CN105150725A - Multifunctional teaching aid for math class - Google Patents

Multifunctional teaching aid for math class Download PDF

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Publication number
CN105150725A
CN105150725A CN201510603538.6A CN201510603538A CN105150725A CN 105150725 A CN105150725 A CN 105150725A CN 201510603538 A CN201510603538 A CN 201510603538A CN 105150725 A CN105150725 A CN 105150725A
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CN
China
Prior art keywords
circular
tape measure
secondary chi
teaching aid
pointer
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Pending
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CN201510603538.6A
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Chinese (zh)
Inventor
赵泓钦
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赵泓钦
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Application filed by 赵泓钦 filed Critical 赵泓钦
Priority to CN201510603538.6A priority Critical patent/CN105150725A/en
Publication of CN105150725A publication Critical patent/CN105150725A/en
Pending legal-status Critical Current

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Abstract

The invention provides a multifunctional teaching aid for math class and relates to a teaching ruler. The multifunctional teaching aid mainly comprises a main ruler and an auxiliary ruler, wherein the top end of the main ruler is hinged with the top end of the auxiliary ruler, scale marks are engraved on the main ruler, a circular flexible rule center shaft is hinged to the bottom end of the main ruler, the bottom end of the auxiliary ruler is movably connected with a chalk sleeve, a circular handle is fixedly arranged at the bottom end of the auxiliary ruler, a small hanger is arranged on the inner side of the bottom end of the auxiliary ruler, the top end of the main ruler and the top end of the auxiliary ruler are also hinged with circular angle meters, and a pointer and a tightening knob are arranged on the center shaft of the circular angle meter. The multifunctional teaching aid is simple in structure, convenient to use and carry, and convenient for a teacher to teach, can be used for drawing a circle with any diameter and a sector with any angle, and can be used for measuring any included angle, thus improving the classroom teaching efficiency.

