CN2652672Y

CN2652672Y - Stationery board for calculating time and date

Info

Publication number: CN2652672Y
Application number: CN 03280771
Authority: CN
Inventors: 谭茂生
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-21
Filing date: 2003-09-21
Publication date: 2004-11-03
Anticipated expiration: 2013-09-21

Abstract

The utility model discloses a time zone calculating stationary board, which comprises a common stationary board with cove and a flexible time zone circular plate, and is characterized in that: the cove of the common stationary board with cove and the flexible time zone circular plate are provided with 24 longitudes according to an isometry of 15 degrees in angle separation of center of the circle; the 24 longitudes are arranged at the periphery of the cove at the common stationary board with cove, and 24 figures from 0 to 24 are respectively arranged on the 24 longitudes in anticlockwise direction for showing the time; the flexible time zone circular plate is provided with the time zone and degree. When in use, the flexible time zone circular plat is arranged inside the cove for rotating calculation, by which the time and date of each place in the world can be known. Due to the function of common stationary is available, the utility model also can be used as a drawing instrument in the mapping schoolwork of mathematics and physics in middle school, and has the advantages of multifunction.

Description

Ask a kind of time and calculate the stationery plate

Technical field

The utility model relates to a kind of teaching stationery plate, and more particularly, the utility model relates to a kind of time asks calculation stationery plate.

Background technology

Time zone in the middle school period geography teaching material, when district, day line content are the important contents in the teaching, and difficulty is bigger, because there is not audiovisual aids often can not obtain better teaching, the student also often was difficult to accept when the teacher told about this respect content.Up to the present, still there is not to ask time the object teaching utensil of calculation.

Summary of the invention

The purpose of this utility model is to overcome the defective that exists in the present above-mentioned learning aid, provides a kind of date all over the world, time to ask the stationery plate of calculation.

The purpose of this utility model is achieved by following technical proposals.

On common stationery plate, recessed circle 1 is set with protractor, geometric figure, ruler etc., the round edge of recessed circle 1 is spent line by equidistantly marking 24 warps with 15 ° of center of circle angles from 0, and mark 0 from 0 degree line inhour order on each bar warp, 1,2,24 numerals such as 23 grades are with this express time; Other is provided with a movable time zone plectane 3, and drawing on the movable time zone plectane 3 has the global stretch-out view of looking by overhead mansion, the earth arctic, and by marking 24 warps with 15 ° of spacings of center of circle angle, each warp marks the time zone and the number of degrees at place; International date line and 120 ° of special pictures of warp are deceived; The internal diameter of recessed circle 1 equates with the external diameter of movable time zone plectane 3; For ease of use, recessed circle 1 bottom and common stationery plate disjunctor, and leave marking groove 2.

The beneficial effects of the utility model are:

1, as the subsidy teaching aid, it is more convenient to give lessons when telling about the content of world time zone, when district, day line for the teacher, and the student is used for asking after the some examples of exercise of calculating various places time, date main points on top of under teacher ' s guidance.

2, the student is when the mapping operation of doing mathematics, physics, and available stationery plate replaces existing set square, protractor, ruler, and a tool is many with bringing more convenience.

Description of drawings

Fig. 1 is for being with the common stationery plate of recessed circle front view;

Fig. 2 is for being with the common stationery plate of recessed circle side-looking partial sectional view;

Fig. 3 is a movable time zone plectane front view;

Fig. 4 is a movable time zone plectane vertical view.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

1, be used for the calculation of asking on time, date all over the world:

1. movable time zone plectane 3 is placed in the recessed circle 1 with the common stationery plate of recessed circle;

2. be aligned in known Beijing time numerical value with Beijing time (120 ° of warps) of movable time zone plectane 3 with the hour time scale of recessed circle 1 round edge of the common stationery plate of recessed circle;

3. the time in the place of being asked is: this place is on which bar warp, and what the hour time scale of present and recessed circle 1 round edge of this warp was aimed at is exactly the time in this place.

4. on the movable time zone plectane 3 wherein a warp aim at the O line of recessed Fig. 1 round edge, this warp is exactly local date line; Counting in this scope of international date line (180 °) from this warp inhour is " today "; Counting to international date line clockwise from local date line, is " yesterday " in this scope.

5. the O line of international date line on movable time zone plectane 3 and recessed circle 1 round edge is on time, and the whole world is " today " simultaneously, and the hour that the various places time can directly aim at according to the warp at this place, ground reads.

2, be used for doing the mapping of mathematics, physics operation, measure the size at draw line segments length, angle, the marking groove 2 on recessed circle 1 base plate can directly be drawn rectangular coordinate system, and the geometric figure of recessed circle 1 outside can be directly according to picture.

Claims

1, asks calculation stationery plate a kind of time, it is characterized in that, on common stationery plate, recessed circle (1) is set with protractor, geometric figure, ruler etc., the round edge of recessed circle (1) is spent line by equidistantly marking 24 warps with 15 ° of center of circle angles from 0, and mark 0 from 0 degree line inhour order on each bar warp, 1,2 ... 24 numerals such as 23 grades are with this express time; Other is provided with a movable time zone plectane (3), movable time zone plectane (3) is gone up to draw the global stretch-out view of overlooking by the sky, the earth arctic, and by marking 24 warps with 15 ° of spacings of center of circle angle, each warp marks the time zone and the number of degrees at place, and international date line and 120 ° of special pictures of warp are deceived; The internal diameter of recessed circle (1) equates with the external diameter of movable time zone plectane (3); Recessed circle (1) bottom and common stationery plate disjunctor, and leave setting-out groove (2).