CN2128758Y

CN2128758Y - Sum-product arithmetic squares

Info

Publication number: CN2128758Y
Application number: CN 92217553
Authority: CN
Inventors: 刘芳明
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-07
Filing date: 1992-08-07
Publication date: 1993-03-24
Anticipated expiration: 2002-08-07

Abstract

The utility model relates to a sum-product arithmetic square, which comprises a box bottom, a border frame, slide blocks, a box cover, a tenon and a tenon groove which are mutually matched. The utility model is characterized in that the surface of each slide block is labeled with digitals, such as n1, n2, n3,., n100; the mathematical operations of addition, multiplication, power, geometric proportion, equal difference, etc., can be carried out by utilizing the digitals on the slide blocks and moving the slide blocks. The sum-product arithmetic square exercises people's intelligence, and combines flexibly mastering and applying mathematics knowledge into games and entertainments, having various methods for playing and infinite interests. The utility model edifies human elaborative faculty, is widely suitable for humans with different ages and levels, and is especially suitable for being used by each class of students.

Description

Sum-product arithmetic squares

The utility model relate to a kind of and with the long-pending apparatus that waits mathematics to use, belong to a kind of riddle, toys.

It is that secondary a picture is divided into the identical small slide block of some sizes that picture evil spirit plate is arranged now on the market, by changing the position of slide block, make original complete pattern entanglement, and then make it to restore to the original state by moving slider, playing method is relatively more dull, and has a slide block can not change the position arbitrarily on the magic plate.

The purpose of this utility model provide indicate according to certain rules on a kind of each slide block the numeral with long-pending magic square face, carry out mathematical operations such as addition, multiplication, power, equal difference, Geometric Sequence and permutation and combination by moving slider, playing method is various, interest is strong, makes the people of object for appreciation can use mathematical knowledge to carry out the intelligence exercise flexibly.

The utility model is to realize like this, have at one and to put into the slide block of same number of rows anyhow at the bottom of the box of three frames in the groove, leave a space on the limit in every line, so that slide block is switched the usefulness of position, be marked with on the numeral that meets certain rule, the box at slide block and be printed on the explanation of playing method, and a plug-type lid is arranged.

Be further described hereinafter with reference to embodiment of the present utility model and accompanying drawing thereof.

Accompanying drawing 1 is and long-pending magic square face three-dimensional structure diagram

Detailed description of main elements:

1,2,5 tenons 3, tongue-and-groove 4, bound feet 6, space 7, tongue-and-groove 8, slide block 9,11, frame 10, cover plate at the bottom of the box.

Referring to accompanying drawing 1, slide block (8) is a square that tenon (5) and tongue-and-groove (3) are arranged, every shape size is identical, there is tenon (5) on adjacent two limits, there is tongue-and-groove (3) on two limits in addition, tenon and tongue-and-groove are worked in coordination, and the upper surface table of slide block indicates numeral, and four bound feets (4) are arranged on the bottom surface, three frames (9) are arranged on the box plate, on at the bottom of the box in the middle of it groove is arranged, just in time put down horizontal stroke in the groove, straight each ten row slide block, on a groove limit, leave the space of a slide block in every line, so that move and change the usefulness of the position of slide block, tenon (2) and the tongue-and-groove that matches with slide block arranged on four limits of groove, the degree of depth of groove is the same with slide block high.The tongue-and-groove (7) that cooperates with lid is arranged on the frame (9), have frame (11) on the limit of cover plate (10), after cover plate inserts the frame tongue-and-groove, just in time synthetic one has four frames and lid and long-pending magic square face box is arranged, can keep slide block can not scatter and disappear again, but also head-stamp playing method explanation etc. on lid.Institute's target numeral is n1, n2, n3 on the slide block ... n100, n are that natural number is represented power.

Playing method of the present utility model is various, utilizes numeral and moving slider on the slide block to carry out the calculating and the application of ordered series of numbers such as addition, multiplication, geometric ratio, equal difference.This magic square has 8 kinds of the fundamental types of a * a square formation of a=3～10, and kind and (amassing) surplus in the of 800 can be set between 15～540.

For a * a square formation of given a, can select different a1 and d, form identical and the multiple magic square that element is different of a, make it have identical and (amassing).

For example: 1, in the square formation of a=3, (a d) is respectively two magic squares of (1,2) and (5,1), and having identical is the tolerance of arithmetic progression with the 1st d of difference item such as (27) are horizontal, the identical a of Zhi Gehang is.

2, for identical a, a and d, the method for touching of children side is diversified (a 〉=4).

For example: a=4, a=1, young side's solution (with=34) of d=1.

This shows that the utility model can carry out multiple mathematical operation, temper people's intelligence, grasping flexibly and using mathematical knowledge to reside among the Entertainment, playing method is various, be of infinite interest, the elaborative faculty that can edify the people, the people who is widely used in all ages and classes and degree uses, and particularly the student of each grade uses.

Claims

1, a kind of and long-pending magic square face, comprise at the bottom of the box, frame, slide block and lid, the upper surface that it is characterized in that slide block (8) indicates numeral by rule, as n1, n2, n3 ... n100, the lower surface of slide block has four bound feets (4), there is tenon (5) on adjacent both sides, there is tongue-and-groove (3) on both sides in addition, tenon and tongue-and-groove are worked in coordination, fluted and three frames (9) are arranged at the bottom of the box, its groove is just in time put into the slide block of same number of rows anyhow, leave the space of a slide block in every line on one side of groove, the tenon and the tongue-and-groove (7) that match with slide block are arranged on four limits of groove, the degree of depth of groove is the height of slide block, three rims upsides of box body have the tongue-and-groove that cooperates with lid, one side cooperate frame (11) having on the lid with box body.