CN2035905U - Teaching aid for displaying line and image of trigonometric functions - Google Patents
Teaching aid for displaying line and image of trigonometric functions Download PDFInfo
- Publication number
- CN2035905U CN2035905U CN 88214324 CN88214324U CN2035905U CN 2035905 U CN2035905 U CN 2035905U CN 88214324 CN88214324 CN 88214324 CN 88214324 U CN88214324 U CN 88214324U CN 2035905 U CN2035905 U CN 2035905U
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- printing opacity
- circle
- teaching aid
- image
- slide plate
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Abstract
The utility model discloses a teaching aid for displaying line and image of trigonometric functions, which is composed of the line of the trigonometric functions, an image, a transmission and a circuit. The radius lamp strip which is arranged on the display window of a driving plate is connected with an endpoint contact strip and a center of circle contact strip; the four quadrants of a transparent circle are lengthways distributed with sine display strips; the circular display window is interior contacted with the transparent circle, and the diameter of the circular display window is one-half of diameter of the transparent circle; the transparent sections of the tangent and the cotangent are respectively lengthways and widthwise contacted with the transparent circle; a gleithretter is connected with a gleithretter axis; the whole image of the sine and the cosine are arranged in a sealing room. The teaching aid for displaying line and image of trigonometric functions uses the continuous active graphics to replace the manual plotting and is an ideal teaching aid for the course of trigonometric functions.
Description
The utility model relates to a kind of teaching aid that can show trigonometric function line and image, particularly constantly shows the teaching aid of trigonometric function line and visual curvilinear motion relation in dynamically.
The teacher will lecture the character of any angle trigonometric function now, often will utilize the variation of unit circle intermediate cam function line, makes the student grasp its Changing Pattern.The speaker usually be on blackboard, draw circle, radius, just, the cosine line segment, and then the sine that draws respectively, the situation of change of cosine line segment in all quadrants, though the picture method is better than simple preach, but still exist many shortcomings: the every generation of trigonometric function line once changes will draw once figure, waste time and energy; Because figure is static, lack continuity, the Changing Pattern of the student being grasped trigonometric function line and image inspires power not strong, influences efficiency of teaching.
The purpose of this utility model is for overcoming a kind of novel structure that above-mentioned shortcoming designs, and is easy and simple to handle and can show the teaching aid of trigonometric function line and visual variation relation continuously in dynamically.
The utility model is by the shading display screen, driving disc spacing pressing, radius lamp bar, the colorful light-permeable section, sinusoidal show bar, leading role's function line display part that disc shaft etc. constitute, by transparent display board, slide plate, the slide plate axle, the image light transmission piece, just, the cosine full figure resembles, trigonometric function image display part and circuit part that sealing chamber constitutes, the driving section branch is formed, it is characterized in that placing that the circular display window of driving disc spacing pressing is fixed with radius lamp bar on the disc shaft, the center of circle contact that is connected with the end points contact on the radius lamp bar and joins with disc shaft, the printing opacity number axis is divided into four quadrants with the printing opacity circle, the sinusoidal show bar that has contact in each quadrant is vertical distribution, circular display window and the round inscribe mutually of printing opacity, its diameter is 1/2nd of a printing opacity circle, and tangent printing opacity section and cotangent printing opacity section are vertical with the printing opacity circle respectively, laterally tangent; The slide plate that has the printing opacity curve is connected on the slide plate axle, and sinusoidal full figure resembles and the cosine full figure resembles and places sealing chamber respectively.
Reaching specific embodiments below with reference to the accompanying drawings is described further the utility model.