Description

A kind of multifunctional mathmatical class teaching aid
Technical field:
The present invention relates to teaching aid field, particularly relate to a kind of multifunctional mathmatical class teaching aid.
Background technology:
On mathematics class, the angle of drawing different angles is problems that teacher teaches or often runs in students' work, the teacher attended class time error of mapping is larger, be unfavorable for the understanding of student, can with traditional compasses in teacher draws angle on blackboard, this compasses are as easy as rolling off a log at blackboard slippery surface, use inconvenience, to draw the circle of different-diameter, need the straight line that on present blackboard, one, picture is the same with radius, draw circle again, draw also inconvenient, nowadays good education is that each child grows up important step, mathematical education is also particularly important, mathematics is except formula and other utilizations, the geometric expression of mathematics is also particularly important, particularly protractor and compasses, due to the reason of instrument itself, cause angulation and draw circle usually inaccurate, have a strong impact on quality of instruction like this, the expression of mathematics geometric meaning is restricted, be unfavorable for that student understands digestion.
Summary of the invention:
In order to solve the problem, the invention provides a kind of structure simple, easy to use, be easy to carry, arbitrary diameter circle, arbitrarily angled fan-shaped can be drawn, the angle of any angle can also be measured, be convenient to teacher's teaching, improve the technical scheme of classroom teaching efficiency:
A kind of multifunctional mathmatical class teaching aid, mainly comprise main scale, secondary chi, main scale top and secondary chi top hinged, main scale is carved with graduation mark, scale precision is 1cm, the hinged circular tape measure central shaft in main scale bottom, circular tape measure movable end is provided with perforate, secondary chi bottom is flexibly connected chalk sleeve, and secondary chi bottom is fixedly installed round handle, be provided with little hook inside secondary chi bottom, main scale top and secondary chi top be hinged circular angle meter also, and circular angle meter central shaft is provided with pointer and screws knob.
As preferably, the tape measure length of circular tape measure is 20cm-30cm.
As preferably, circular tape measure and circular angle meter shell are transparence, and the back side all arranges magnetic stripe.
As preferably, without graduation mark on secondary chi, and be provided with the catch of vertical secondary chi at secondary chi top position of center line.
As preferably, drawing circular method is:
A, the magnetic stripe at circular tape measure and the circular angle meter back side is adsorbed on rigidity blackboard;
B, slowly pulled out in circular bend tape casing by tape measure, circular tape measure central shaft is radius of a circle to be painted to the distance on top;
C, the perforate of circular tape measure movable end is enclosed within the little hook of secondary chi bottom;
D, proficiency catch round handle, with circular tape measure central shaft for initial point draws circle;
Any pull-out or shortening tape measure length, draw the circle of any radius by above-mentioned steps.
As preferably, drawing fan-shaped method is:
A, main scale vertically to be placed, and do two marks with chalk on blackboard, the magnetic stripe at circular tape measure and the circular angle meter back side is adsorbed on rigidity blackboard, and respective central point is aimed at two marks;
B, rotate circular angular surveying meter, make 0 ° of position alignment main scale center line;
C, stir pointer, the pointer top indication number of degrees are fan-shaped angle to be painted;
D, screw knob, circular angle meter and pointer are maintained static;
E, proficiency catch handle, with circular angle meter central point for initial point draws arc;
When F, secondary chi top catch and pointer are close to, complete camber line and draw;
G, camber line two ends to be connected with the mark at the circular angle meter back side respectively, to be the fan-shaped of required angle;
Stir pointer to any angular position, draw by above-mentioned steps fan-shaped at any angle.
Beneficial effect of the present invention is:
(1) structure of the present invention is simple, easy to use, is easy to carry, convenient teaching.
(2) the present invention only by adjusting the length of tape measure, need can draw the circle of arbitrary diameter.
(3) the present invention only need stir pointer, can draw fan-shaped at any angle.
(4) the present invention can also measure angle at any angle.
Accompanying drawing illustrates:
Fig. 1 is embodiments of the invention one front views;
Fig. 2 is embodiments of the invention two front views.
Detailed description of the invention:
For making goal of the invention of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
Embodiment one:
As shown in Figure 1, a kind of multifunctional mathmatical class teaching aid, mainly comprise main scale 1, secondary chi 2, main scale 1 top and secondary chi 2 top hinged, main scale 1 is carved with graduation mark 3, scale precision is 1cm, hinged circular tape measure 4 central shaft in main scale 1 bottom, circular tape measure 4 movable end is provided with perforate, and tape measure 41 length of circular tape measure 4 is 20cm-30cm.Secondary chi 2 bottom is flexibly connected chalk sleeve 5, and secondary chi 2 bottom is fixedly installed round handle 6, little hook 7 is provided with inside secondary chi 2 bottom, main scale 1 top and secondary chi 2 top be hinged circular angle meter 8 also, circular tape measure 4 and described circular angle meter 8 shell are transparence, and the back side all arranges magnetic stripe 11.
Drafting circular method is:
A, the magnetic stripe 11 at circular tape measure 4 and circular angle meter 8 back side is adsorbed on rigidity blackboard;
B, slowly pulled out in circular tape measure 4 shell by tape measure 41, circular tape measure 4 central shaft is radius of a circle to be painted to the distance on top;
C, the perforate of circular tape measure 4 movable end is enclosed within the little hook 7 of secondary chi 2 bottom;
D, proficiency catch round handle 6, with circular tape measure 4 central shaft for initial point draws circle;
Any pull-out or shortening tape measure length, draw the circle of any radius by above-mentioned steps.
Embodiment two:
As shown in Figure 2, a kind of multifunctional mathmatical class teaching aid, mainly comprise main scale 1, secondary chi 2, main scale 1 top and secondary chi 2 top hinged, hinged circular tape measure 4 central shaft in main scale 1 bottom, secondary chi 2 bottom is flexibly connected chalk sleeve 5, and secondary chi 2 bottom is fixedly installed round handle 6, main scale 1 top and secondary chi 2 top be hinged circular angle meter 8 also, without graduation mark on secondary chi 2, and is provided with the catch 12 of vertical secondary chi at secondary chi 2 top position of center line.Circular tape measure 4 and circular angle meter 8 shell are transparence, and the back side all arranges magnetic stripe 11, and circular angle meter 8 central shaft is provided with pointer 9 and screws knob 10.
Drawing fan-shaped method is:
A, main scale 1 vertically to be placed, and do two marks with chalk on blackboard, the magnetic stripe 11 at circular tape measure 4 and circular angle meter 8 back side is adsorbed on rigidity blackboard, and respective central point is aimed at two marks;
B, rotate circular angular surveying meter 8, make 0 ° of position alignment main scale 1 center line;
C, stir pointer 9, the pointer 9 top indication number of degrees are fan-shaped angle to be painted;
D, screw knob 10, circular angle meter 8 and pointer 9 are maintained static;
E, proficiency catch handle 6, with circular angle meter 8 central point for initial point draws arc;
When F, secondary chi 2 top catch 12 are close to pointer 9, complete camber line and draw;
G, camber line two ends to be connected with the mark at circular angle meter 8 back side respectively, to be the fan-shaped of required angle;
Stir pointer 9 to any angular position, draw by above-mentioned steps fan-shaped at any angle.
In addition, the angle of different angles can also be measured, the central point of circular angle meter 8 is aimed at the initial point of angle to be measured, main scale 1 center line is aimed at a limit of angle to be measured, stir till pointer 9 to pointer 9 overlaps with another limit of angle to be measured, the pointer indication number of degrees are the number of degrees of angle to be measured.
Beneficial effect of the present invention is: structure of the present invention is simple, easy to use, is easy to carry, convenient teaching, only by adjusting the length of tape measure, need can draw the circle of arbitrary diameter; Only need stir pointer, can draw fan-shaped at any angle; The present invention can also measure angle at any angle, is convenient to teacher's teaching, improves classroom teaching efficiency.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.

