High quality images don't need to cost an arm & a leg. These sites offer images that are free to use for personal or commercial use! Just be sure to pay attention to copyright licensing for each. Most are CC0, but not all. We've made note of how each of these sites can be browsed (how & if they are searchable). Searchable is great if you know what you're looking for. Sites that are not searchable, while time consuming, can be great for inspiration when you aren't quite sure what you want. | NEW
Infographics are interesting–a mash of (hopefully) easily-consumed visuals (so, symbols, shapes, and images) and added relevant character-based data (so, numbers, words, and brief sentences).
The learning application for them is clear, with many academic standards–including the Common Core standards–requiring teachers to use a variety of media forms, charts, and other data for both information reading as well as general fluency...
The Search Results: Among other useful materials, I stumbled across a pretty neat interactive image on the Cyberbee site that answers some common student questions about copyright, including the one that sent me over the edge!
"The connection between mathematics and art goes back thousands of years. Mathematics has been used in the design of Gothic cathedrals, Rose windows, oriental rugs, mosaics and tilings. Geometric forms were fundamental to the cubists and many abstract expressionists, and award-winning sculptors have used topology as the basis for their pieces. Dutch artist M.C. Escher represented infinity, Möbius bands, tessellations, deformations, reflections, Platonic solids, spirals, symmetry, and the hyperbolic plane in his works.
"Mathematicians and artists continue to create stunning works in all media and to explore the visualization of mathematics--origami, computer-generated landscapes, tesselations, fractals, anamorphic art, and more."