Typical images on jigsaw puzzles include scenes from nature, buildings, and repetitive designs- castles and mountains are common, as well as other traditional subjects. ![]() Jigsaw puzzles have been used in research studies to study cognitive abilities such as mental rotation visuospatial ability in young children. ![]() They have since come to be made primarily of interlocking cardboard pieces, incorporating a variety of images and designs. His design took world maps, and cut out the individual nations in order for them to be reassembled by students as a geographical teaching aid. Assisted by Jason Hinds, John Spilsbury, a London cartographer and engraver, is credited with commercialising jigsaw puzzles around 1760. The name "jigsaw" derives from the tools used to cut the images into pieces-variably identified as jigsaws, fretsaws or scroll saws. In the 18th century, jigsaw puzzles were created by painting a picture on a flat, rectangular piece of wood, then cutting it into small pieces. When assembled, the puzzle pieces produce a complete picture. ![]() A jigsaw puzzle (with context, sometimes just jigsaw or just puzzle) is a tiling puzzle that requires the assembly of often irregularly shaped interlocking and mosaicked pieces, each of which typically has a portion of a picture.
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