CN2546214Y

CN2546214Y - Ruler for student use

Info

Publication number: CN2546214Y
Application number: CN 02233915
Authority: CN
Inventors: 孔庆杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-10
Filing date: 2002-05-10
Publication date: 2003-04-23
Anticipated expiration: 2012-05-10

Abstract

Disclosed is a ruler which can be used to draw straight lines, in length measuring, in calculating, in reckoning by the abacus and to demonstrate mathematics problems. The utility model is characterized in that the edge of the ruler is graduated and three hollow runners are arranged parallel on the body of the ruler; each runner is provided with ten slide balls. The slide balls can be moved with hands to slide on the runners to demonstrate mathematics problems, calculate and reckon by the abacus.

Description

Ruler for student use

Affiliated technical field

The utility model relates to the student stationery of a kind of measurement, picture, especially can make counter at primary grades and use, and middle grade can do selfish calculations (in thousand) and use, and can demonstrate the ruler of polytype math problems.

Background technology

At present, known Ruler for student use is made up of chi body and scale, only can draw straight line and survey length, or add some geometric figure frames and draw for students, and function ratio is more single.And the exigence of student is: one, do not have counter or counter easy to carry when primary grades number and plus-minus method thereof.Two, often after learning rechoning by the abacus and study, middle grade do not have at one's side abacus, and can't reviewing knowledge already acquired.Three, line chart is the strong instrument that students ' analysis is dealt with problems, but because its abstractness, at primary school period, the student often can not draw line chart or be disinclined to picture.Actual conditions are that they almost seldom deal with problems by line chart.Some classmate even utilize the ability of line chart problem analysis also very little to graduating from primary school will arrive just start afresh of junior middle school, and these have all hindered the development of student thought greatly.Therefore, the student more needs the media of thinking of a kind of media of thinking-replacement line chart.

Summary of the invention

In order to overcome the deficiency that existing stationery can not satisfy student's needs, the utility model provides a kind of ruler, and this ruler not only possesses the function of common ruler, and energy counting, rechoning by the abacus and demonstration mathematical problem.

The technical scheme that its technical matters that solves the utility model adopts is: three cavity chutes are set, 10 the sliding pearls of packing in every groove in the chi body.During use, chi is lain on the desk.Laterally use, the sliding pearl that slides can be simulated object of which movement (as problems such as stroke, engineerings); Form line segment between pearl and the pearl, can simulate line chart.The vertical use, 10 sliding pearls are used simultaneously and can make counter, only use 7 sliding pearls and their partitions (last 2 times 5) can be done selfish calculations.

The beneficial effects of the utility model are to become miniature counter, selfish calculations and the mathematical problem demonstration device of student uniform in pencil box.Integrate starting property, interest, iconicity and dirigibility, come down to one variable, can reusable line chart.It does not have line chart so abstract, thereby can make the student earlier accept the initiation of line chart.It can make uninteresting line chart work, move, and makes that the student is glad to use it to deal with problems, and can or not be disinclined to the situation of picture line chart thereby improve the student at all.Because the relation that it almost is equal to line chart (only one on chi, one on paper), in the process that the student often uses, progressively break away from chi and, be accomplished to the transition of line chart analysis to paper.As student's the auxiliary media of thinking and teacher's aided education instrument, be bound to be subjected to liking of student and teacher, even basic education is had great profound significance.Educate functional department's popularization if can get, must make it to serve basic education, promote the development of student thought.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the front view (FV) of the utility model embodiment.

Fig. 2 is the usage that makes that ruler is made counter, demonstration " 365 " among the figure.

Fig. 3 is the usage that makes that ruler is done selfish calculations.

Fig. 4 is the count usage that makes of knowledge topic demonstration device of ruler, demonstration among the figure " the second number is than more than 5 times 4 of first number ".

1. chi bodies among the figure, 2. scale, 3. chute is 4. slided pearl, 5. slides the pearl load hole, and 6. load hole envelope card 7. cuts off, and 8. cuts off jack, 9. numerical digit mark.

Embodiment

In the embodiment shown in fig. 1, scale (2) is marked in chi body (1) edge, the even parallel cloth of chute (3) is listed under the scale (2), sliding pearl (4) is shut with load hole envelope card (6) after being packed into by sliding pearl load hole (5), anti-on-slip pearl (4) is deviate from, the recessed position of sliding pearl (4) contains chute (3) two walls, can be free to slide.Cut off (7) not time spent insertion partition jack (8), do the selfish calculations time spent and transfer to, laterally inserted chute (3) is separated sliding pearl (4) (see figure 3).Contact desktop when sliding pearl (4) bottom is used, influence is slided, and chute (3) two walls answer guide body (1) thin or protruding slightly.Numerical digit mark (9) is convenient to the student and is begun to learn.Sliding pearl (4) diameter is advisable with the 2-3 millimeter.

Claims

1, a kind of ruler, chi body edge indicates scale, it is characterized in that: be provided with chute in the chi body, sliding pearl is housed on the chute.

2, ruler according to claim 1 is characterized in that: three chutes are the cavity chute, and ten pieces of sliding pearl concaves of every groove position contains chute two walls.

3, ruler according to claim 2 is characterized in that: chute one end has greater than the wide sliding pearl load hole (5) of chute, after sliding pearl is packed into, with load hole envelope card (6) it is shut.

4, ruler according to claim 1 is characterized in that: partition (7) is housed on the chi body, and available in case of necessity its will be slided the pearl separation.