Claims (6)

1. a multifunctional mathmatical class teaching aid, it is characterized in that: mainly comprise main scale, secondary chi, described main scale top and described secondary chi top hinged, described main scale is carved with graduation mark, described scale precision is 1cm, the hinged circular tape measure central shaft in described main scale bottom, described circular tape measure movable end is provided with perforate, described secondary chi bottom is flexibly connected chalk sleeve, and described secondary chi bottom is fixedly installed round handle, little hook is provided with inside described secondary chi bottom, described main scale top and described secondary chi top also hinged circular angle meter, described circular angle meter central shaft is provided with pointer and screws knob.
2. a kind of multifunctional mathmatical class teaching aid according to claim 1, is characterized in that: the tape measure length of described circular tape measure is 20cm-30cm.
3. a kind of multifunctional mathmatical class teaching aid according to claim 1, is characterized in that: described circular tape measure and described circular angle meter shell are transparence, and the back side all arranges magnetic stripe.
4. a kind of multifunctional mathmatical class teaching aid according to claim 1, is characterized in that: without graduation mark on described secondary chi, and is provided with the catch of vertical secondary chi at secondary chi top position of center line.
5. a kind of multifunctional mathmatical class teaching aid according to claim 1, is characterized in that: drawing circular method is:
A, the magnetic stripe at circular tape measure and the circular angle meter back side is adsorbed on rigidity blackboard;
B, slowly pulled out in circular bend tape casing by tape measure, circular tape measure central shaft is radius of a circle to be painted to the distance on top;
C, the perforate of circular tape measure movable end is enclosed within the little hook of secondary chi bottom;
D, proficiency catch round handle, with circular tape measure central shaft for initial point draws circle;
Any pull-out or shortening tape measure length, draw the circle of any radius by above-mentioned steps.
6. a kind of multifunctional mathmatical class teaching aid according to claim 1, is characterized in that: drawing fan-shaped method is:
A, main scale vertically to be placed, and do two marks with chalk on blackboard, the magnetic stripe at circular tape measure and the circular angle meter back side is adsorbed on rigidity blackboard, and respective central point is aimed at two marks;
B, rotate circular angular surveying meter, make 0 ° of position alignment main scale center line;
C, stir pointer, the pointer top indication number of degrees are fan-shaped angle to be painted;
D, screw knob, circular angle meter and pointer are maintained static;
E, proficiency catch handle, with circular angle meter central point for initial point draws arc;
When F, secondary chi top catch and pointer are close to, complete camber line and draw;
G, camber line two ends to be connected with the mark at the circular angle meter back side respectively, to be the fan-shaped of required angle;
Stir pointer to any angular position, draw by above-mentioned steps fan-shaped at any angle.
CN201510603538.6A 2015-09-22 2015-09-22 Multifunctional teaching aid for math class Pending CN105150725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510603538.6A CN105150725A (en) 2015-09-22 2015-09-22 Multifunctional teaching aid for math class

