CN205395548U - Blackboard for mathematics teaching - Google Patents

Abstract

The utility model provides a blackboard for mathematics teaching, includes base, face, lock nut, horizontal sliding path, slide, vertical slide, drawing ruler, central pivot, ruler rocking arm, rocking arm pointer, U -shaped slide and chalk fixed block, the face is connected on the base, and through lock nut locking, each division of both ends has horizontal sliding path about the face, the slide passes through horizontal sliding path swing joint on the face, open on the slide right side has vertical slide, the drawing ruler passes through vertical slide swing joint on the slide, the ruler rocking arm is through central pivot and drawing ruler swing joint, ruler rocking arm top edge is equipped with sharp scale, rocking arm pointer fixed connection is on the ruler rocking arm, it has the U -shaped slide to open on the ruler rocking arm, the chalk fixed block passes through U -shaped slide swing joint on the ruler rocking arm. The beneficial effect of the utility model and the advantage has: adopt the utility model is used for simple accurate is drilled to the board, and the operation of being convenient for draw reduces teacher's burden of imparting knowledge to students, and the accuracy of drawing has improved the quality of instruction.

Description

blackboard for teaching mathematics

technical field

The utility model relates to a blackboard for mathematics teaching.

Background technique

In the process of mathematics teaching, it is often necessary to draw pictures on the blackboard to explain and demonstrate. Usually, the teacher holds up a fixed ruler in one hand and draws with a chalk in the other. The angle is not accurate when drawing, and the operation is time-consuming and laborious. After a long time, the arm will become sore, which will affect the quality of the teacher's teaching.

Contents of the invention

The purpose of the utility model is to provide a blackboard for mathematics teaching, which is used to facilitate the drawing demonstration of mathematics teaching.

The utility model adopts the following technical scheme: a blackboard for mathematics teaching, including a base, a board surface, a locking nut, a horizontal slideway, a slide plate, a vertical slideway, a drawing ruler, a central rotating shaft, a ruler rocker, and a rocker Pointer, U-shaped slideway and chalk fixing block; the board surface is connected to the base and locked by locking nuts. There are horizontal slideways at the upper and lower ends of the board surface, and the slide plate is movably connected to the board surface through horizontal slideways. There is a vertical slideway on the right side of the skateboard. The drawing ruler is movably connected to the skateboard through the vertical slideway. The rocker arm of the ruler is movably connected with the drawing ruler through the central rotating shaft. The arm pointer is fixedly connected on the rocking arm of the ruler, and a U-shaped slideway is arranged on the rocking arm of the ruler, and the chalk fixing block is movably connected on the rocking arm of the ruler through the U-shaped slideway.

The utility model also has the following technical features: the upper edge of the drawing ruler is provided with a linear scale, and the surface of the drawing ruler is provided with a 45° right-angle triangular hole, a 60° right-angle triangle hole and a circular hole, and the circular hole is provided on the periphery of the circle. With circular scale.

The beneficial effects and advantages of the utility model include: adopting the utility model for board performance is simple and easy, facilitates drawing operation, reduces the teaching burden of teachers, draws accurately, and improves the teaching quality.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:

Example 1

As shown in Figure 1, a blackboard for mathematics teaching includes a base 1, a board surface 2, a lock nut 3, a horizontal slide 4, a slide 5, a vertical slide 6, a drawing ruler 7, a central shaft 8, a straight Ruler rocker arm 9, rocker arm pointer 10, U-shaped slideway 11 and chalk fixing block 12; the board surface 2 is connected to the base 1 and locked by the lock nut 3, and the upper and lower ends of the board surface 2 are respectively provided with horizontal slides. Road 4, the slide plate 5 is movably connected on the board surface 2 through the horizontal slideway 4, and the right side of the slide plate 5 has a vertical slideway 6, and the drawing ruler 7 is movably connected on the slideboard 5 through the vertical slideway 6, and the drawing ruler 7 upper edge is provided with linear scale, drawing ruler 7 surface has 45 ° of right-angled triangle hole, 60 ° of right-angled triangle hole and circular hole, and circular hole peripheral circumference is provided with circular scale, and ruler rocking arm 9 passes through central rotating shaft 8 is movably connected with drawing ruler 7, and the upper edge of ruler rocking arm 9 is provided with linear scale, and rocking arm pointer 10 is fixedly connected on the ruler rocking arm 9, and U-shaped slideway 11 is arranged on the ruler rocking arm 9, and chalk The fixed block 12 is movably connected to the rocker arm 9 of the ruler through a U-shaped slideway 11 .

During use, adjust the angle of the board surface 2 to an appropriate position, rotate the lock nut 3 to fix the position of the board surface 2, fix the chalk in the chalk fixing block 12, and start drawing; slide the slide plate 5 along the horizontal slideway 4 to adjust the drawing ruler 7, the vertical position of the drawing ruler 7 is adjusted by sliding the drawing ruler 7 along the vertical slideway 6. After the adjustment, the drawing ruler 7 is moved to the required drawing position, and the drawing ruler 7 is used to draw a straight line The scale can complete the drawing of a straight line of any length. Utilize the 45° right-angled triangle hole and the 60° right-angled triangle hole on the drawing ruler 7 to complete the drawing of the 45° and 60° direction straight line. Utilize the rocker pointer 10 and the drawing ruler 7 Rotating the ruler rocker arm 9 to the corresponding position on the circumference scale can complete the drawing of a straight line in any direction, and the chalk fixed block 12 can be moved to the corresponding position by using the linear scale on the ruler rocker arm 9 to complete the drawing of a circle with any radius.

Claims (2)

1. A blackboard for mathematics teaching, including a base (1), a board surface (2), a lock nut (3), a horizontal slideway (4), a slide plate (5), a vertical slideway (6), a drawing straight Ruler (7), center shaft (8), ruler rocker arm (9), rocker arm pointer (10), U-shaped slideway (11) and chalk fixing block (12); the board surface (2) is connected to the base ( 1), and locked by the lock nut (3), it is characterized in that: the upper and lower ends of the board surface (2) are respectively provided with horizontal slides (4), and the slide plate (5) is movably connected through the horizontal slides (4) On the board surface (2), there is a vertical slideway (6) on the right side of the slideboard (5), and the drawing ruler (7) is flexibly connected to the slideboard (5) through the vertical slideway (6). The arm (9) is movably connected to the drawing ruler (7) through the central rotating shaft (8), the upper edge of the ruler rocker arm (9) is provided with a linear scale, and the rocker arm pointer (10) is fixedly connected to the ruler rocker arm (9) On, there is U-shaped slideway (11) on the ruler rocking arm (9), and the chalk fixed block (12) is movably connected on the ruler rocking arm (9) by U-shaped slideway (11). 2. A blackboard for mathematics teaching according to claim 1, characterized in that: the upper edge of the drawing ruler (7) is provided with a linear scale, and the surface of the drawing ruler (7) has a 45° right-angled triangle hole , 60° right-angled triangular hole and circular hole, and the circumference of the circular hole is provided with a circle scale.