Patterns! Geometry! Can you find examples of tessellations in the places around you?
— Dan Meyer (@ddmeyer) August 29, 2018
A tessellation of a flat surface is the tiling of a plane using one or more geometric shapes, called tiles, with no overlaps and no gaps.
A periodic tiling has a repeating pattern. Some special kinds include regular tilings with regular polygonal tiles all of the same shape, and semiregular tilings with regular tiles of more than one shape and with every corner identically arranged.
Look for some tiled, repeating patterns in your world, extend them by sharing here.