Hidden Fibonacci numbers, a new shape and the search for a grand unified theory of mathematics are among our choices for most ...

Over 8,000 years ago, early farming communities in northern Mesopotamia were already thinking mathematically—long before numbers were written down. By closely studying Halafian pottery, researchers ...

Duah: Using puzzles, both at home and in classrooms, can restore the often-forgotten truth that learning happens in ...

Halafian pottery shows that early agricultural societies practiced advanced mathematical thinking through plant-based art long before writing.

Browse 120+ volleyball clipart pictures stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. sports ball size ...

Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...