WO2005024757A1

WO2005024757A1 - Book for learning

Info

Publication number: WO2005024757A1
Application number: PCT/KR2003/002310
Authority: WO
Inventors: Young Doo Jo; Il Yong Lee
Original assignee: Young Doo Jo; Il Yong Lee
Priority date: 2003-09-05
Filing date: 2003-10-30
Publication date: 2005-03-17
Also published as: KR100511772B1; AU2003274791A1; KR20050025015A

Abstract

The present invention relates to a book for learning which is formed of a plurality of book sheets capable of directly fabricating a musical instrument such as an ocarina, recorder, maracas, etc. It is possible to easily learn a sound generated by the fabricated musical instrument, so that a user may learn a music based on a friendly attitude. In addition, the user can easily fabricate a musical instrument, thus understanding a principle of science. Since a musical instrument is expressed in graphics, a mathematical understanding is enhanced, and an aesthetic sense is developed. It is possible to learn math, science, music, art, etc., while folding a paper.

Description

BOOK FOR LEARNING

Technical Field The present invention relates to a book for learning in which it is possible to learn math, science, music, art, etc., while folding a paper, and in particular to a book for learning which is formed of a plurality of book sheets capable of directly fabricating a musical instrument such as an ocarina, recorder, maracas, etc. It is possible to easily learn a sound generated by the fabricated musical instrument, so that a user may learn music based on a friendly attitude. In addition, the user can easily fabricate a musical instrument, thus understanding a principle of science. Since a musical instrument is expressed in graphics, a mathematical understanding is enhanced, and an aesthetic sense is developed.

Background Art Generally, a musical instrument such as an ocarina, recorder, maracas, etc. is fabricated using clay, ceramic ware, resin, etc. Each musical instrument will be described below. First, the ocarina is a kind of musical instruments, which is generally fabricated using clay or a ceramic ware. It is known that the ocarina is invented by Italian Donati in the late of 19C. An upper side of the ocarina is protruded, so that a user contacts the protrusion with his mouth and blows. A plurality of resonance holes are formed. There are provided finger holes by 4 through 13 each representing a corresponding scale. It is possible to form a chromatic scale by controlling fingers. The above ocarina is closed in all sides differently from a common wind instrument which is opened, so that a sound is not escaped to the outside, but is resonated therein for thereby generating a certain sound. The above ocarina is generally used due to its beautiful sound.

However, the ocarina is made of clay or ceramic ware, so that it is expensive, and it is fragile. Therefore, there is a certain limit for using the ocarina. The recorder is a kind of wind instrument. A user contacts his mouth with a hole formed in a body of the recorder and blows for thereby generating a certain sound. The recorder is designed to generate a sound in such a manner that a user blows into a hole formed in a body, and an air in the interior of the body is vibrated, thus generating a sound. A sounding method and fingering method are the same as the conventional wind instrument. The above recorder is easily available and generates a beautiful sound, so that many people use the recorder. However, the recorder is generally made of a wooden material or a certain metal. The fabrication cost is expensive, and it is impossible for a user to directly fabricate the recorder. In addition, the maracas is a kind of musical instruments which is fabricated in such a manner that the stuff of a maraca fruit is removed, and then the dried seeds of the maraca are inserted into the interior of the maraca for thereby fabricating the maracas by adding a handle thereto. A player swings the maracas, holding the handle. The maracas is one of the important musical instrument in the Latin America music as a rhythm musical instrument. The maracas is made of a leather or wooden material. The thusly fabricated maracas is easy to use and generates a rhythmical light sound. However, the maracas is made of a leather and wooden material, so that the fabrication cost is high, and it is too heavy for a children to use the same. As described above, the above described musical instruments can not be easily fabricated by the users. The prices of the same are expensive, so that a common people can not buy it.

