On-Line Jigsaw Puzzles

This puzzle has 48 pieces in classic puzzle piece shapes.  However, it can be adapted from 6 to 247 pieces with a variety of types of puzzle pieces. To do this, click on the shapes button and choose the type of shapes and number of pieces.

Biosphere in Tucson Arizona
Source: photographer Carol Highsmith, US Library of Congress

June 1st in International Children's Day.