The utility model relates to a teaching aid, in particular to a mathematical teaching aid for function image rendering, which comprises an X-axis horizontal bar, a Y-axis longitudinal bar, a connecting member and a tape ruler. The middle part of the y-axis longitudinal bar is clamped in the chute at the back side, the middle part of the x-axis horizontal bar is clamped in the chute, the left and right sides of the y-axis longitudinal bar are respectively provided with chutes, the chutes on both sides are matched with connecting parts, and the connecting parts are C-shaped structures and on both sides. The lug of the bolt is matched with the sliding grooves on the left and right sides of the y-axis longitudinal rod. A through hole is arranged at the central position of the connecting part, and bolts are arranged at the through hole. The head of the bolt is located in the cavity between the connecting part and the y-axis longitudinal rod. The bolt is connected with the shell of the tape measure on the front side of the connecting part through threads. The ruler hook of the tape measure matches the cross-section structure of the chalk. The utility model has the advantages of simple operation, only two steps are needed to complete the determination of a coordinate point, and even simplifies the drawing of x-axis and y-axis coordinates, which greatly improves the teaching efficiency of teachers and makes full use of classroom time.
【技术实现步骤摘要】
一种函数图像绘制用数学教具
本技术涉及一种教具,具体涉及一种函数图像绘制用数学教具。
技术介绍
在数学中,函数f的图像指的是所有有序对(x,f(x))组成的集合。具体而言,如果x为实数,则函数图形在平面直角坐标系上呈现为一条曲线。如果函数自变量x为两个实数组成的有序对(x1,x2),则图形就是所有三重序(x1,x2,f(x1,x2))组成的集合,呈现为曲面。目前,在数学教学中需要绘制函数图像时,需要用直尺先后在黑板上绘制x轴和y轴坐标,确定坐标点时,要在x轴和y轴坐标分别找到对应的点,然后沿点做垂直虚线,两个垂直虚线的交汇点就是坐标点,因此,至少需要四步才能完成一个坐标点的确定,费时费力。
技术实现思路
根据以上现有技术的不足,本技术提供一种函数图像绘制用数学教具,绘制函数图像方便省事,只需要两步即可快速确定坐标点。本技术所述的一种函数图像绘制用数学教具,其特征在于:包括x轴横杆、y轴纵杆、连接件和卷尺,其中,所述的y轴纵杆后侧面中部开设有卡槽,所述的x轴横杆中部卡接于卡槽内,所述的y轴纵杆左右两侧分别设置有滑槽,两侧的滑槽上配合有连接件,所述的连接件为C型结构且两侧的凸耳与y轴纵杆左右两侧的滑槽相配合,所述的连接件中央位置处开设有通孔,通孔处设置有螺栓,所述的螺栓的头部位于连接件与y轴纵杆之间的空腔内,所述的螺栓的螺杆与连接件前侧面的卷尺的壳体通过螺纹连接,所述的卷尺的尺钩与粉笔的横截面结构相匹配。其中,优选方案如下:所述的螺栓的螺杆表面加工有光滑面段和螺纹面段,其中,螺纹面段与卷尺的壳体上加工的内螺纹在长度方向上一致。此种设计可以保证螺杆外露的部位全是光滑面段 ...
【技术保护点】
1.一种函数图像绘制用数学教具,其特征在于:包括x轴横杆、y轴纵杆、连接件和卷尺,其中,所述的y轴纵杆后侧面中部开设有卡槽,所述的x轴横杆中部卡接于卡槽内,所述的y轴纵杆左右两侧分别设置有滑槽,两侧的滑槽上配合有连接件,所述的连接件为C型结构且两侧的凸耳与y轴纵杆左右两侧的滑槽相配合,所述的连接件中央位置处开设有通孔,通孔处设置有螺栓,所述的螺栓的头部位于连接件与y轴纵杆之间的空腔内,所述的螺栓的螺杆与连接件前侧面的卷尺的壳体通过螺纹连接,所述的卷尺的尺钩与粉笔的横截面结构相匹配。
【技术特征摘要】
1.一种函数图像绘制用数学教具,其特征在于:包括x轴横杆、y轴纵杆、连接件和卷尺,其中,所述的y轴纵杆后侧面中部开设有卡槽,所述的x轴横杆中部卡接于卡槽内,所述的y轴纵杆左右两侧分别设置有滑槽,两侧的滑槽上配合有连接件,所述的连接件为C型结构且两侧的凸耳与y轴纵杆左右两侧的滑槽相配合,所述的连接件中央位置处开设有通孔,通孔处设置有螺栓,所述的螺栓的头部位于连接件与y轴纵杆之间的空腔内,所述的螺栓的螺杆与连接件前侧面的卷尺的壳体通...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。