Fig. 1 is the synoptic diagram that trigonometric function line and image show teaching aid
Fig. 2 be along A-A ' to cut-away view
Fig. 3 be along B-B ' to cut-away view
Fig. 4 is the dynamic schematic diagram of trigonometric function line display part
Fig. 5 is a visual light transmission piece synoptic diagram in the trigonometric function image display part
Fig. 6 is a slide plate synoptic diagram in the trigonometric function image display part
Remove shown driving disc spacing pressing position with reference to Fig. 1, Fig. 2, Fig. 3, shading display screen (1), all the other positions hide with light screening material (32).Running part is connected with driving disc spacing pressing, and transmission gear (28) links to each other with driving handle (29), and and driving disc spacing pressing (2) be meshed; Disc shaft (3) passes driving disc spacing pressing (2) center of circle and is fixed on B-B ' layer, disc shaft (3) is done positive pole, be enclosed within negative plate (23) on the disc shaft with anodal with the female isolation of insulation axle and be fixed on driving disc spacing pressing (2) position, the center of circle, the positive and negative the two poles of the earth that are connected with power switch (25) and miniature transformer (27) also are connected on respectively on disc shaft and the negative plate.One circular display window (5) is arranged on the driving disc spacing pressing, be fixed with radius lamp bar (4) in the display window, the center of circle contact (7) that is connected with end points contact (6) on the radius lamp bar and joins with disc shaft, the zero line contact (24) that links to each other on position, the driving disc spacing pressing center of circle and the radius lamp bar (4), this contact is gone up at negative plate (23) and is slided; Radius lamp bar (4) can be embedded in the circular display window or be fixed on diameter surface, in shown printing opacity circle (8) scope of driving disc spacing pressing, other position except that circular display window and printing opacity number axis (9) all uses light screening material (32) to hide.The colorful light-permeable section comprises printing opacity circle, printing opacity number axis, tangent, cotangent printing opacity section, printing opacity number axis (9) is divided into four quadrants with printing opacity circle (8), several sinusoidal show bars (10) are arranged in each quadrant, show bar is vertical distribution, its two ends are connected with show bar contact (11), tangent printing opacity section (12) is vertically tangent with the printing opacity circle, and cotangent printing opacity section (13) is laterally tangent with the printing opacity circle.
See Fig. 1 and Fig. 5, slide plate (14) is on slide plate axle (15), on the image light transmission piece (16) sine, cosine, tangent, the cotangent printing opacity curve that is staggered in together arranged, every the printing opacity curve overlaps with corresponding printing opacity curve on the slide plate respectively, the same side of five points and printing opacity transverse axis or the lampion bar of line segment such as overlap on every printing opacity curve on the slide plate are so that be figure with 5.Printing opacity transverse axis (20) is perpendicular with the slip longitudinal axis (21), the slip longitudinal axis (21) makes it mobile by adjusting knob (31), with the printing opacity transverse axis is equidistant and parallel two light transmission strips (22) are arranged, cotangent printing opacity section (13) conllinear in a light transmission strip and the trigonometric function line display part wherein, transverse axis conllinear in printing opacity transverse axis (20) and the printing opacity number axis (9), sinusoidal full figure resemble (18) and cosine full figure and resemble (19) sealing chamber (17) after placing shading display screen (1) respectively.
Colorful light-permeable section, sinusoidal show bar, lampion bar can adopt light emitting diode, small lamp bulb, colored hair mating plate or other luminescent material to do light emitting source, and light screening material (32) can be light-shielding sheet, anti-dazzling screen etc.After the slide plate at B-B ' layer rear portion, light transmission piece and in the sealing chamber (17) emitting bulb (26) is housed respectively, the teaching aid casing can make collapsible with folding (30), so that carry.
Operation of the present utility model and procedure for displaying: 1. trigonometric function line display part: turn on the power switch, make the printing opacity circle on the screen, printing opacity number axis and radius lamp bar are shinny, at this moment start driving handle, through transmission gear driving disc spacing pressing is rotated, end points contact on the radius lamp bar is along with the contact on the sinusoidal show bar in driving disc spacing pressing motion and this position links to each other, make this sine show bar shinny, because the end points contact joins at diverse location and sinusoidal show bar contact respectively, make sinusoidal show bar at 0 °～180 °, automatic shutter between 180 °～360 °, always present on screen is the needed right-angle triangle of teaching.When the contact on the driving disc spacing pressing respectively with tangent, cotangent printing opacity section on lamp bar contact when joining, tangent and cotangent printing opacity section are shinny.2. trigonometric function image display part: the knob on the turn slide plate axle, slide plate is moved, every printing opacity curve on the slide plate successively overlaps with corresponding printing opacity curve in the visual light transmission piece, also can show five points of mapping before coincidence.Can press the sealing chamber power switch according to the teaching needs, sinusoidal full figure be resembled or the cosine full figure resembles appearance.Stir adjusting knob and can make the left and right sides translation of the slip longitudinal axis,, should be threaded to the left side to the slip longitudinal axis, when tangent, when cotangent printing opacity curve occurs, in the middle of should being threaded to the slip longitudinal axis when sine, when cosine printing opacity curve occurs.
The utility model is with continuous motion graphics, replaced in the past manual plotting, not only intuitively, but also save time, can see continuously the overall process of trigonometric function line and visual variation relation, having improved the visuality of teaching and storage property, is for the desirable teaching aid of lecturing senior middle school's trigonometric function.
