KR20210088263A - Learning system of polygon stick for cognitive development - Google Patents

Abstract

According to the present invention, disclosed is a technical idea including: a body unit which has a polygonal cross-section, and in which a body is formed in the longitudinal direction and the other surface is parallel with the ground in a different direction when one surface comes in contact with the ground horizontally; a mark unit fixedly attached to each side of the body unit and displaying a predetermined value; and a balance unit formed inside the body unit to provide a change in the center of gravity on the cross-section of the body unit.

Description

Polygonal rolling teaching system for cognitive development {Learning system of polygon stick for cognitive development}

The present invention relates to a rolling teaching aid, and more particularly, when rolling a polygonal rolling teaching aid, it is a technical field related to a rolling teaching aid for cognitive development that variably forms a moment of inertia to motivate learning through the teaching aid.

In early childhood education, teaching materials can be said to have a significant influence on the educational effect as they become a medium for children's teaching-learning activities, from motivating children's interest and motivation. Infants, whose play is learning, can be motivated through teaching materials, acquire various concepts, and promote holistic development. In addition, the quality of teaching materials is very important because the teaching materials determine the content and quality of education as a medium that determines the content of interaction.

The dictionary meaning of parish is a tool used to materialize, intuitively, and effectively guide learning. (National Institute of the Korean Language, 2019.12.04. Withdrawal)

In the Ministry of Education's 2nd Cycle Kindergarten Evaluation Manual, 'preschool' is a data directly used to achieve educational goals, and is generally defined as a model data, a tool used for teaching-learning activities, or a devised instrument. (Childcare Policy Research Institute, September 2011)

In other words, teaching aids can be toys, toys, models, samples, etc., and are provided for use in learning using various materials, and are used as an auxiliary for effective instruction, and their classification and categories are diverse.

According to a research study on the quality management plan for kindergarten teaching materials, the development of high-quality teaching aids was 19.7% in response to the demand for quality management of kindergarten teaching materials, followed by the management plan of teaching materials (37.3%), and this was the demand for the quality control of the teaching materials. It could be seen that the developmental level and management were favorably made in the parish. (Institute for Early Childhood Policy, September 2014)

Recently, interest in a single child has increased due to a decrease in the fertility rate, and parents' efforts to develop their child's cognitive development are expanding, and this market is also developing to meet the needs of consumers.

According to research data on cost estimation and countermeasures for childcare-education for infants and toddlers, 30.9% of the cost of teaching materials provided by individual and group instruction is paid, and if they do, they pay an average of 48,600 won per month. For children aged 4 and 0, the high cost of payment can be seen, which indicates that parents have a high interest in teaching materials and teaching aids that affect the development of children when they are young. (Institute for Early Childhood Policy, 2012)

In the case of the teaching aid market, the use and development direction of teaching aids for sensory and cognitive development of children is expanding, and added value is also being created.

Technological attempts of the parish are being made to meet these consumer needs.

As an example of a related prior patent document, "a teaching aid for math learning using dice (Publication No. 10-2016-0134886, hereinafter referred to as Patent Document 1)" exists.

In the case of Patent Document 1, it includes at least two or more dice that are made of a hexahedron and have one number from 1 to 5 or a symbol or figure representing the number on each side, and the numbers displayed on the upper surface are aligned by throwing each dice It is characterized by providing a teaching aid for mathematics learning that allows children to autonomously calculate and learn the combined and listed numbers according to the basic rules.

As another example of a patent document, "Multifunctional Dice 3 (Publication No. 10-2005-0033887, hereinafter referred to as Patent Document 2)" exists.

In the case of Patent Document 2, it relates to a multifunctional dice in the form of a hexagonal column. The multifunctional dice 3 body has hexagonal and quadrangular faces combined, and the small center bar can be used and switched individually, and all faces and opposite faces are upper and lower. It is disclosed as a technical feature that it is formed with a hexagonal dice that is parallelized and all cornered parts are rounded so that the characters on all sides thereof are formed in engraving.

In addition, as a prior patent document (registered utility model), "operation bar for learning play of blocks with various printing surfaces (registration number 20-0471717, hereinafter referred to as Patent Document 3)" exists.

