teaching aid according to claim 1 and 2 is characterized in that front that figure bears plate (1) is painted to be carved with big roundlet and multiple geometric scheme, all has the non-through circular hole of step (3) on each angle of pattern; The back side is provided with the universal ball end circle hole (8) of mounting support bar (9).

4, multipurpose combined solid geometry teaching aid according to claim 1, it is characterized in that having on the rectangle trough of belt surface plate (11) two long deep trouths (36) and three equidistant shallow slot mouths (12), article three, be movably installed with two equidistant rotation circles (16) between the shallow slot mouth (12), the center of rectangle trough of belt surface plate (11) is provided with circular hole (7).

5, multipurpose combined solid geometry teaching aid according to claim 1 and 2 is characterized in that the lower end of cramp bar (9) can insert circle hole (5) internal fixation of teaching aid separator for container (4).