12hon MSN
When mathematics meets aesthetics: Tessellations as a precise tool for solving complex problems
In a recent study, mathematicians from Freie Universität Berlin have demonstrated that planar tiling, or tessellation, is ...
Numbers on iPhone is a free, mobile alternative to Microsoft Excel that lets you create multiple spreadsheets, add interactive graphs, and more.
Knowing your symbols makes it easier to reuse and recycle. Groups 1, 2, and 5 are easy to recycle curbside, but groups 4, 6, and 7 are more difficult.
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