The registered design according to Patent Document 3 is a polyhedron so that a printing part for learning is formed by being mounted on a play toy, and a block having a fitting tube formed with a locking part in the center is inserted into a cylindrical operation bar and rotates only one side by a locking which is elastically operated. In the learning toy to be used, the actuating bar is formed in a male and female semicircular shape with an inner space, fixing protrusions for fixing and mounting are formed on both sides, and an elastic bar that is elastically operated by an incision on the upper surface is integrally formed at regular intervals. The elastic ball is formed on the elastic bar, and during the rotation operation, the elastic bar on which the elastic ball is formed is elastically operated by pressurization, and is caught in the locking part, and it is disclosed as a technical idea that only one side is rotated.

In the registered design according to Patent Document 3, the elastic ball is formed to be curved, and for the elastic operation of the elastic bar on which the elastic ball is formed, a cutout is formed symmetrically left and right on the upper surface of the operation bar, and the thickness of the elastic bar is adjusted to the thickness of the operation bar. It is explained that it is a technology that makes elastic operation easier by forming it thinner than the flesh thickness.

Publication No. 10-2016-0134886 Publication No. 10-2005-0033887 Utility model registration number 20-0471717

Polygonal roll teaching aid system for cognitive development according to the present invention has been devised to solve the conventional problems as described above, and presents the following problems to be solved.

First, we want to provide a change in the center of gravity of the gullim parish itself.

Second, we want to make the change in the center of gravity of the gullim parish variable.

Third, the number of rolls is provided to maximize cognitive development.

The problems to be solved of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Polygonal roll teaching aid system for cognitive development according to the present invention has the following problem solving means for the problem to be solved above.

Polygonal roll teaching aid system for cognitive development according to the present invention, the cross-section is a polygon, the body is formed in the longitudinal direction, when one side is in contact with the ground horizontally, the other surface is formed to be horizontal with the ground in a different direction body unit; a mark unit fixedly attached to each side of the body unit and displaying a predetermined value; and a balance unit formed inside the body unit to provide a change in the center of gravity on the cross-section of the body unit.

The mark unit of the polygonal roll teaching aid system for cognitive development according to the present invention is provided by being fixedly attached to each side of the body unit, and the predetermined value is different for each side of the body unit, and as long as it is symmetrical to each other The sum of the faces of the pair may be characterized in that each coincides.

The balance unit of the polygonal roll teaching aid system for cognitive development according to the present invention includes: a rail portion forming a rail on the inner cross section of the body unit; and a weighting part provided on the rail part, which is arbitrarily moved along the rail part, and forms a change in the center of gravity on the cross-section of the body unit.

The rail part of the polygonal rolling teaching aid system for cognitive development according to the present invention is provided on the inner cross-section of the body unit, it may be characterized in that it enables the flow of the weighting part along a predetermined depth.

The body unit of the polygonal roll teaching aid system for cognitive development according to the present invention is disposed on at least one of one side or the other side, and may include a counting unit presenting the number of rolls of the body unit.

The counting unit of the polygonal roll teaching aid system for cognitive development according to the present invention, is provided in the body unit, when the roll of the body unit is provided, a counting unit presenting the number of rolls of the body unit; and a display unit interconnected with the counting unit, provided on one side or the other side of the body unit and exposed, and displaying the number of rolls of the body unit measured by the counting unit.

The counting unit of the polygonal roll teaching aid system for cognitive development according to the present invention is interconnected with the display unit, the roll of the body unit is provided to count the number of contacting each side of the body unit with the ground, the It may be characterized in that it is presented on a display unit.

The counting unit of the polygon roll teaching aid system for cognitive development according to the present invention is formed on the body unit, and may include a button unit configured to initialize the counting number of the display unit to 0 by a user's operation. .

The rail portion of the polygonal roll teaching aid system for cognitive development according to the present invention may be characterized in that the moment of inertia of the body unit is variably formed by arbitrarily changing the position of the weighting portion along the rail.

The counting unit of the polygonal roll teaching aid system for cognitive development according to the present invention, is disposed inside the body unit, a lead unit formed of two terminals spaced apart from each other in parallel; and a magnetic part disposed on each side of the body unit and temporarily contacting the lead part in a state of overlapping each other when each surface of the body unit is in contact with the ground, wherein the counting part includes the lead part temporarily overlapping It may be characterized in that the number of times is counted as the number of rolls.