Disclosure of Invention Accordingly, it is an object of the present invention to provide a book for learning which overcomes the problems encountered in a conventional art. It is another object of the present invention to provide a book for learning which is formed of a plurality of book sheets capable of directly fabricating a musical instrument such as an ocarina, recorder, maracas, etc. It is possible to easily learn a sound generated by the fabricated musical instrument, so that a user may learn a music based on a friendly attitude. In addition, the user can easily fabricate a musical instrument, thus understanding a principle of science. Since a musical instrument is expressed in graphics, a mathematical understanding is enhanced, and an aesthetic sense is developed. It is possible to learn math, science, music, art, etc., while folding a paper. To achieve the above objects, in a book for learning which includes a plurality of sheets between a front cover sheet and a back cover sheet, here is provided a book for learning which includes a thick sheet which is constructed in such a manner that a certain development figure corresponding to a certain musical instrument is formed on one surface of each sheet and is cut for folding the sheet, and a learning sheet which is provided on a front side of the thick sheet and includes a description on the musical instrument fabricated by the thick sheet and a certain content for learning a principle of the sound. A non-toxic process is performed with respect to one surface of each thick sheet. A development figure corresponding to a certain musical instrument such as an ocarina, recorder, maracas, etc. is cut and folded for thereby fabricating a paper musical instrument. A paper ocarina which is a musical instrument fabricated by the thick sheet includes a plurality of regular triangle shaped plane portions, a body which is formed in such a manner that an adhering portion extended from a part of the plane portion is adhered and assembled with each other for thereby being formed in a spherical shape in general, a sound hole formed in one surface among the plane portions, a plurality of fingering holes formed at both sides of the same with respect to the plane unit to be opposite each other, and a blowing member which communicate with the sound hole and is attached to one side of the same and has a blowing hole in the interior of the same, wherein a development figure corresponding to a shape of an ocarina is formed in the thick sheet. A paper recorder fabricated by the thick sheet includes a body portion which is formed in an inverted trapezoid shape and includes a blowing portion in the upper side of the same, a body which is formed of paper and is constructed in such a manner that an adhering portion extended from one side of the body portion with respect to a cutting line is adhered with each other and is assembled for thereby forming a cylindrical shape in general, a closed portion which is inserted into the blowing portion of the body and has a concave portion in the upper surface of the same, a sound hole which is formed in an upper portion of the body at a front side of the body, and a plurality of fingering holes which are formed in a lower portion of the sound hole and each have a certain diameter, wherein a development figure corresponding to a shape of a recorder is formed on the thick sheet in such a manner that the adhering portion is folded so that the fingering holes are formed, while matching with the fingering holes of the body. A maracas which is a musical instrument fabricated by the thick sheet includes a plurality of plane portions each formed in a triangle shape, a body which is formed of paper and is constructed in such a manner that the inner surfaces of the plane portions are anti-toxic processed, and the adhering portion extended from a part of the plane portion is adhered with each other for thereby forming a polygonal structure, and an insertion hole formed in a front upper side, wherein a development figure corresponding to a shape of a maracas is formed on the thick sheet for thereby fabricating a maracas by a folding method.

Brief Description of Drawings The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein; Figure 1 is a perspective view illustrating a book for learning according to the present invention;

Figures 2 through 4H are views illustrating a paper ocarina of a first

embodiment of the present invention of a musical instrument which may be

fabricated using a learning book according to the present invention, of which: Figure 2 is a perspective view illustrating a paper ocarina according to

the present invention;

Figure 3 is a plane view illustrating an unfolded state of a paper ocarina

according to the present invention; and

Figures 4A through 4H are views illustrating a scale of a paper ocarina

according to the present invention;

Figures 5 through 7 are views illustrating a paper recorder of a second

embodiment of the present invention of a musical instrument which may be

fabricated by a learning book according to the present invention, of which:

Figure 5 is a disassembled perspective view illustrating a paper recorder

according to the present invention; Figure 6 is a plane view illustrating an unfolded state of a paper recorder according to the present invention; and Figure 7 is a plane view illustrating an unfolded state of a closing member adapted to a paper recorder according to the present invention; Figures 8 and 9 are views illustrating a paper maracas of a third embodiment of the present invention of a musical instrument which may be fabricated by a learning book according to the present invention, of which: Figure 8 is a perspective view illustrating a paper maracas according to the present invention; and Figure 9 is a view illustrating an unfolded state of a paper maracas according to the present invention.