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510603538.6A CN105150725A (en) 2015-09-22 2015-09-22 Multifunctional teaching aid for math class

Publications (1)

Publication Number Publication Date
CN105150725A true CN105150725A (en) 2015-12-16

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CN (1) CN105150725A (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2618776Y (en) * 2003-04-07 2004-06-02 杨琪 Multifunction compasses
US20050155234A1 (en) * 2004-01-21 2005-07-21 Kun-Li Xieh Protractor and ruler combination
CN201941418U (en) * 2010-12-15 2011-08-24 刘燕 Compasses with measuring tape
CN202046097U (en) * 2011-02-11 2011-11-23 周梦霞 Compasses with rule
CN202727756U (en) * 2012-06-29 2013-02-13 徐一维 Multipurpose teaching ruler
CN202965689U (en) * 2012-10-30 2013-06-05 大连民族学院 Compasses with scales
CN203974326U (en) * 2014-08-19 2014-12-03 丁百慧 A kind of novel bow compass
CN204136654U (en) * 2014-09-29 2015-02-04 华东交通大学理工学院 Multifunctional teaching device
CN204278857U (en) * 2014-12-02 2015-04-22 郭伟 A kind of Multifunctional math teaching aid
CN204322840U (en) * 2014-12-16 2015-05-13 燕山大学 Multifunctional ruler
CN204367698U (en) * 2015-01-14 2015-06-03 王新东 A kind of ruler combination tool
CN204472301U (en) * 2014-12-30 2015-07-15 邓婕妤 Be with graduated compasses

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2618776Y (en) * 2003-04-07 2004-06-02 杨琪 Multifunction compasses
US20050155234A1 (en) * 2004-01-21 2005-07-21 Kun-Li Xieh Protractor and ruler combination
CN201941418U (en) * 2010-12-15 2011-08-24 刘燕 Compasses with measuring tape
CN202046097U (en) * 2011-02-11 2011-11-23 周梦霞 Compasses with rule
CN202727756U (en) * 2012-06-29 2013-02-13 徐一维 Multipurpose teaching ruler
CN202965689U (en) * 2012-10-30 2013-06-05 大连民族学院 Compasses with scales
CN203974326U (en) * 2014-08-19 2014-12-03 丁百慧 A kind of novel bow compass
CN204136654U (en) * 2014-09-29 2015-02-04 华东交通大学理工学院 Multifunctional teaching device
CN204278857U (en) * 2014-12-02 2015-04-22 郭伟 A kind of Multifunctional math teaching aid
CN204322840U (en) * 2014-12-16 2015-05-13 燕山大学 Multifunctional ruler
CN204472301U (en) * 2014-12-30 2015-07-15 邓婕妤 Be with graduated compasses
CN204367698U (en) * 2015-01-14 2015-06-03 王新东 A kind of ruler combination tool

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Application publication date: 20151216

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