Polygonal rolling aid system for cognitive development according to the present invention of the configuration as described above provides the following effects.

First, by forming a rail inside the roll, it is possible to provide a change in the center of gravity of the body unit through the movement of the weight.

Second, by arbitrarily changing the position of the weighting unit, the center of gravity of the body unit can be arbitrarily changed.

Third, the number of each surface of the body unit in contact with the ground can be presented to the counting unit.

Effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view of a polygonal rolling aid system for cognitive development according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of the balance unit of the polygon roll teaching aid system for cognitive development according to an embodiment of the present invention.
Figure 3 is a second cross-sectional view of the balance unit of the polygon roll for the cognitive development according to an embodiment of the present invention.
Figure 4 shows the inside including the lead part and the magnetic part of the polygonal roll teaching aid system for cognitive development according to an embodiment of the present invention.
Figure 5 is a diagram illustrating that the counting has occurred in contact with the magnetic part of the lead part of the polygonal rolling parish system for cognitive development according to an embodiment of the present invention.

Polygonal roll teaching aid system for cognitive development according to the present invention can apply various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

1 is a perspective view of a polygonal rolling aid system for cognitive development according to an embodiment of the present invention. Figure 2 is a cross-sectional view of the balance unit of the polygonal roll teaching aid system for cognitive development according to an embodiment of the present invention. Figure 3 is a second cross-sectional view of the balance unit of the polygon roll teaching aid system for cognitive development according to an embodiment of the present invention. Figure 4 shows the inside including the lead part and the magnetic part of the polygonal roll teaching aid system for cognitive development according to an embodiment of the present invention. Figure 5 is a diagram illustrating that the counting has occurred in contact with the magnetic part of the lead part of the polygonal rolling parish system for cognitive development according to an embodiment of the present invention.

In the case of a polygonal roll teaching aid system for cognitive development according to the present invention, as shown in FIG. 1, as it relates to a teaching aid for cognitive development, a body unit (100), a mark unit (mark unit, 200), It will include a balance unit (balance unit, 300).

In the case of the body unit 100, as shown in Fig. 1, the cross section is polygonal, the body is formed in the longitudinal direction, and when one surface is in contact with the ground horizontally, the other surface is horizontal to the ground in a different direction. .

The body unit 100 may have a polygonal cross-section such as a hexagon or an octagon, and the cross-section in the embodiment of the present invention is a hexagon.

As shown in Fig. 1, the body unit 100 has one surface in contact with the ground so that the other surface faces the sky in a direction symmetrical thereto, and the other surface of the body unit 100 in the sky direction is viewed as a result. will become

The body unit 100 has a large number of times of contact with the ground when the user provides a roll, and an impact is applied to the teaching tool when forming contact with the ground, and the material is a material with high strength against impact such as wood, plastic, rubber, etc. It is preferable to consist of

In the case of the mark unit 200, it is fixedly attached to each surface of the body unit, and is configured to display a predetermined value.

As shown in Figure 1, the mark unit 200 is provided in a fixed form to the body unit 100, so as not to be separated or damaged by a user's arbitrary operation, the material is a rigidity of coding paper, cloth, etc. It is preferable to have

In the case of the balance unit 300, it is formed inside the body unit, and is configured to provide a change in the center of gravity on the cross-section of the body unit.

As shown in Figures 2 to 3, the balance unit 300 is provided inside the body unit 100 and provides a change in the center of gravity of the body unit 100 at any one point in the inside, so the inside is provided in the center or close to the center in the body length direction of the body unit 100, provided on the side of the body unit 100 as needed, so that the user can visually see the balance unit 300 may be configured.

In the case of the mark unit 200 of the polygonal roll teaching aid system for cognitive development according to the present invention, as shown in FIG. 1, it is provided fixedly attached to each side of the body unit 100, and a predetermined value is the body unit (100) to be different for each side, and the sum of a pair of mutually symmetrical surfaces is configured to coincide with each other.

The predetermined value may be displayed in numbers, letters, dots, Korean, Chinese characters, etc., where the predetermined value means a number, and is provided differently on each side with dots, Arabic numerals, Chinese characters, etc., which mean numbers. , for example, if the surface in contact with the ground is 1, the symmetrical surface is 6 and the sum is 7, so the sum of the other surface and the symmetrical surface of the surface is also 7, so that each pair of surfaces is the sum This is the configuration to match.

