CN203282916U - Mathematics teaching tool - Google Patents

Abstract

The utility model relates to a mathematics teaching tool. The mathematics teaching tool is characterized in that a hollow index dial with angles is arranged in a base, guide rails are arranged on the inner circumference of the index dial in a sleeved mode, a ruler frame is arranged between the guide rails and penetrates through the center of the index dial, a rolling ruler is arranged on the ruler frame in a sleeved mode, one end of a soft steel ruler rolling ruler core is arranged on the rolling ruler, the soft steel ruler rolling ruler core is a soft steel ruler with graduations, and can rotate on the rolling ruler, and the other end portion of the soft steel ruler rolling ruler core is provided with a chalk clamping device. Thus, at utilization time, the ruler frame can rotate at 360 degrees in the guide rails and can draw straight lines or inclined lines at any angle, and the ruler frame is a telescopic ruler with graduations and can rotate on the rolling ruler so as to be capable of draw circles or circular arcs with any diameter. Consequently, the purpose that a teaching tool is used for conducting graph instruction directly in the mathematic teaching process so as to help students to understand and memorize in a more visual mode is achieved. The mathematic teaching tool is simple in structure, easy and convenient to operate, and capable of helping students to understand and memorize.

Description

Math teaching aid

Technical field

The utility model relates to a kind of educational aid technical field, a kind of math teaching aid.

Background technology

At present, the invention of compasses can trace back to the Chinese Xia dynasty the earliest, " Records of the Historian. Xia Benji " carry a Da Yu harness the river " left criterion, right rule ", in the inscriptions on bones or tortoise shells of B.C. the 15th century, existing rule, square two words, be called " rule ", i.e. the compasses of today at that time, " all gifts. examine work note. the artisan " record: " artisan founds the state; Yi, with outstanding, is put with outstanding in level land, depending on scape., for rule, know the scape and the scape that enters day of sunrise.The scape of all Japan and China of ginseng in daytime, the utmost point star of examining night, with positive morning and evening.”。In the military beam ancestral temple in Jiaxiang, Shandong, " Eastern Han Dynasty's Fuxi Chinese mythology goddess brick engraving picture " arranged, wherein Chinese mythology goddess is held rule, and Fuxi is held square, and the rule here are the palaiotype trammels, and shape is similar to the font in the inscriptions on bones or tortoise shells " last of the ten Heavenly stems ".Paint the drawing instrument of round use.Two pin are arranged, and upper end is hinged, and lower end can arbitrarily separate or close up, to adjust the size of the arc radius of being painted.The end of a pin is needle point, and the end of another pin can be packed into and be painted the pin of pencil line or the line of ink marker.Some compasses are loaded onto extension rod, can draw larger circle.Trammel, springer bow and the heart bow compasses etc. of living are arranged.

Compasses consist of nib, rotating shaft, compasses supporting leg, lattice chi, hinged joint, handwriting, nib, compasses point, microtia, the upper end that is connected to handwriting is inserted in the lower end of its nib, the lower end of the formation of handwriting compasses is threaded in the upper end of nib, the concordant end of microtia is welded in the middle of the outside of compasses supporting leg, and the lower end of compasses supporting leg clamps the upper end that is connected to the compasses point.

It is characterized in that: the one side of handwriting is pasted the one side that is connected to hinged joint, and the another side of hinged joint is pasted and is connected in the middle of an end of lattice chi, and the two ends that are connected to rotating shaft are inserted in the both sides, crack upper end of handwriting, and the axis body of rotating shaft wears the upper end that is connected to the compasses supporting leg.

In the mathematical education process, the mode of often understanding teaching of use instrument mapping is abstract to some, indigestibility, difficult memory mathematics examination question carry out the chart teaching, in mode intuitively, helps the student to understand and remembers.

Summary of the invention

A kind of math teaching aid of the technical solution of the utility model, formed by base 1, dial 2, guide rail 3, chi frame 4, flex-steel tape rule core 5, tape measure 6 and chalk holder 7, it is characterized in that: be provided with the hollow dial 2 with angle in described base 1, be set with guide rail 3 on the circumference of dial 2, between described the guide rail 3 and center of circle by dial 2 is provided with chi frame 4, be set with tape measure 6 on chi frame 4, described chalk holder 7 is arranged on flex-steel tape rule core 5.

The beneficial effects of the utility model are: being convenient for carrying use is that the scale protractor manufactured materials that can inhale on blackboard is originated extensively, and cost is low, and is simple in structure, is convenient to make, and practical, the application market amount is large, and there are great returns of investment the side of practicing midwifery.

For make up some measurer in the use unicity and carry and take care of on use inconvenient, the utlity model has simple in structure, modern design is unique, reasonable in design, have flexibility and comprehensive practical value in use, realize multi-use, thereby increased work efficiency, embodied again social benefit.by be provided with the hollow dial 2 with angle in base 1, be set with guide rail 3 on the inner periphery of dial 2, between described the guide rail 3 and center of circle by dial 2 is provided with chi frame 4, be set with tape measure 6 on chi frame 4, one end of flex-steel tape rule core 5 is installed on described tape measure 6, be provided with chalk holder 7 in the other end of flex-steel tape rule core 5, like this, during use, chi frame 4 can be in the interior 360 ° of rotations of guide rail 3, can draw straight line or oblique line at any angle, in addition, because chi frame 4 is the flexible tape measure with scale, and can rotate on described tape measure 5, can draw circle or the circular arc of arbitrary diameter, realized in the mathematical education process utilizing teaching and administrative staff's tool to carry out the chart teaching, help the student to understand and remember in more intuitive mode.

