JPH0143733Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) Regarding practice devices for multiplication tables in early childhood education.

(Prior art) Conventional multiplication practice devices consist of a combination of a multiplier digit consisting of numbers 1 to 9, a multiplicand digit, and the answer digit of the multiplication, and the structure is made as simple and easy to use as possible. For example, in 1973-
The one shown in Publication No. 43467 is known.

In the publication, multiplicand numbers 2 to 9 are written in a column on one side of the base plate, a multiplication symbol is written on the right side of each multiplicand number, and eight nolens are written in a row on the right side of each multiplication symbol. A number of multipliers from 2 to 9 is written on the surface of each hanging piece, while a multiplier of the multiplicand written on the hanging piece is written on the base plate below each hanging piece. It shows the answer numbers.

This is because the answer number for multiplying the multiplicand by the multiplier is hidden under the flap, so after the child calculates it on their own, they can check whether the answer is correct by turning over the flap. .

However, when doing this, eight rows of vertical strips are attached to the base plate for each multiplicand number 2 to 9, making a total of 61 vertical strips arranged vertically and horizontally. There is an inconvenience that it is easy to make mistakes when finding and turning over the hanging pieces.

(Problems to be Solved by the Present Invention) The present invention eliminates such conventional inconveniences and provides a multiplication table practice device that can be operated extremely easily and reliably even by young children.

(Means for solving the problem) In order to solve the problem, the present invention has a
A storage case in which a plurality of transparent windows and a plurality of opening/closing windows each having a cover that can be opened and closed on one side edge are arranged in a row, and a multiplier number is written on the top surface of the cover, and a position that overlaps the transparent windows when inserted into the storage case. It consists of a plurality of cards, each of which has a multiplicand number written on it, and the answer number written by multiplying the multiplicity number on the top of the cover by the multiplicand number at each position that overlaps the opening/closing window, and the cards can be inserted into and removed from the storage case. It is made by inserting and combining.

(Embodiment) FIGS. 1 and 2 show an example of the implementation of the present invention, where A indicates a storage case and B indicates a card. The storage case A is made of cardboard and is a flat bag in which only the top of the card B is exposed and the card B can be inserted and removed from the opening 1 on one side. Transparent windows 3 were provided on the top plate 2 of the storage case A, arranged below the transparent windows 3, and two rows of a plurality of opening/closing windows 4 were further provided in parallel with this row.

Each opening/closing window 4 is provided with a cover 5 which can be opened and closed at one side edge and is formed loosely by a generally shaped cut line 6. The numbers 1 to 9, which is the multiplier number 7, are sequentially written on each cover 5.

On the other hand, card B has 8 cards as shown in the second diagram.
The card consists of _B1 to _B8 , and numbers 2 to 9, which is the multiplicity number 8, are written on each card _B1 to _B8 in sequence in a position that can be seen through the transparent window 3 when inserted into the storage case A. Each card B ₁ to _{B 8} is further provided with a multiplicable numeral 8 of each card B ₁ to _{B 8} and a cover 5 of the opening window 4, corresponding to the position below each opening window 4 when inserted into the storage case A. The answer number 9, which is multiplied by the multiplier number 7 written above, is written in correspondence with each cover 5.

Therefore, when practicing multiplication, for example, use a card whose multiplicity 8 is the number 3, as shown in Figure 1.
When B ₂ is inserted into the storage case A and the size is 3x2, the multiplier number 7 on the cover 5 is the number 2, and the answer number 9 is multiplied from the opening/closing window 4 by opening it as shown in the third diagram. The number 6 is visible. Similarly, by opening the cover 5 of each opening/closing window 4 while performing multiplication using the multiplier number 7 on each cover 5, the user confirms based on the answer number 9 whether his or her answer is correct.

Figures 4 and 5 show another embodiment of the present invention, in which the case A is formed into a flat box made of synthetic resin and has an opening 1 on one side for inserting and extracting the card B, as in the previous embodiment. Established.

A transparent window 3 is provided on the top plate 2 of the storage case A, and a cover 5 of the opening/closing window 4 is configured to be easily opened and closed. That is, the surface on which the opening/closing windows 4 are arranged is formed on the inclined surface 10, the cover 5 is formed by a plate piece having an L-shaped cross section, and the opening of the opening/closing window 4 is closed at one side 5a.
The root part is pivotally connected so that it can swing upwardly, and the fifth
One side 5a is connected to the other side 5b as shown by the imaginary line in the figure.
swung and stood up so that the answer number 9 of card B under the cover 5 could be seen through. Other configurations are the same as those of the previous embodiment.

(Effects of the present invention) As is clear from the above explanation, according to the present invention, one transparent window and a plurality of opening/closing windows each having a cover that can be opened and closed at one side edge are arranged in a row on the top plate, A storage case with a multiplier number written on the top surface of the cover, a multiplicable number on the position overlapping the transparent window when inserted into the storage case, and a multiplier number on the top surface of the cover multiplied by the multiplicable number at each position overlapping the opening/closing window. It consists of multiple cards with answer numbers written on them, and the cards are inserted into a storage case so that they can be freely inserted and removed. You can easily check whether the answer you calculated by multiplying by the multiplier written on the cover of the opening/closing window is correct by opening the cover, and you can also solve all multiplication tables just by replacing each card. It has the effect of providing a simple multiplication practice device with a structure that allows you to practice.

[Brief explanation of the drawing]

The illustrations show an example of the implementation of the present invention; FIG. 1 is a plan view thereof, FIG. 2 is a plan view of the card, FIG. 3 is a plan view of the card in use, and FIGS.
The figures show other embodiments, and Fig. 4 is a perspective view thereof, and Fig. 5 is a perspective view thereof.
The figure is a sectional view taken along the line -- in FIG. 4. A...Storage case, B...Card, 1...Opening, 2...Top plate, 3...Transparent window, 4...Openable window, 5
... Cover, 6 ... Cut line, 7 ... Multiplier number, 8 ...
Multiplicand digit, 9...Answer digit.

Claims (1)

[Scope of utility model registration request] A storage case with a transparent window and a plurality of opening/closing windows each having a cover that can be opened and closed on one side edge with a multiplier number written on the top surface of the cover, and a transparent window when inserted into the storage case. It consists of a plurality of cards with a multiplicity number written on the position that overlaps the window, and a number that is the result of multiplying the multiplier number on the top of the cover by the multiplicity number on each of the positions that overlap with the opening/closing window, and the cards are stored in a storage case. A multiplication table practice device that can be inserted and removed freely.