CN201369115Y - Geometric puzzle plate - Google Patents

Abstract

A geometric puzzle plate comprises a plurality of geometric plates. At least one circumferential edge of each geometric plate is provided with a magnet. The amount and the shape of the geometric plates are as follows that (1) the geometric plates comprise four right-angle triangle plates with identical size, and the length of a long square edge of each right-angle triangle plates is as twice as that of a short square edge, (2), the geometric plates comprise a semi-circular plate, and the diameter of the semi-circular plate is identical to the length of the long square edge of each right-angle triangle plate, (3) the geometric plate comprise two fan-shaped plates with identical size, the radius of each fan-shaped plate is identical to the length of the short square edge of each right-angle triangle plate, and a central angle of each fan-shaped plate is 90 degrees, (4) the geometric plates comprise an isosceles right triangle plate, and the length of a beveled edge of the isosceles right triangle plate is identical to that of the long square edge of each right-angle triangle plate, (5) the geometric plates comprise two isosceles right triangle plates with identical size, and the length of a beveled edge of each isosceles right triangle plate is identical to that of the short square edge of each right-angle triangle plate. The geometric plates made of plastics or woods. The geometric puzzle plate has the advantages of convenient carrying and easy combination.

Description

The geometrical picture arrangement plate

Technical field

The utility model relates to a kind of teaching aid, particularly relates to a kind of geometrical picture arrangement plate.

Background technology

At present, the geometric figure plate when especially mathematics class is imparted knowledge to students, often need carry in school teacher when teaching.Especially the geometric figure that involves when lecture contents more for a long time, teacher will make various graphic boards in advance, has so just increased teacher's workload.And in teaching process, because various graphic boards all are independently, optionally change shape is difficult to allow the student understand relation inherent between the various figures intuitively, and student's abstract thinking is difficult to obtain exercise.

The utility model content

The technical problems to be solved in the utility model provides a kind of easy to carry, easy geometrical picture arrangement plate of combination.

For solving the problems of the technologies described above, the utility model geometrical picture arrangement plate comprises several geometric figure plates, Yi Bian each geometric figure plate circumferential magnet arranged at least.

After adopting such structure, by the circumferential magnet of each geometric figure plate, last class hour of teacher is can be on blackboard convenient, optionally splice and combine out various geometric figures, as the geometric figure of: rectangle, square, trapezoidal, rhombus, parallelogram, taper, circle, semicircle and other various abnormity.Like this, this geometrical picture arrangement plate is change shape optionally, can allow the student understand relation inherent between the various figures intuitively, and student's abstract thinking is easy to obtain take exercise.

Therefore, this geometrical picture arrangement plate has easy to carry, the easy advantage of combination.

The quantity and the shape of described geometric figure plate are as follows:

The modification of right-angled triangle plate of (1) four same specification, the long right-angle side length of modification of right-angled triangle plate are the twices of short right-angle side length;

(2) semicircular plates, its diameter is identical with the long right-angle side length of modification of right-angled triangle plate described in (1);

The fanning strip of (3) two same specifications, the short right-angle side length of the radius of fanning strip and modification of right-angled triangle plate described in (1) is identical, central angle is 90 degree;

(4) isosceles right-angled triangle plates, its hypotenuse length is identical with the long right-angle side length of modification of right-angled triangle plate described in (1);

The isosceles right-angled triangle plate of (5) two same specifications, the hypotenuse length of isosceles right-angled triangle plate is identical with the short right-angle side length of modification of right-angled triangle plate described in (1).

The material of described geometric figure plate is plastics or timber.

Description of drawings

Fig. 1 is the structural representation of the utility model first embodiment;

Fig. 2 is the structural representation of the utility model second embodiment;

Fig. 3 is the structural representation of the utility model the 3rd embodiment.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is specifically described:

For the purpose of energy brief description problem, not shown for the profile line of geometric figure plate in three embodiments of the utility model.

First embodiment

Referring to Fig. 1, this geometrical picture arrangement plate comprises the geometric figure plate of following quantity and shape: the modification of right-angled triangle plate 1 of four same specifications, the long right-angle side length of modification of right-angled triangle plate 1 are the twices of short right-angle side length; An isosceles right-angled triangle plate 2, its hypotenuse length is identical with the long right-angle side length of above-mentioned modification of right-angled triangle plate.Each modification of right-angled triangle plate 1 each circumferential limit all is inlaid with magnet 11.Isosceles right-angled triangle plate 2 circumferential hypotenuses are inlaid with magnet 21.Four modification of right-angled triangle plate 1 splice and combine out a square by magnet 11, and isosceles right-angled triangle plate 2 splices and combines at foursquare upper side edge place by magnet 21, thereby have constituted the geometric figure of an abnormity shown in Figure 1.The material of modification of right-angled triangle plate 1 and isosceles right-angled triangle plate 2 is plastics.

Second embodiment

Referring to Fig. 1, Fig. 2, this geometrical picture arrangement plate comprises the geometric figure plate of following quantity and shape: the isosceles right-angled triangle plate 3 of two same specifications, the hypotenuse length of isosceles right-angled triangle plate 3 is identical with the short right-angle side length of modification of right-angled triangle plate 1 described in first embodiment.Isosceles right-angled triangle plate 3 circumferential hypotenuses are inlaid with magnet 31.Two isosceles right-angled triangle plates 3 splice and combine out a square by magnet 31.The material of isosceles right-angled triangle plate 3 is a timber.

The 3rd embodiment

Referring to Fig. 1, Fig. 3, this geometrical picture arrangement plate comprises the geometric figure plate of following quantity and shape: a semicircular plate 4, and its diameter is identical with the long right-angle side length of modification of right-angled triangle plate 1 described in first embodiment; The fanning strip 5 of two same specifications, the short right-angle side length of the radius of fanning strip 5 and modification of right-angled triangle plate 1 described in first embodiment is identical, central angle is 90 degree.Semicircular plate 4 circumferential straight flanges are inlaid with magnet 41.The intersection of two straight flanges that fanning strip 5 is circumferential is inlaid with magnet 51.Semicircular plate 4, two fanning strips 5 splice and combine out a circle by magnet 41 and two magnet 51.The material of semicircular plate 4, fanning strip 5 is plastics.

Claims (3)

1, geometrical picture arrangement plate comprises several geometric figure plates, it is characterized in that: Yi Bian each geometric figure plate circumferential magnet arranged at least.

2, geometrical picture arrangement plate according to claim 1 is characterized in that: the quantity and the shape of described geometric figure plate are as follows:

The modification of right-angled triangle plate of (1) four same specification, the long right-angle side length of modification of right-angled triangle plate are the twices of short right-angle side length;

(2) semicircular plates, its diameter is identical with the long right-angle side length of modification of right-angled triangle plate described in (1);

The fanning strip of (3) two same specifications, the short right-angle side length of the radius of fanning strip and modification of right-angled triangle plate described in (1) is identical, central angle is 90 degree;

(4) isosceles right-angled triangle plates, its hypotenuse length is identical with the long right-angle side length of modification of right-angled triangle plate described in (1);

The isosceles right-angled triangle plate of (5) two same specifications, the hypotenuse length of isosceles right-angled triangle plate is identical with the short right-angle side length of modification of right-angled triangle plate described in (1).

3, geometrical picture arrangement plate according to claim 1 and 2 is characterized in that: the material of described geometric figure plate is plastics or timber.

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