Using squares or triangles to tile a surface is easy. Place them side by side until you're done, but what about pentagons? They don't line up easily, and they leave many strange shapes in between.

Scientists and Mathematicians have tried though the ages to experiment with pentagon tessellations. Sir Roger Penrose wondered if the pentagon could be used to create a tile pattern using inscribed arcs to continue a non repeating pattern. Penrose took the pentagon and divided it up and arrived at two shapes: the kite and the dart.

These shapes can be used to create all sorts of intriguing combinations to stretch the mind and to have lots of fun as you play with them. The reverse side of all the tiles is blank to add more choices for your design.

The object is to keep the RIVERS connected as you add another tile so they flow from tile to tile, but you can have fun by combining them any way you would like.

There are 55 kites and 34 darts in each set. They are laser cut using toy grade baltic birch plywood 1/8" thick. The connecting sides are 1" long.

Have fun as you experiment with the Penrose tiles.

Not for children under the age of 3.