Best Mode for Carrying Out the Invention The preferred embodiments of the present invention will be described with reference to the accompanying drawings. As shown in Figure 1 , a learning book according to the present invention is constructed in such a manner that a plurality of booth sheets 14 are provided between a front cover sheet 10 and a rear cover sheet 12 in the same manner as a common book. In the present invention, there are provided a thick sheet 14a designed to learn a principle of a sound by folding the book sheets 14, and learning sheets 14b which are fabricated by the thick sheet 14a and have a description on the musical instrument. A development figure corresponding to a corresponding musical instrument is detachably formed on one surface of the thick sheet 14a, so that a user folds along lines on the development figure and fabricates the musical instrument. Therefore, it is possible to learn the principle of the sound by fabricating a corresponding musical instrument in the above manner. The learning sheets 14b are formed on the front side of the thick sheet 14a. A description of the musical instrument fabricated using the thick sheet 14a, and a learning contents of the principle of the sound are printed thereon. In addition, as the musical instruments fabricated using the above thick sheet 14a, there are an ocarina, maracas, pen flute, recorder, etc. The thick sheet is designed to be folded for fabricating the above musical instruments. One surface of the thick sheet 14a may be heat-treated and vinyl-coated. In the present invention, it is possible to directly fabricate a desired

musical instrument by folding the thick sheet 14a. The paper folding may

provide an educational value capable of enhancing a kid's creativity,

concentration, patience, imagination and expression, so that a user's EQ, IQ

and MQ may be enhanced. In addition, it is known that the paper folding is good

for a mentally disabled kid and a rehabilitation of a dementia patient and palsy

patient.

In the present invention, it is possible to fabricate a certain musical

instrument by folding a paper using various shapes. The paper folding operation

has a large educational value. In addition, it is possible to provide a

systematical education process by learning a principle that a musical instrument

is fabricated by folding a paper, through a learning book. It is possible to make

kids have a friendly effect with respect to science, math, music, art, etc., while

folding a paper. A learning effect may be further enhanced by providing a

description on the musical instruments. The preferred embodiments of the musical instruments fabricated using the thick sheet 14a will be described.

[First embodiment(Paper ocarina)] Generally, the ocarina is formed in a T shape and a spherical shape. As a musical instrument same as the ocarina, there is known a call shaped "Hoon" formed of a ceramic ware as one of the Chinese ancient old musical instruments. Orca represents a goose in Italian. Namely, the ocarina represents a small goose. Namely, in the ancient era, the ocarina may be formed in a spherical shape. The paper ocarina is made using a thick paper based on the above concept. Figure 2 is a perspective view illustrating a paper ocarina according to the present invention. The ocarina includes a polygonal body 110, a blowing member 120 formed in a front upper side of the body 110, a sound hole 113 and a plurality of fingering holes 114. The body 110 is formed in a spherical shape having angles. The interior of the body 110 is all closed except for the sound hole 113 and the fingering holes 114. The plane portions 111 formed of 20 surfaces are assembled or attached for thereby fabricating the spherical body 110. Namely, the plane portions 111 are formed in a regular triangle. Each plane portion 111 is bent at a certain angle with respect to the neighboring plane portion 111 for thereby forming a spherical shape in general. At this time, the sound hole 113 is formed in the plane portion 111 formed in the upper surface of the body 110. The blowing member 120 is attached to one side near the sound hole

