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. number ray line Set of number rays
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. cube necker cube optical illusion 2 Necker Cubes
Paper model of a cube. Modelo de papel de um cubo. paper model cube mathematics Paper model of a cube
A set of 3 Geometry shapes floating in mid-air on a metallic platform. Drawn with Inkscape. geometry geometric shape Geometry 2
An example of a necker cube and an Impossible cube (one arm runs across the other but is still straight, which can't happen in 3D; it's an optical illusion). cube necker cube optical illusion Necker cube and impossible cube
The difference of two cubes. Typeface is Tuffy (public domain, created by Thatcher Ulrich) from openfontlibrary.org cube cub difference Difference of Two Cubes
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A set of 3 Geometric shapes floating in mid-air. Drawn with Inkscape. geometry geometric shape Geometry 3
A set of 3 Geometry Shapes floating in mid-air with a metallic floor and a metallic graph in the background. Drawn with Inkscape. geometry geometric shape Geometry 4
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library school music education text book math knowledge mathematics arithmetic learning wikibooks textbook Math Music Textbook clip art math music textbook Library School Music Education Text Book Math Knowledge Mathematics Arithmetic Learning Wikibooks Textbook
symbol square number math mathematics letter-i i-square imaginary Imaginary Math Symbol clip art imaginary math symbol Symbol Square Number Math Mathematics Letter I I Square Imaginary
Paper model of a tetrahedron. Modelo de papel de um tetraedro. paper model polyhedra mathematics Paper model of a tetrahedron
A set of 3 Geometry Shapes floating in mid-air. Drawn with Inkscape. geometry geometric shape Geometry 1
The magic constant of this square is 34. Besides its four corners sum 34, the four central number sum 34, the four middle numbers of upper and lower rows sum 34 like the four middle numbers of the columns left and right. If we divide the square into four squares have the numbers that make up each added 34. square magic roshellin Magic square
A parabola on a Cartesian coordinate grid. Typeface is Tuffy (public domain, created by Thatcher Ulrich) from openfontlibrary.org parabola math mathematics Parabola
