Note the thumbnail below is a degraded version of the actual image which is much sharper. A Necker cube is basically a wireframe drawing of a six-sided cube such that it has no perspective as to whether you're looking at it from the top or from the bottom. This is an example of two exactly identical necker cubes, the one on the left showing an intermediate object going in "down from the top" while the one on the right shows the object going in "up from the bottom" which shows how the image can change its perspective simply by changing which face (front or back) appears behind the intervening object. 多维数据集 多维数据集内克 光学幻觉 多维数据集内克 2
A set of number rays showing either no numbers at all, numbers from 0 to 10 or numbers from -5 to 5. Useful to understand and practise the use of integer numbers. 编号 线 数学 数字射线的集
black two silhouette counting hands fortran countinghands Counting Hands Two clip art 计数 手 数学 黑色两个侧面影像计数手 Fortran Countinghands
一幅名为 “School boy 在做数学笔触 PNG Design” 的充满活力的插图捕捉了返校季的精髓。这幅矢量图展示了一位勤奋的学生全神贯注于解决数学问题。凭借其引人注目的笔触风格和 PNG 格式,它非常适合与学校、教师、学生、校长和学习相关的教育材料、演示文稿或数字设计。矢量构图可确保高质量的可扩展性,使其成为需要视觉吸引力和多功能插图的各种项目的理想选择。 学校 back-to-school 老师 数学研究矢量中风