JPS63109490A - Multiplication teaching tool - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a teaching tool that allows children to memorize multiplication while linking the concept of number to the concept of quantity.

(Prior Art and Purpose of the Invention) Until now, K for teaching children multiplication in elementary schools, etc.
It is common practice to have children memorize a list of formulas for 9●9, but this method does not allow children to fully understand the concept of numbers by simply cramming the numbers together mechanically. Moreover, it is monotonous and cannot interest the children.

Therefore, it is an object of the present invention to provide a teaching tool that allows children to naturally memorize the concept of numbers by linking numbers and quantities, and at the same time allows children to easily memorize multiplication with interest.

(Means for solving the problem) Based on the above object, the present invention provides a first marking body (mark).
and a second marking body (numbers), and horizontal and vertical cursors in the form of vertically and horizontally long opaque thin plates with transparent parts at specific locations, and the horizontal and vertical cursors can be moved as appropriate. A multiplier/multiplicand is slidably disposed on the base plate, and when an arbitrary cursor is slid from the basic state to the calculation state, the transparent part where the horizontal cursor and vertical cursor are superimposed will be placed on the base plate. 1st of
, and display a second mark on the base plate at the intersection of the gap created between the basic state of the horizontal cursor and the vertical cursor and the cursor in the calculation state. The present invention is characterized in that the result of multiplication by the field is displayed, and the number and amount of the calculation result are displayed at the same time.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the main parts of this invention separately. Reference numeral 1 denotes a rectangular board, and a small display board 2, which is also rectangular in shape and has its top and right sides aligned, is mounted on the board. ,
At the lower left corner, a double-sided stopper 3a is provided which aligns the vertical inner surface and the horizontal inner surface with the left side and lower side of the display board 2 and serves as a reference for the 20 squares of the display board. As shown, a vertical stopper 3b is fixed to the upper left corner, a horizontal stopper 3C is fixed to the lower right corner, and a guide rail 4a is fixed between the double-sided stopper 3a and the vertical and horizontal stoppers 3b and 3C. .

4b is installed.

On the display board 2, except for the upper and right side parts of a constant width, there are 1 piece (9 x 2 + 1) in both the vertical and horizontal directions.
It is divided into 9 equal parts to form 361 squares. A first symbol (mark) a, which is a black dot, is displayed at the position of the square, and a second symbol (mark) b, which follows a certain rule, is displayed in odd-numbered squares in the vertical and horizontal rows. If X is the odd-numbered square position in the horizontal direction counting from the double-sided stopper 3a, and y is the odd-numbered position in the vertical direction, then b=
(x-1)÷2X(y-1)÷2. In other words, if X=3.7=3, then b=(3-1)÷2X(3
-1)÷2 becomes 1, and the number 1 is displayed in the third vertical and horizontal intersection with the double-sided stopper 3a as the origin, and similarly x=11. At the position of y=9, b=(11-1)÷2X
The number 20 is displayed (9-1)÷2. 5 is one of the X cursors arranged vertically and horizontally, and the width is equal to the width of the second column of the 20th square of the display board, and the length of the vertical column plus the mounting allowance 5C is an opaque cursor. Consisting of strips,
A slider 5a is attached to the lower end of the strip plate through a gap 5C and engages with a guide rail 4b installed between the left and right stoppers 3a and 3C on the board 1, and a slider 5a is attached to the right half of the strip plate in the vertical direction. Transparent portions 5b (which may be cutouts, nine in total) having the same size as the squares are provided at positions corresponding to even-numbered squares in the vertical columns of the display board 2.

6 is one of the Y cursors arranged horizontally and vertically, and the width is equal to the second row of the 20th square of the display board, and the opaque length is the length of the horizontal row plus the mounting allowance 6C. It is a strip plate, and the upper and lower stoppers 3b on the board 1 are attached to the left end through the gaps 6C.

A slider 6a that engages with a guide rail 4a installed between 3a is attached, and a square is installed in the upper half of the strip in the lateral direction at a position corresponding to an even-numbered square in the horizontal row of the display board 2. Transparent portions 6b (9 pieces in total) having a size equal to 1 are provided.

Reference numeral 7 denotes a cover such as a glass plate 7a that is placed on the display panel 2.

First, place the X cursor 5 on the display board 2 by the required number (the number that leaves one square width between the stopper on the opposite side when it is brought to either the left or right stopper side, in the example shown) 9), the slider 5a at the lower end is placed horizontally in parallel while engaging with the guide rail 4b, and then the same number of Y cursors 6 are placed on top of it in the same way as the X cursor. are assembled in the manner shown in FIG. 2 by setting them vertically in parallel while engaging with the guide rails 4a, and fitting the cover 7 thereon. In this case, X calf/
The vertical relationship between 115 and the Y cursor 6 may be reversed.