That is, when the value of the mark unit 200 is provided in order along each side of the body unit 100, the user can expect the value, the mark unit 200 provides various values for the teaching aid. It is possible to maximize the use of and influence cognitive development.

The balance unit 300 of the polygonal roll teaching aid system for cognitive development according to the present invention may include a rail unit 310 and a weighting unit 320 .

In the case of the rail part 310 , as shown in FIGS. 2 to 3 , a rail is formed on the inner end surface of the body unit 100 .

In the case of the rail unit 310, both ends of the rail may meet each other to form a single circle, and may be formed in a spiral or radial shape where both ends do not meet each other. Due to the shape of the various rails, the movement direction of the body unit 100 and It is a configuration in which the center of gravity changes.

In the case of the weighting part 320, it is provided on the rail part 310, and is arbitrarily moved along the rail part 310 to form a change in the center of gravity on the cross-section of the body unit.

2 to 3 , the weighting unit 320 has a predetermined weight and changes the center of gravity of the body unit 100 in the direction in which it moves, and according to the movement of the weighting unit 320 , It is a configuration having a function of changing the movement of the body unit (100).

In the case of the weighting unit 320, it continuously provides movement in the direction to move according to the inertia and moves according to its weight and speed. For example, as shown in FIG. 2, when the rail unit 310 forms a circle In this case, the weighting part 320 moves along a circle, and when the body unit 100 moves, the weighting part 320 moves along the rail forming a circle, and the weighting part 320 is the body unit 100 of the It will provide a continuous center of gravity change from the inside.

The movement of the weighting unit 320 may be different depending on the force and direction provided by the user, and is configured to provide movement according to inertia in the direction in which the user applies the force.

That is, the movement of the weighting unit 320 increases the probability that different numbers can come out from the mark unit 200, and increases the uncertainty of the numbers that can come out to provide a variety of teaching aids.

In the case of the rail part 310 of the polygonal rolling teaching aid system for cognitive development according to the present invention, it is provided on the inner cross section of the body unit 100, so that the flow of the weighting part 320 along a predetermined depth is possible.

As shown in Figures 2 to 3, the rail portion 310 allows the weighting portion 320 to move along a predetermined depth, where the predetermined depth is the weighting portion 320 that can freely move. It is defined as having a depth that is slightly larger in diameter than the weighting unit 320 to the extent that it does not interfere with the movement of the weighting unit 320 when the weighting unit 320 moves along the rail unit 310 . It is desirable to have a depth of

In the case of the counting unit 110 of the polygonal roll teaching aid system for cognitive development according to the present invention, it is disposed on at least one of one side or the other side of the body unit 100, to present the number of rolls of the body unit 100 do.

4 to 5 , in the case of the counting unit 110 , the body unit 100 counts the number of rolls, and details thereof will be described later.

In the case of the counting unit 110 of the polygon roll teaching aid system for cognitive development according to the present invention, it may include a counting unit 111 and a display unit 112 .

In the case of the counting unit 111 , it is provided to the body unit 100 so that when the roll of the body unit 100 is provided, the number of rolls of the body unit 100 is presented.

In the case of the display unit 112 , it is interconnected with the counting unit 111 to be provided and exposed on one side or the other side of the body unit 100 , and the rolling of the body unit 100 measured by the counting unit 111 . number will be displayed.

In the case of the counting unit 111 , as shown in FIGS. 4 to 5 , the count is displayed on the display unit 112 , and when the body unit 100 is rolled, the number increases.

1 and 4, in the case of the display unit 112, it is provided on the body unit 100 and exposed to the outside, and is provided on the outside of one side or the other side so that the user can visually confirm it. is the composition

The display unit 112 indicates the number of rolls presented by the counting unit 111 , and as shown in FIG. 5 , an increase in the number is indicated by Arabic numerals to be provided to the user.

In the case of the counting unit 110 of the polygon roll teaching aid system for cognitive development according to the present invention, in interconnection with the display unit 112, the roll of the body unit 100 is provided so that each side of the body unit 100 is It counts the number of contact with the ground and presents it to the display unit 112 .

As shown in Figures 4 to 5, the counting unit 110 is one roll when one surface of the body unit 100 is in contact with the ground, so that each surface of the body unit 100 is in contact with the ground. Each time, the number of rolls is counted and displayed on the display unit 112 .

