Perforated hardboard

The holes are used to accept pegs or hooks to support various items, and perforated hardboards are therefore used for purposes such as tool boards in workshops.

Peg-Board is an expired trademark used as a brand name by the Masonite Corporation, first used in 1962,[1] which is often used as a generic term for perforated storage boards made of hardboard, wood, metal, or other material.

It is commonly used in retail settings along with steel rods sticking out to hold peggable products such as bagged potato chips, printer ink, and action figures.

[citation needed] Perforated hardboard and similar systems are made of a variety of materials, each of which has different characteristics that affect the range of possible uses.

[citation needed] Perforated wood is more labor-intensive to manufacture and will warp and splinter under heavy loads, but is sometimes selected for aesthetic reasons.

Concepts like the associative property of sums, multiplication tables, square and triangular numbers, can also be easily demonstrated in a graphical fashion.