113, and a blowing hole 121 passes trough the interior of the blowing member 120. One end of the same is positioned on the straight line extended from the sound hole 113. The fingering holes 114 are closed and opened using fingers, so that the levels of the sound from the sound hole 113 is adjusted. Here, the fingering holes 114 are formed in the front and rear surfaces of the blowing member 120 by multiple numbers. Namely, one is formed in the rear surface of the blowing member 1290, and three pairs of the fingering holes are formed in the front surface and both sides with respect to the blowing member 120 in such a manner that the user's fingers easily close and open the fingering holes using both hands. A strap connecting the corner portions of the body 110 may be used, and may be hung on the user's neck for thereby implementing an easier use of the ocarina. Figure 3 is a view illustrating an unfolded state before a paper ocarina is fabricated according to the present invention. A certain content may be printed on the thick sheet 14a according to the present invention, and the thick sheet 14a is cut along a cutting line. The thick sheet is preferably formed of a relatively thick sheet. A triangle plane portion 111 is formed by a plurality of dotted lines 115. The sound hole 113 and the fingering holes 114 pass through a part of the plane portion 111. An adhering portion 112 having a certain width is extended in one side or both sides of a part of the plane portion 111 , so that the adhering portions 112 are adhered with each other when the thick sheet is vent along the dotted line 115. At this time, the alphabets on the plane portion 111 and the adhering portion 112 represent the portions which are adhered with each other. Namely, the inner surface "a" of the plane portion 111 is adhered with the outer surface "a" of the adhering portion 112, and the inner surface "b" of the plane portion 111 is adhered with the outer surface "b" of the adhering portion for thereby fabricating the ocarina. In the present invention, it is possible to fabricate the ocarina at a lower cost by a user who can not afford the expensive ocarina which is made of clay or ceramic ware. In addition, the ocarina according to the present invention is fabricated using paper, the finished ocarina is not easily broken by an external impact. Even though the paper ocarina is broken, since it is fabricated using a low cost paper, it is possible to remake the paper ocarina. The ocarina is the closed wind instrument differently from the other musical instrument. Namely, the other musical instrument has wind inlets smaller than the wind outlets. However, the ocarina has only wind inlets without wind outlets. Namely, the sound and tone of the ocarina are different based on the sizes of the fingering holes. The conventional ocarina is fabricated using clay or ceramic ware. However, in the present invention, it is possible to fabricate an ocarina using paper. In this case, there may be a difference in a sound quality due to the different materials. However, in the case of the spherical ocarina, since the sound is reflected by an inner circular surface and is outputted to the outside, the paper ocarina has a relatively easy reflection width compared to the T shaped ocarina. Therefore, even when there is a certain difference in the material, the sound is not largely changed. It is preferably needed to accurately form the fingering holes and to accurately match the tones of each sound. Figures 4A and through 4H are views illustrating the scales using a paper ocarina according to the present invention. As shown therein, there are shown one octave formed of Do, Re, Mi, Pa, Sol, La, Shi, Do in the sequence of the drawings. In a relatively large ocarina(musical instrument of major A), one side of the plane portion is 4cm. The diameter of the fingering hole "Re" is 4mm, Mi is 6.5mm, Pa is 5mm, Sol is 7mm, La is 8.9mm, Shi is 11mm, and Do is 9.8mm. The length of the blowing member is 3cm, and the diameter of the blowing hole is 9mm. In a relatively small ocarina(musical instrument of major D) having a regular triangle plane portion, one side of the plane portion is 3cm. The diameter of the fingering hole "Re" is 2.8mm, Mi and P are 4mm, Sol is 6mm, La is 7mm, Shi is 8mm, and Do is 7mm. Since the above ocarina is directly fabricated using paper, it is possible to guide kids to have a desired learning effect based on a certain concept and effort. The kinds can play the ocarinas fabricated by themselves and have a concert for thereby enhancing a musical knowledge. The paper ocarina is not easily broken by an external impact because it is fabricated using paper. Even when the paper ocarina is broken, it is possible to remake because it is made of a low cost paper. Therefore, the users who cannot afford to fabricate the ocarina made of clay or ceramic ware can directly fabricate and use at a lower cost.