Claims (6)
1, trigonometric function line and image show teaching aid, be by the printing opacity display screen, driving disc spacing pressing, radius lamp bar, the colorful light-permeable section, sinusoidal show bar, the trigonometric function line display part that disc shaft etc. constitute, by transparent display board, slide plate, the slide plate axle, the image light transmission piece, just, the cosine full figure resembles, trigonometric function image display part and circuit part that sealing chamber constitutes, the driving section branch is formed, it is characterized in that the circular display window (5) that places disc shaft (3) to go up driving disc spacing pressing (2) is fixed with radius lamp bar (4), the center of circle contact (7) that is connected with end points contact (6) on the radius lamp bar and joins with disc shaft, printing opacity number axis (9) is divided into four quadrants with printing opacity circle (8), the sinusoidal show bar (10) that has contact (11) in each quadrant is vertical distribution, circular display window and the round inscribe mutually of printing opacity, its diameter is 1/2nd of a printing opacity circle, and tangent printing opacity section (12) and cotangent printing opacity section (13) are vertical with printing opacity circle (8) respectively, laterally tangent; The slide plate (14) that has the printing opacity curve is connected on the slide plate axle (15), and sinusoidal full figure resembles (18) and cosine full figure and resembles (19) and place sealing chamber (17) respectively.
2, according to the described demonstration teaching aid of claim 1, it is characterized in that running part is connected with driving disc spacing pressing (2), in the shown printing opacity circle scope of driving disc spacing pressing, other position except that circular display window and printing opacity number axis (9) hides with light screening material.
3, according to claim 1 or 2 described demonstration teaching aids, it is characterized in that circuit part comprises power switch (25), miniature transformer (27), emitting bulb (26), positive and negative electrode, zero line contact (24), the positive and negative polarities that are connected with power switch are connected on respectively on disc shaft (3) and the negative plate (23), are connected a zero line contact of sliding on position, the driving disc spacing pressing center of circle and the radius lamp bar on negative plate.
4, according to the described demonstration teaching aid of claim 3, it is characterized in that the printing opacity transverse axis (20) in the trigonometric function image display part is perpendicular with the slip longitudinal axis (21), with the printing opacity transverse axis is equidistant and parallel two light transmission strips are arranged, transverse axis conllinear in cotangent printing opacity section (13) conllinear in a light transmission strip (22) and the trigonometric function line display part wherein, printing opacity transverse axis (20) and printing opacity number axis (9).
5, according to the described demonstration teaching aid of claim 1, it is characterized in that having on the visual light transmission piece (16) sine that is staggered in together, cosine, tangent, cotangent printing opacity curve and overlap, the same side of five points and printing opacity transverse axis or the lampion bar of line segment such as overlap on every printing opacity curve on the slide plate with corresponding printing opacity curve on the slide plate.
6, according to claim 1 or 2 described demonstration teaching aids, it is characterized in that said colorful light-permeable section, sinusoidal show bar, lampion bar can adopt light emitting diode, small lamp bulb, colored hair mating plate or other luminescent material to do light emitting source, light screening material (32) can be light-shielding sheet, anti-dazzling screen etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214324 CN2035905U (en) | 1988-09-23 | 1988-09-23 | Teaching aid for displaying line and image of trigonometric functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214324 CN2035905U (en) | 1988-09-23 | 1988-09-23 | Teaching aid for displaying line and image of trigonometric functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2035905U true CN2035905U (en) | 1989-04-12 |
Family
ID=4847283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88214324 Withdrawn CN2035905U (en) | 1988-09-23 | 1988-09-23 | Teaching aid for displaying line and image of trigonometric functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2035905U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167126A (en) * | 2014-07-09 | 2014-11-26 | 孔震 | Sine function image generation demonstration device and demonstration method |
| CN104361789A (en) * | 2014-11-25 | 2015-02-18 | 南京工业职业技术学院 | All-round trigonometric function demonstrating and shape drawing instrument |
| CN110517563A (en) * | 2019-08-14 | 2019-11-29 | 武汉光驰教育科技股份有限公司 | Interactive trigonometric function instructional device and method |
| WO2020227840A1 (en) * | 2019-05-10 | 2020-11-19 | Universidad Del Desarrollo | Device for teaching |
-
1988
- 1988-09-23 CN CN 88214324 patent/CN2035905U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167126A (en) * | 2014-07-09 | 2014-11-26 | 孔震 | Sine function image generation demonstration device and demonstration method |
| CN104361789A (en) * | 2014-11-25 | 2015-02-18 | 南京工业职业技术学院 | All-round trigonometric function demonstrating and shape drawing instrument |
| WO2020227840A1 (en) * | 2019-05-10 | 2020-11-19 | Universidad Del Desarrollo | Device for teaching |
| CN110517563A (en) * | 2019-08-14 | 2019-11-29 | 武汉光驰教育科技股份有限公司 | Interactive trigonometric function instructional device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |