JP2933516B2 - Educational toys - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention can be used not only for performing various types of shaping, such as a plurality of squares, by combining blocks, but also for proving the Pythagorean theorem of geometry. Related to educational toys for use.

[0002]

2. Description of the Related Art "Blocks" are well known as a method for preparing children of various shapes by preparing blocks of various shapes and allowing them to freely perform various forms by appropriately combining them. I have. However, although the building blocks are useful for education only in the area of modeling, there was nothing that proved Pythagorean theorem using the building blocks.

[0003] In Japan, the world's leading technology nation, the recent appreciation of the yen calls for hollowing out of industry, and the stagnation of technology is severe. In addition, the number of young people who choose science and engineering science in response to the world climate is rapidly decreasing. However,
In Japan, where there are no remarkable resources other than human resources, the hollowing out of industry and the decline in technical standards are expected to cause serious problems in Japan in the future. Education for science and technology
It is reaching a point where it is no longer feasible to justify cramming education such as studying for entrance exams.

[0004] Since the Meiji Restoration, it has been the nation's policy to quickly reach the scientific standards of advanced European and American powers, and education has been strongly promoted in accordance with this policy. He studied foreign languages only to read the literature of developed countries, conducted packed education based on harsh competition principles to understand advanced technology, and finally gained the national strength in some fields until he surpassed advanced powers. It came to be attached.

[0005] However, in Japan, where the example is no longer available, it is clear that past educational methods will never be able to maintain their position as a technology nation in the future. Unless Japan has to show its own originality and continue to ask the world for high-value-added products that are not available in the world, Japan will face emerging Asian nations in a pattern (low cost and high quality) where Japan once challenged advanced powers and won. There is no doubt that the day will be overthrown by.

[0006]

In order to break through the current tide of Japan, children should learn the basics of science and technology through play while having fun and knowingly from childhood, and have a dislike of science and technology. In addition, it is necessary to eliminate the feeling of repellency, and here, the educational toy of the present invention is such that the Pythagorean theorem, which is the basis of geometry, can be understood through toys.

[0007]

The educational toy (A) of claim 1 of the present invention comprises: a square block (1) having a square front shape and a side length of 2; The length of the other two sides that sandwich the right angle at 2 is (2 /
Right triangle block with square root 5) and (4 / square root 5)
(2), two adjacent corners are right angles, the length of a side interposed between the two right angles is (4 / square root 5), and the length of a short side connected to one of the right angles is ( 3 / square root 5), the length of the long side connected to one of the other right angles is (square root 5), and the length of the opposite side between the two right angles is 2 Block (3), one of the longest sides of the two sides sandwiching the right angle is 3 and the other shortest side is 1, the diagonal of the right angle is also a right angle, and the length of the two sides sandwiching the diagonal Are composed of the same second rectangular block (4). "Claim 2" is that "one square block (1), four right-angled triangle blocks (2), It comprises four rectangular blocks (3) and four second rectangular blocks (4). "

The Pythagorean theorem is well known as "the square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides", and is one of the basic theorems of geometry. Pythagoras's theorem is now being taken up as a subject in junior high school, but it is desirable to master such basic theorem at a young age as much as possible. If you can't master it in junior high school, you'll accelerate away from science.

When the educational toy (A) of the present invention is used, the square that can be combined is 7 squares as shown in FIG. 1 and FIGS.
There is a street. Figure 1 shows the most complex case, using one square block (1), four first rectangular blocks (3), four second rectangular blocks (3) and four right triangles (2) FIG. 3 shows the case where four right triangles (2) are used, and FIG. 4 shows one square block.
FIG. 5 shows a case where four right-angled triangles (2) are arranged and formed around (1), and FIG. 5 shows a case where four first rectangular blocks (3) are used. FIG. 7 shows a case where four second rectangular blocks (3) are formed using four square blocks (3) arranged around one square block (1). FIG. 8 shows the first rectangular block.
This is a case where four (3) and four second rectangular blocks (3) are used.

Next, to prove the Pythagorean theorem (three types) with the educational toy (A) of the present invention, the following is performed. FIG.
As shown in Fig. 4, it can be proved by arranging the square of Fig. 4 on the hypotenuse of the right triangle (a) to be proved, and placing one rectangular block (1) and the square of Fig. 3 on the other two sides. In the case of FIG. 10, the square of FIG. 7 is arranged on the oblique side of the right triangle (b) to be proved, one rectangular block (1) is arranged on the short side, and the square of FIG. 6 is arranged on the remaining sides. In the case of FIG. 11, a right triangle to be proved
This can be proved by arranging the square of FIG. 8 on the oblique side of (a) and the square of FIG. 5 and the square of FIG. 6 on the other two sides. Thus, the educational toy of the present invention (A)
According to, there are many ways to prove the Pythagorean theorem and squares and never get bored.

Further, the toy can be used for modeling as well. For example, the toy can be formed into a "windmill" shape as shown in FIG. Of course, various shapes can be made by inventing a combination method and a stacking method, and by this, it is possible to naturally acquire the fun for modeling and the Pythagorean theorem from an early childhood without knowing it, You can deepen your interest in science in higher grades.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The educational toy (A) of the present invention has the combination shown in FIG.
The set is composed of one square block (1), four first rectangular blocks (3), four second rectangular blocks (3), and four right triangles (2). Each component according to the present invention
Although any of the materials (1) to (4) may be used, a plate made of wood or plastics is generally considered. In addition, although a thick three-dimensional shape may be considered, in this case, the hollow shape is generally used for weight reduction. Of course, it may be a solid entity. In this specification, the side length of each of the constituents (1) to (4) is represented by a ratio. Therefore, it is possible to freely form a large material to a small material according to the material.

The square block (1) has a square front shape, and the length of one side is 2 in proportion to the length of each side of the other components (2), (3) and (4). The right-angled triangle block (2) has a hypotenuse whose length is the same as one side of the square block (1) and is 2 and the other two sides sandwiching the right angle have (2 / square root 5) and (4 / Square root 5). The first rectangular block (3) is a trapezoid in which two adjacent corners are right angles, the length of a side sandwiched between the two right angles is (4 / square root 5), and a short side connected to one of the right angles Is (3 / square root 5),
The length of the long side connected to one of the other right angles is (square root 5), and the length of the opposite side between the two right angles is 2
It is. In the second rectangular block (4), two diagonals are right angles, and one longest side of two sides sandwiching one right angle is 3,
The other shortest side is 1, and the two sides sandwiching the other diagonal (= right angle) are formed so as to have the same length (square root 5).

One set of this educational toy (A) can be used to form seven types of squares as shown in FIG. 1 or FIGS. That is, in the case of FIG. 3, a rectangle of 1: 2 is formed by combining the hypotenuses of two right-angled triangles (2), and the long sides of the two rectangles are formed together. In the case of FIG. 4, the oblique sides of the right triangle (2) are formed around one square block (1). In the case of FIG. 5, the oblique sides (side length = 2) of the two first rectangular blocks (3) are combined to form a 1: 2 rectangle, and the long sides of the rectangle are further combined. In FIG. 6, two sides of the second rectangular block (3) having the same side length (= square root 5) are formed together.
FIG. 7 shows that the longest side of the second rectangular block (4) is aligned around one square block (1), and the portion protruding from the longest square block (1) of the second rectangular block (4) is adjacent to the square block (1). It is formed by matching the shortest side of the second rectangular block (4) to be formed. FIG. 8 shows a second rectangular block (4) arranged like a windmill with the right-angled portion on the short side (side length = 1) side as the center, and the first rectangular block between the second rectangular blocks (4).
(3) is arranged. FIG. 1 shows that the oblique side of the first rectangular block (3) is aligned around the square block (1), and then the shortest side (= 3 / square root 5) of the first rectangular block (3) and the first rectangular block adjacent thereto The second rectangular block (4) is fitted between the longest side (= square root 5) of the block (3) and the equal side (= square root 5) of the second rectangular block (4) is set to the shortest of the first rectangular block (3). The side (= 3 / square root 5) and the longest side (= square root 5) of the first rectangular block (3) adjacent thereto are set to be in contact. Finally, two sides of the right triangle (2) sandwiching the right angle are fitted so as to contact the first rectangular block (3) and the second rectangular block (4) to complete a square.

Also, as shown in FIGS.
Using one or more sets of (A), Pythagorean theorem 3
You can prove it. Other components as shown in FIG.
Various modeling can be performed by appropriately combining (1) to (4). As a result, you can learn the fun of modeling and Pythagorean theorem naturally from childhood without knowing it,
It will be very useful to deepen your knowledge of science sciences. In particular, you can make the square and Pythagorean theorem any number of ways, so you never get bored.

[0016]

The educational toy according to the present invention can be used not only for modeling but also for proof of Pythagorean theorem by combining them, and the basics of science-related science can be unknowingly known from childhood. You can learn.

[Brief description of the drawings]

FIG. 1 is a front view of a combination example of a set of educational toys of the present invention.

FIG. 2A is a front view of a structure (square block) of the educational toy of the present invention. (b) Front view of the constituent body (right-angled triangular block) of the educational toy of the present invention. (c) ... Constitution of educational toy of the present invention (first rectangular block)
FIG. (d) ... Constitution of educational toy of the present invention (second rectangular block)
FIG.

FIG. 3 is a front view of a square formed by using four right-angled triangular blocks of the educational toy of the present invention.

FIG. 4 is a front view of a square formed by using four square blocks and four right-angled triangular blocks of the educational toy of the present invention.

FIG. 5 is a front view of a square formed by using four first rectangular blocks of the educational toy of the present invention.

FIG. 6 is a front view of a square formed by using four second rectangular blocks of the educational toy of the present invention.

FIG. 7 is a front view of a square formed by using four square blocks and four second rectangular blocks of the educational toy of the present invention.

FIG. 8 shows a first rectangular block and a second rectangular block of the educational toy of the present invention.
The front view of the square formed using four rectangular blocks each.

FIG. 9 is a front view of a combination example when the Pythagorean theorem is proved by the educational toy of the present invention.

FIG. 10 is a front view of another example of a combination when proving Pythagorean theorem with the educational toy of the present invention.

FIG. 11 is a front view of still another example of a combination for proving Pythagorean theorem with the educational toy of the present invention.

FIG. 12 is a front view when the educational toy of the present invention is combined with a windmill type.

[Explanation of symbols]

 (1) Square block (2) Right triangle block (3) First rectangular block (4) Second rectangular block

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A63F 9/10 501 A63H 33/00 302 A63H 33/04 G09B 23/04

Claims (2)

(57) [Claims] 1. A square block having a square front shape and a side length of 2, and two other sides sandwiching a right angle with a hypotenuse length of 2 are (2 / square root 5) and (4 / square root). 5) is a right-angled triangle block, and two adjacent corners are right angles;
The length of the side between the two right angles is (4 / square root 5)
And the length of the short side connected to one of the right angles is (3 /
A first rectangular block having a square root 5), a length of a long side connected to one of the other right angles is (square root 5), and a length of an opposite side between two right angles is 2; A second rectangle in which one of the longest sides of the two sides sandwiching the right angle is 3 and the other shortest side is 1 and the diagonal of the right angle is also a right angle and the lengths of the two sides sandwiching the diagonal are equal. Educational toys characterized by being composed of blocks. 2. The intellectual training according to claim 1, wherein one square block, four right-angled triangle blocks, four first rectangular blocks, and four second rectangular blocks are provided. toy.