[Second embodiment(Paper recorder)] Figure 5 is a disassembled perspective view illustrating a paper recorder according to the present invention. The paper recorder includes a longitudinal body 210, and a closed member 220 inserted into an upper portion of the body 210. The body 210 is formed in a hollow cylindrical shape. A blowing portion 212 is formed in a front upper side. A sound hole 213 and a plurality of fingering holes 215 are formed in a portion below the blowing portion 212 by a certain distance. A ventilation hole 214 is formed in an opposite end portion of the blowing portion 212. The body 210 is fabricated in such a manner that a plane portion 211 having a certain area is rolled in a cylindrical shape. At this time, a rectangular sound hole 213 is formed in a front upper portion of the body 210. The lower portion of the sound hole 213 has a sharp angle so that a sound is generated based on a vibration of the air in the interior of the pipe. The closing member 220 provided in the interior of the blowing portion

212 is engaged separately from the interior of the blowing portion 212 for thereby adjusting a sound tone of a recorder. A concave portion 222 is formed in an upper surface of the closing member 220, so that the air is flown into the interior of the body 210 through the blowing portion 212. As the fingering holes 215 are opened and closed by fingers, the levels of the sounds from the sound hole 213 are changed. The fingering holes 215 are formed in the front and back surfaces of the body 210 by multiple numbers.

Namely, one fingering hole 215 is formed in the back surface of the body 210, and about 7 fingering holes 215 are formed in the front surface, so that a user opens and closes the fingering holes 215 using both hands. Figure 6 is a view illustrating an unfolded state before a paper recorder is fabricated according to the present invention. The thick sheet 14a of the present invention is designed to be printed and cut. In the thick sheet, there are provided a body 211 having a certain area, and an adhering portion 217 provided in one side of the body 211 and adhered with each other when forming a cylindrical shape. The adhering portion 217 is extended by a certain width. In the case that the body 211 is rolled in a cylindrical shape, the

diameter of the same is gradually decreased in the downward direction for

thereby forming an inverted conical shape.

At this time, the sound hole 213 and the fingering holes 215 are formed

in the body 211. After the body 211 is formed in a cylindrical shape, the adhering

portion 217 having an adhesive is adhered to the body 211. One fingering hole

215, 215' is positioned in the back surface of the body 210 by forming the same

at the same positions of the body 211 and the adhering portion 217.

In the above paper recorder, the user who cannot afford to buy the

expensive recorder made of a wooden material or metal can directly make at a

lower cost and can use the same. The paper recorder according to the present

invention is fabricated using paper, it is not easily broken by an external impact. Even when it is broken, it is possible to remake the paper recorder because the

material is cheap. When the recorder is fabricated using paper differently from the

common recorder, there may be a sound difference due to the different materials. When winding the body 211 from a unfolded state, the diameters of the holes are gradually decreased from the blowing portion 212 to the ventilation hole 214. In addition, it is needed to accurately form the fingering holes 215, and the tones of each sound should be matched. Namely, when the length of the body 210 is 310mm, the diameter of the fingering hole corresponding to Do is 4.5mm, Re is 6.5mm, Mi is 4mm, Pa is 5mm, Sol is 8mm, Shi is 4.5mm, and high Do is 3mm. At this time, the horizontal and vertical lengths are 12mm and 6mm, respectively. Figure 7 is a plane view illustrating an unfolded state of a closing portion adapted to a paper recorder according to the present invention. As shown therein, in the closing member 220 of the present invention, 12 rectangular plane portions 221 are divided about the cutting line 223 in different sizes. The closing member 220 is capable of generating an accurate tone of the recorder by adjusting the depth that the closing member 220 is inserted into the interior of the blowing portion 212. The fabrication procedure of the above paper recorder will be described. The adhering portion 217 having an adhesive in order for the fingering holes 215, 215' which will be positioned in the back surface of the body 210 to be matched is attached to the body 211 , and then a tape is attached. When the adhering procedure is completed, a certain pressure is applied to the lower portion of the sound hole 213 of the body 210 for thereby forming a certain angle thereat. A certain force is applied to an upper portion of the rectangular closed member 220 formed by bending and adhering along the cutting line 223 for thereby forming a concave portion. The thusly formed structure is provided in the blowing portion 212 of the body 210 of the recorder. In a state that the fingering holes 215 are all opened, air is blown into the blowing portion 212 for thereby checking whether a desired sound is outputted, while adjusting the position of the closing member 220. The paper recorder according to the present invention is fabricated using paper, so that it is possible to guide kinds to have a certain learning effect and achievement through a construction learning based on an idea and effort. As a user himself can directly fabricate a musical instrument and use the same, the user can have a music friendly mind. In addition, since the user can directly learn a principle of science, a music education effect is increased. In addition, since the paper recorder is fabricated using paper like the paper ocarina, the paper recorder is not easily broken by an external impact. Even though the paper recorder is broken, since it is fabricated using paper, it is possible to remake the same one at a lower cost.