In the case of the button part 113 of the polygonal rolling aid system for cognitive development according to the present invention, it is formed in the body unit 100, and the counting number of the display unit 112 is initialized to 0 by the user's operation. to be.

1 and 4 to 5, the button unit 113 is formed on the outside of the body unit 100 together with the display unit 112, and the display unit 112 due to a user's arbitrary operation. ), it is desirable to be able to initialize the counting number.

It is initialized by the user when the roll of the parish ends, and the initialization is maintained until the roll occurs by the next use, and when the roll occurs by the user, counting starts from the moment when one surface of the body unit 100 and the ground contact It is preferable to be

In the case of the rail part 310 of the polygonal rolling teaching aid system for cognitive development according to the present invention, the position of the weighting part 320 is arbitrarily changed along the rail to variably form the moment of inertia of the body unit 100. to be.

2 to 3 , the rail unit 310 provides a switch S in at least one space, and the switch S limits the movement range of the weighting unit 320 .

For example, as shown in FIG. 3 , when the weighting unit 320 moves along the rail of the rail unit 310 , the weighting unit 320 due to the switch S is located in the space where the switch S is now. The movement to space is limited and the movement limit of the weighting unit 320 is transmitted to the body unit 100 , which has a function of limiting the rotational movement of the body unit 100 .

Energy for the movement of the weighting unit 320 appears as the moment of inertia of the body unit 100. When the movement of the weighting unit 320 is restricted due to the switch S, the moment of inertia of the body unit 100 is variable. , and a change also appears in the rotational motion of the body unit 100 .

That is, the moment the weighting unit 320 meets the switch (S) and changes the moving direction, there is also a change in the rotational direction of the body unit 100, and the change in the rotational direction functions to provide various results to the user. Provides diversity in the use of parishes.

In the case of the counting unit of the polygonal roll teaching aid system for cognitive development according to the present invention, it is a configuration including a lead unit 114 and a magnetic unit 115 .

It is preferable that the switch (S) is connected from the outside to the weighting unit 320 so that it can be arbitrarily adjusted by the user from the outside.

In the case of the lead part 114, it is disposed inside the body unit 100 and is formed of two terminals spaced apart from each other in parallel.

As shown in FIG. 4 , the lid part 114 is fixed in a form that depends on a fixing device inside the body unit 100 , and when the body unit 100 provides movement, as shown in FIG. 5 , , one surface of the body unit 100 is in contact with the ground, and the lead part 114 is moved by gravity from the inside to move toward the surface in contact with the ground.

In the case of the magnetic part 115, it is disposed on each side of the body unit 100, and when each side of the body unit 100 is in contact with the ground, the lid part 114 is temporarily brought into contact with each other in an overlapping state. carry out

In the case of the lid part 114, a small spring or elastic device (not shown) in order to perform the function of the lid part 114 falling after mutual contact with the magnetic part 115 disposed on one surface of the body unit 100. may include.

4 to 5, the magnetic part 115 is disposed on each side, and when one side of the body unit 100 is in contact with the ground, the lead part 114 moves toward the surface in contact with the ground and moves toward the ground. It is a configuration in contact with the magnetic portion 115 disposed on the surface in contact with.

At this time, the magnetic part 115 and the lead part 114 maintain a predetermined contact state, and the predetermined contact state is to maintain a contact state in which two terminals of the lead part 114 spaced apart from each other are in contact with each other. , it is preferable that the number of rolls does not change when the predetermined contact state is maintained.

In addition, when the magnetic part 115 and the lead part 114 are out of a predetermined contact state, the lead part 114 is brought into contact with the magnetic part 115 on the other side through a resilient device. It is desirable to be separated from the state.

Thereafter, as shown in FIG. 5 , the lead part 114 is always spaced apart, and when the lead part 114 comes into contact with the magnetic part 115 , the two terminals of the lead part 114 also temporarily overlap each other. to be.

In the case of the counting unit 110 of the polygonal rolling parish system for cognitive development according to the invention, the lead unit 114 has a characteristic of counting the number of times overlapped temporarily by the number of rolls.

