Grades K–2 · Arts & Music
How can over-and-under threads become cloth?
A piece of woven cloth begins with separate threads, yet it can hold together as one flexible sheet. The threads cross in two directions. They pass over and under one another instead of lying in two loose piles.
In the diagramOver-and-under crossings make a weaveAcross threads interlace with upright threads.upright threadsrow 1Row 1: over · under · over · underThe threads cross in two directions.Separate threads join in a plain-weave structure.
In the plain weave shown here, one across thread goes over an upright thread, then under the next. The neighboring across thread follows the opposite pattern. Each thread bends around others, and the touching threads rub against one another. Those crossings make it harder for a thread to slide straight out.
The threads remain separate threads, but their repeated crossings help them act together as fabric. The cloth can still bend because threads and their connections can move a little. Not all cloth uses this pattern: knitted cloth is made from connected loops. Different ways of joining small strands create different kinds of material.
About this explanation
Starting knowledge: Recognizing across and upright directions and noticing a simple repeating pattern.
Sources
- The George Washington University Museum and The Textile Museum — Textile Terms
- U.S. National Park Service — Weaving Patterns