Therefore the utlity model has following advantage: the school of the overwhelming majority is all also using traditional wooden teaching appliance (comprising wooden educational compasses, wooden set square etc.) at present.Although the unit price of this class utility model is cheap, but easily damage, general school uses an academic year, and even halves just needs to change, very waste.

So, this novel multifunctional teaching compasses set square just base design therewith:

Than function: compasses, ellipsograph, set square, protractor, ruler, even no matter the function of teacher's pointer, be primary school, junior middle school, or senior middle school, buy a cover multifunctional compass and be equivalent to buy 6 teaching aids, it is convenient, powerful to save.

Specific mass: the quality of common wooden utility model is needless to say more, and school used all to be known, often falls on the ground and has just dissipated because of carelessness, is very easy to bad.And adopt superpower plastics to make, falls test through anti-, so long as not wanting intentionally, it is broken, at will fall definitely fall not bad.

This scale angle gage structure is simple, and is easy to make, easily popularizes use.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is schematic top plan view of the present utility model.

Fig. 3 is generalized section of the present utility model.

In figure: 1, base, 2, dial, 3, guide rail, 4, the chi frame, 5, the flex-steel tape rule core, 6, tape measure, 7, chalk holder.

The specific embodiment

the utility model relates to a kind of math teaching aid, it is characterized in that: be provided with the hollow dial 2 with angle in base 1, be set with guide rail 3 on the inner periphery of described dial 2, between described the guide rail 3 and center of circle by described dial 2 is provided with chi frame 4, be set with tape measure 6 on described chi frame 4, flex-steel tape rule core 5 is installed on described tape measure 6, described flex-steel tape rule core 5 is the flex-steel tape rule with scale, and can rotate on described tape measure 6, be provided with chalk holder 7 in the other end of described flex-steel tape rule core 5, like this, during use, chi frame 4 can be in the interior 360 ° of rotations of guide rail 3, can draw straight line or oblique line at any angle, in addition, because chi frame 4 is the flexible tape measure with scale, and can be in described tape measure 6 rotations, can draw circle or the circular arc of arbitrary diameter, realized in the mathematical education process utilizing teaching aid to carry out the chart teaching, help the student to understand and remember in more intuitive mode.

" with ruler, doing line segment and angle " is a learning content after " conditions of the feature of parallel lines and exploration parallel lines ", plays a part to form a connecting link in the chronological order of this chapter teaching material.This class is introduced teaching to concrete life situation, allows the student experience the close ties of mathematics and daily life, and impression is simultaneously made a line segment and equaled the realistic meaning of known line segment.Do the activity of beautiful pattern by ruler, cultivate student's aesthetic consciousness, allow them know from experience MATHEMATICAL AESTHETICS and how much U.S.s in study, the more important thing is the space that further develops the student, form the good habit of Research Learning, for the study of follow-up chapters and sections lays the first stone.Because seven classmans are in the period of thinking in images to the abstract thinking transition, have stronger curiosity, aspiration to knowledge, the mutual enthusiasm of puing question to of cooperating with each other between the student is also higher, they have possessed certain summarizes and the ability of expression simultaneously, and have the aesthetic conceptions of oneself, so they should be higher for the enthusiasm of learning construction with ruler and compasses.

Based on above analysis, the design philosophy of this class is: the student plays an active part in teachers organization, under guiding, coaching, be diligent in starting, really in the process of independently probing into cooperation and exchange effectively understand and grasp knowledge and can arbitrarily draw angle, measuring angle, picture vertical line, parallel lines, survey gradient, perpendicularity, levelness, can work as inside and outside right angle and turn chi, open, close up, can work as the length ruler and can also more intuitively read, and draw the circle of given size.Utility model can be practically applicable to pupils and students by the small-sized stationery of three types processed: A (main material is plastics); Type B teaching aid (main material is plastics) is practically applicable to school teacher; C type instrument (main material is stainless steel metal) is practically applicable to factory, workshop, carpenter, skilled worker, mechanic etc.As: teacher, pupils and students' doing mathematics, geometry and little making or mechanic measure to draw, need to carry while making protractor, set square, ruler, compasses and workman with horizon rule, turn chi, estimate the above-mentioned measurer such as table.For make up above-mentioned measurer in the use unicity and carry and take care of the inconvenience of using.The utlity model has simple in structure, modern design is unique, and is reasonable in design, very flexible in use, has comprehensive practical value, realized multi-use, thereby improve working efficiency.

The purpose of this utility model is to provide a kind of simple in structure, convenience easy to operate, the math teaching aid that can help the student to understand and remember.

Above-described embodiment is the better embodiment of the utility model, but embodiment of the present utility model is not restricted to the described embodiments, and the utility model not part of detailed description is known technology.

Claims (1)

1. math teaching aid, formed by base (1), dial (2), guide rail (3), chi frame (4), flex-steel tape rule core (5), tape measure (6) and chalk holder (7), it is characterized in that: be provided with the hollow dial (2) with angle in described base (1), be set with guide rail (3) on the circumference of dial (2), between described guide rail (3) and the center of circle by dial (2) is provided with chi frame (4), be set with tape measure (6) on chi frame (4), described chalk holder (7) is arranged on flex-steel tape rule core (5).

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