As shown in FIG. 5 , the lead portion 114 moves in the direction of gravity toward the surface in contact with the ground among the surfaces of the body unit 100 , and comes into contact with the magnetic portion 115 disposed on each surface. In addition, the two terminals spaced apart from each other of the lead part 114 overlap each other and counting occurs, and this is provided as a number to the display unit 112 so that the user can confirm that one roll has occurred. .

The lead part 114 counts the number of times of temporary contact with the magnetic part 115. When the body unit 100 does not contact the ground and one side contacts the ground, the gravity direction of the lead part 114 is one. Since it faces to the side, it is impossible to contact the magnetic part 115 , so it is not formed by one counting.

As shown in FIG. 5 , the lead part 114 is configured such that the lower part of the lead part 114 and the front surface of the upper part of the magnetic part 115 contact each other so that one counting occurs.

For example, when the direction of the lead part 114 faces one side or the other side of the body unit 100 , only a portion of the lower part of the lead part 114 comes into contact with the magnetic part 115 and counting does not occur.

That is, only when the body unit 100 is parallel to the ground and the lower part of the lead part 114 and the upper front surface of the magnetic part 115 contact each other, the two terminals of the lead part 114 overlap each other to provide counting. configuration to be made.

The scope of the present invention is determined by the matters described in the claims, and parentheses used in the claims are not described for selective limitation, but are used for clear components, and descriptions in parentheses are also interpreted as essential components. should be

S: switch
100: body unit
110: counting unit
111: counting unit
112: display unit
113: button unit
114: lead part
115: magnetic part
200: mark unit
300: balance unit
310: rail unit
320: waiting part

Claims (10)

a body unit having a polygonal cross-section, the body is formed in a longitudinal direction, and the other surface is formed horizontally with the ground in a different direction when one surface is in contact with the ground horizontally;
a mark unit fixedly attached to each side of the body unit and displaying a predetermined value; and
Formed in the interior of the body unit, characterized in that it comprises a balance unit (balance unit) to provide a change in the center of gravity on the cross-section of the body unit, Polygonal rolling aid system for cognitive development.
According to claim 1, wherein the mark unit,
It is provided by being fixedly attached to each side of the body unit, and the predetermined value is different for each side of the body unit, and the sum of a pair of mutually symmetrical faces coincides with each other. Polygonal rolling parish system for.
According to claim 1, The balance unit,
a rail portion forming a rail on the inner end face of the body unit; and
It is provided on the rail portion, characterized in that it comprises a weighting portion for arbitrarily moving along the rail portion to form a change in the center of gravity on the cross-section of the body unit, polygonal rolling teaching system for cognitive development.
According to claim 3, The rail portion,
A polygonal rolling system for cognitive development, characterized in that it is provided on the inner cross section of the body unit to enable the weighting portion to flow along a predetermined depth.
According to claim 4, wherein the body unit,
It is disposed on at least one of one side or the other side, characterized in that it comprises a counting unit presenting the number of rolls of the body unit, Polygonal roll teaching aid system for cognitive development.
According to claim 5, wherein the counting unit,
a counting unit provided in the body unit to indicate the number of rolls of the body unit when the rolls of the body unit are provided; and
Cognitive development, characterized in that it is provided on one side or the other side of the body unit interconnected with the counting unit and exposed, and includes a display unit displaying the number of rolls of the body unit measured by the counting unit. Polygonal rolling parish system for
The method of claim 6, wherein the counting unit,
Polygonal rolling system for cognitive development, characterized in that by interconnecting with the display unit, the roll of the body unit is provided, counting the number of each surface of the body unit in contact with the ground, and presenting it on the display unit .
The method of claim 7, wherein the counting unit,
Polygonal rolling system for cognitive development, characterized in that it is formed on the body unit and comprises a button unit for initializing the counting number of the display unit to 0 by a user's operation.
According to claim 3, The rail portion,
Polygonal rolling system for cognitive development, characterized in that the moment of inertia of the body unit is variably formed by arbitrarily changing the position of the weighting part along the rail.
The method of claim 8, wherein the counting unit,
a lead portion disposed inside the body unit and formed of two terminals spaced apart from each other in parallel; and
and a magnetic portion disposed on each side of the body unit, and temporarily contacting the lead unit in a state of overlapping with each other when each side of the body unit is in contact with the ground,
The counting unit,
Polygon rolling system for cognitive development, characterized in that counting the number of times the lead part is temporarily overlapped with the number of rolls.

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