[Third embodiment(Paper maracas)] Figure 8 is a perspective view illustrating a paper maracas according to the present invention. The paper maracas includes a polygonal body 310, and an insertion hole 312 formed in a front upper portion of the same. The body 310 is formed in a spherical shape in general and has angles.

The interior of the same is all closed except for the insertion hole 312. In the present invention, 20 surfaces of the plane portion 311 are assembled with each other or are adhered to each other for thereby forming a polygonal body 310. The plane portion 311 is formed in a regular triangle shape. The plane portion 311 has a certain bent angle with respect to the neighboring plane portion 311 for thereby forming a polygonal construction. At this time, an insertion hole 312 is formed in the plane portion 311 formed in the upper surface of the body 310. Figure 9 is a view illustrating an unfolded state before a paper maracas is fabricated. The thick sheet 14a may be printed with a certain content and may be cut. The triangle plane portion 311 is formed by a plurality of cutting lines. One plane portion 311 having the insertion hole 312 is included in the plane portion 311. An adhering portion 313 having a certain width is extended from one side or both sides of a part of the plane portion 311 for being adhered after it is cut along the cutting line 314. At this time, the alphabets on the plane portion 311 and the adhering portion 313 represent the portions which are adhered with each other. Namely, the inner surface "a" of the plane portion 311 is adhered with the outer surface "a" of the adhering portion 313, and the inner surface "b" of the plane portion 311 is adhered with the outer surface "b" of the adhering portion 313 for thereby fabricating the maracas. In the above paper maracas, the user who cannot afford to buy the expensive maracas made of a wooden material or metal can directly make at a lower cost and can use the same. The paper maracas according to the present invention is fabricated using a paper, it is not easily broken by an external impact. Even when it is broken, it is possible to remake the paper maracas because the material is cheap. The maracas is a percussion instrument, namely, a kind of idiophone. In detail, the maracas belongs to a vibration type instrument. It is possible to generate various sounds by changing the things inputted into the interior of the maracas. Namely, rice, red bean, etc. may be inputted thereinto. In the present invention, a certain kind of things may be inputted through an insertion hole 312 formed in the upper surface of the body 310. It is possible to generate various tones by changing the amount and kinds of the things inserted into the interior, so that kids are much interested. In addition, the maracas is generally made of a leather or wooden material. When fabricating the maracas using paper like the present invention, a certain sound difference may occur due to the different materials. The maracas in which the sounds are generated when the things collide each other in a 20 - triangle shape structure does not have a large sound change compared to a circular egg shaped maracas. Preferably, it is needed to reinforce the inner surface of the maracas for enduring a certain friction force because the inner surface of the same is made of paper. As described above, since the paper maracas is fabricated using paper, it is possible to guide kids to have a desired learning effect through a construction operation based on an idea and efforts. In addition, it is possible to make kinds have a music friendly activity based on a simple method of use. In the above descriptions, only the first, second and third embodiments(ocarina, recorder, maracas) according to the present invention were described. In the present invention, it is possible to fabricate a pen flute. It is possible to fabricate an ocarina using a recyclable item or using a pencil casing. In this case, it is preferred to form a paper having fingering holes and mouse piece capable of generating a certain sound in the recycling item or pencil casing in the thick sheet 14a. Therefore, it is possible to easily fabricate the ocarina. As described above, in the present invention, it is possible to provide a book for learning which is formed of a plurality of book sheets capable of directly fabricating a musical instrument such as an ocarina, recorder, maracas, etc. It is possible to easily learn a sound generated by the fabricated musical instrument, so that a user may learn music based on a friendly attitude. In addition, the user can easily fabricate a musical instrument, thus understanding a principle of science. Since a musical instrument is expressed in graphics, a mathematical understanding is enhanced, and an aesthetic sense is developed. It is possible to learn math, science, music, art, etc., while folding a paper. As described above, the above description is one embodiment for implementing a hair cutting scissors according to the present invention. The present invention is not limited to the above embodiment. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above- described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

