CN203118289U - Multipurpose mathematics teaching ruler - Google Patents

Abstract

The utility model discloses a multipurpose mathematics teaching ruler and belongs to teaching aids. The multipurpose mathematics teaching ruler comprises a right-angled set square. Scale marks are arranged on the hypotenuse of the set square. One right-angle side of the set square is matched with a staff. A sliding groove is formed in the edge where the set square is matched with the staff. A protruding strip matched with the sliding groove is arranged on the staff. The staff and the set square can move relatively. A decimal point is fixedly arranged on the side, matched with the staff, of the set square. Suction cups are arranged at three angles of the back face of the set square respectively. By means of the multipurpose mathematics teaching ruler, not only can the function of the set square be achieved, but also the function of explaining decimals can be achieved, and the set square can be adsorbed onto the flat surface of a blackboard to facilitate usage.

Description

The mathematics teaching aid chis of using more

Technical field

The utility model relates to a kind of mathematical education apparatus, specifically a kind of mathematics teaching aid chi of using more.

Background technology

Mathematics is a more abstract subject, and in the teaching of mathematics, the movement of radix point causes that the rule of decimal size variation is not easy to be understood by the student, does not have special-purpose teaching aid again at this problem at present, often needs teacher to spend a lot of time to go explanation.In addition, the set square right and wrong are a kind of mathematics chi of usefulness usually, present teaching has only increased volume with set square compared with student's drawing triangulars, need when teacher uses a hand with set square by fixing at blackboard, there are a lot of inconvenience in the use, if set square can have the function that auxiliary teacher explains decimal, can also be adsorbed on the blackboard, then can bring great convenience to teaching.

The utility model content

The purpose of this utility model is to provide a kind of and uses the mathematics teaching aid chi more, and this teaching ruler not only can be realized the function of set square, can also realize explaining the function of decimal, and set square can be adsorbed on the plane of blackboard.

The technical scheme in the invention for solving the technical problem is: use the mathematics teaching aid chi more, comprise a right angle set square, the hypotenuse of set square is provided with scale, a right-angle side of described set square matches with a scale, the edge that set square cooperates with scale is provided with chute, scale is provided with the raised line that matches with described chute, and scale and set square can relatively move, and is fixed with a radix point on set square and the limit that scale cooperates; The place, three angles at the set square back side is provided with sucker respectively.

The beneficial effects of the utility model are:

1, not only can realize the function of set square, and by the movement of scale with respect to set square, the movement that can show radix point intuitively causes the rule of decimal size variation, is convenient to teacher's explanation and student's understanding, improves efficiency of teaching.

2, set square is provided with sucker, can be adsorbed on the plane of blackboard, need not teacher and pins with hand, uses convenient.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Among the figure: 1 set square, 2 suckers, 3 scales, 4 radix point, 5 chutes.

Embodiment

As shown in Figure 1.The mathematics teaching aid chis of using more, comprise a right angle set square 1, the hypotenuse of set square 1 is provided with scale, a right-angle side of described set square 1 matches with a scale 3, the edge that set square 1 cooperates with scale 3 is provided with chute 5, scale 3 is provided with the raised line that matches with described chute 5, and scale 3 can relatively move with set square 1, is fixed with a radix point 4 on set square 1 and the limit that scale 3 cooperates; The place, three angles at set square 1 back side is provided with sucker 2 respectively.

Surface at scale 3 indicates arabic numeral, set square 1 indicates the literal of the digit on the indicator scales 3 such as " individual, ten, hundred ... " with the edge that scale 3 matches, scale 3 forms with set square 1 by chute 5 and relatively moves, can make radix point 4 mobile between the different digital on the scale 3, when digital corresponding on the literal on the set square 1 and the scale 3, the figure place of numeral in decimal on the scale 3 just represented in literal on the set square 1, makes the student understand the variation that size and the figure place of the decimal that causes are moved in radix point 4 positions.

When using set square 1, can set square 1 be adsorbed on the blackboard by sucker 2, be convenient to teacher and use.

Except the described technical characterictic of instructions, all the other technical characterictics are those skilled in the art's known technology.

Claims (1)

1. use the mathematics teaching aid chi more, comprise a right angle set square, the hypotenuse of set square is provided with scale, it is characterized in that, a right-angle side of described set square matches with a scale, and the edge that set square cooperates with scale is provided with chute, and scale is provided with the raised line that matches with described chute, scale and set square can relatively move, and are fixed with a radix point on set square and the limit that scale cooperates; The place, three angles at the set square back side is provided with sucker respectively.

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