In FIG. 2, the entire X cursor 5 is brought to the side of the right stopper 3C, and a gap of one square width is formed between it and the double-sided stopper 3a on the left side, and the surface of each slider 5a has a width of 1 to 90 mm.
The multiplier and arrow indicating the direction of movement are displayed, and the Y
The entire cursor 6 is moved toward the upper left stopper 3b, and a gap of one square width is placed between it and the lower left double-sided stopper 3a, and the surface of each slider 6a has a multiplicand and an arrow indicating the direction of movement. Displayed.

Figure 3 shows the display board 2 and the X cursor 5 in the state shown in Figure 2.
Cover 7 to make it easier to understand the relationship between
This is shown with a part of the X and Y cursors 5.6 removed, and in this state, as is clear from the figure, the mark a of the even-numbered squares on the display board 2 is also the number of the odd-numbered squares of the vertical and horizontal directions. Both plums are covered with the opaque parts of the X cursor/L15 and the Y cursor 6 and are not visible to the outside. Therefore, in this state, even if only one side of the X%Y cursor 5.6 is moved, the mark a and the numeral will not appear outside.

By the way, for example, the X cursor 5 displayed once and the Y cursor 6 displayed once are moved by their sliders 5a.

Pinch 6a and slide it in the direction of the arrow to remove the double-sided stone.
<3a, the bottom transparent part 5b of the X cursor 5 and the leftmost transparent part 6b of the Y cursor 6 overlap as shown in Figure 74A, and one black dot mark a is visible from the outside. At the same time, the square part diagonally to the upper right of the trap mark a appears as a gap between it and the adjacent cursor 5.6, and the number 1 displayed there can be seen through, which means that lX1=1 Indicates the status of

In this state, if you slide the 2-display X and Y cursors 5.6 in the direction of the arrow by the width of one cell (this is the same even if you slide the 2-display cursors at the same time), you will see the K The four transparent parts 5b and 6b are filtered to reveal four black dots a, and at the same time, a square with the number 4 displayed between it and the adjacent cursor diagonally to the upper right appears. This shows the state of 2X2=4.

K like this, 4 rows of black dot marks of 3 in 1 row, 1 in total.
Figure 5 shows two black dot marks and at the same time the number 12, which is the answer, in the space diagonally above and to the right of the black dot marks to indicate the meaning of 3X4=12.

(Effects of the Invention) As described above, according to the present invention, a certain number of squares are formed on the display board on the substrate, marks are applied to the even-numbered squares vertically and horizontally from the reference stopper, and marks are placed on the odd-numbered squares. displays numbers according to a certain rule, and on the display board, the required number of X cursors with transparent parts at predetermined positions in the vertical direction are arranged in parallel in the horizontal direction, and the required number of X cursors with transparent parts at predetermined positions in the horizontal direction are arranged in parallel horizontally. The Y cursor can be used vertically and the XY cursor can be slid by one square width, so the user can move the desired number of X
By sliding the cursor and Y cursor toward the double-sided stopper side, a mark equal to the sum of the number of X cursors and the number of Y cursors that have been slid can be displayed, and the number of answers can be displayed at the same time. is possible,
It helps children to understand the meaning of the number as an area or quantity, rather than just the numerical value of the multiplication result, which helps improve their intellectual education.It also makes multiplication easier while having fun operating the cursor and changing the display on the display board. can be made to remember.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the main parts of this invention. FIG. 2 is a perspective view of the assembled state. FIG. 3 is a perspective view showing the relationship between the display board and the X and Y cursors. FIG. 4 A is an explanatory diagram showing how marks and answer numbers are displayed by sliding the X and Y cursors. FIG. 5 is an overall perspective view showing the result of multiplication. In the figure, 1... Board 2... Display board 3a... Double-sided stoppers 3b, 3c... Vertical and horizontal stoppers 4a,
4b...Guide rail 5...X cursor 5a...Slider 6...Y cursor 6a...Slider 7...Cover -a
・・・・・・Mark b・・・Number Patent applicant Kawai Musical Instruments Co., Ltd. Agent
True 1) True - Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) First marking (mark) and second marking (number)
and a horizontal cursor and a vertical cursor in the form of vertically and horizontally long opaque thin plates with transparent parts at specific locations, and the horizontal cursor and vertical cursor are placed on the base plate as appropriate multipliers and multiplicands. When the arbitrary cursor is slidably arranged and is slid from the basic state to the calculation state, the multiplication result by the first symbol on the base plate is displayed on the transparent part where the horizontal cursor and the vertical cursor are overlapped. and display the multiplication result by the second marking body on the base plate at the intersection of the gap created between the basic state of the horizontal cursor and the vertical cursor and the cursor in the calculation state. , a multiplication teaching tool characterized by displaying the number and amount of calculation results at the same time. (2) The multiplication teaching tool according to claim 1, wherein the transparent portion of the cursor is a notch.