Claims:

1. In a book for learning which includes a plurality of sheets between a front cover sheet and a back cover sheet, a book for learning, comprising: a thick sheet which is constructed in such a manner that a certain development figure corresponding to a certain musical instrument is formed on one surface of each sheet and is cut for folding the sheet; and a learning sheet which is provided on a front side of the thick sheet and includes a description on the musical instrument fabricated by the thick sheet and a certain content for learning a principle of the sound.

2. The book of claim 1 , wherein one surface of the thick sheet is heat- treated and is vinyl-coated.

3. The book of either claim 1 or claim 2, wherein a musical instrument fabricated by the thick sheet is fabricated in such a manner that a development figure corresponding to each musical instrument is cut and folded for thereby fabricating an ocarina, recorder, maracas, etc.

4. The book of claim 3, wherein a paper ocarina which is a musical instrument fabricated by the thick sheet includes: a plurality of regular triangle shaped plane portions; a body which is formed in such a manner that an adhering portion extended from a part of the plane portion is adhered and assembled with each other for thereby being formed in a spherical shape in general; a sound hole formed in one surface among the plane portions; a plurality of fingering holes formed at both sides of the same with

respect to the plane unit to be opposite each other; and a blowing member which communicate with the sound hole and is

attached to one side of the same and has a blowing hole in the interior of the

same, wherein a development figure corresponding to a shape of an ocarina is

formed in the thick sheet.

5. The book of claim 3, wherein a paper recorder fabricated by the thick

sheet includes: a body portion which is formed in an inverted trapezoid shape and

includes a blowing portion in the upper side of the same; a body which is formed of paper and is constructed in such a manner that an adhering portion extended from one side of the body portion with respect to a cutting line is adhered with each other and is assembled for thereby forming a cylindrical shape in general; a closed portion which is inserted into the blowing portion of the body and has a concave portion in the upper surface of the same; a sound hole which is formed in an upper portion of the body at a front side of the body; and a plurality of fingering holes which are formed in a lower portion of the sound hole and each have a certain diameter, wherein a development figure corresponding to a shape of a recorder is formed on the thick sheet in such a manner that the adhering portion is folded so that the fingering holes are formed, while matching with the fingering holes of the body.

6. The book of claim 3, wherein a maracas which is a musical instrument fabricated by the thick sheet includes: a plurality of plane portions each formed in a triangle shape; a body which is formed of paper and is constructed in such a manner that the inner surfaces of the plane portions are heat-treated and vinyl-coated, and the adhering portion extended from a part of the plane portion is adhered with each other for thereby forming a polygonal structure; and an insertion hole formed in a front upper side, wherein a development figure corresponding to a shape of a maracas is formed on the thick sheet for thereby fabricating a maracas by a folding method.