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Twelve compact teaching records make the grammar visible without pretending every pattern has the same history, medium or cultural meaning.
A motif repeats by shifting across the plane without changing orientation.
Look: Find the smallest repeat unit, then trace equal shifts horizontally and vertically.
Technique: Duplicate one unit at fixed x/y offsets.
Boundary: The diagram is ICU-authored; plane-symmetry framing is sourced, not a historical-artifact claim.
A repeat is organized by reflection across one or more axes.
Look: Look for forms whose orientation reverses across an implied or visible axis.
Technique: Reflect the motif before translating the repeat unit.
Boundary: Formal vocabulary is sourced; the teaching diagram is authored synthesis.
Reflection combines with translation along the reflection axis.
Look: Track a motif that flips and advances instead of mirroring in place.
Technique: Reflect, then offset along the axis before repeating.
Boundary: A teaching abstraction; it does not classify every banded design.
Motifs recur around repeated rotational centers, creating directional rhythm.
Look: Search for points where the same form appears at multiple orientations.
Technique: Build a four-orientation motif cluster, then tile it.
Boundary: Symmetry vocabulary is sourced; the rendered field is synthetic.
Alternating units create a strong binary rhythm and emphasize adjacency.
Look: Notice whether the eye reads cells, diagonal chains or the whole field first.
Technique: Alternate two unit states on a square grid.
Boundary: ICU-authored visual-literacy model; no cultural origin is claimed.
Parallel bands turn spacing, width and interval into the primary grammar.
Look: Compare band width to gap width and notice accents that interrupt the meter.
Technique: Repeat one directional interval, then vary one parameter at a time.
Boundary: Generic design model; no historical attribution.
Rows are offset so vertical seams no longer align into one rigid grid.
Look: Trace the row offset and watch for new diagonal flow.
Technique: Repeat horizontally, then offset alternating rows.
Boundary: The repeat model is generic; V&A sources support broader repeat-design process context.
A motif grows around a center, making angle and spoke count more salient than rectangular tiling.
Look: Find the center, then count rotational intervals and nested rings.
Technique: Construct one wedge and rotate copies around a center.
Boundary: Synthetic teaching diagram; sources support geometric-pattern context, not this exact rosette.
Continuous-looking bands cross, turn and re-enter the field.
Look: Follow one strand; mark crossings and turns before reading the whole field.
Technique: Design a path network, then assign crossing order consistently.
Boundary: The Met source supports historical geometric/interlace context; this record remains analytical.
Units meet to cover a plane in the teaching model, turning edge-fit into a visible rule.
Look: Inspect shared edges and whether one unit boundary becomes the next.
Technique: Choose a tile geometry, establish adjacency, then repeat without overlap.
Boundary: The Met learning publication supports tessellation vocabulary; the rendered example is ICU-authored.
Plant-derived motifs can form repeat systems where stems and negative space control flow.
Look: Separate the repeat unit from the naturalistic appearance of leaves or flowers.
Technique: Build around directional stems, overlaps and counter-space rather than isolated icons.
Boundary: V&A sources support Arts and Crafts repeat-pattern context; this is not a reconstruction.
A stable repeat establishes expectation, then a deliberate exception redirects attention.
Look: Locate the rule before locating the break.
Technique: Build a regular field, then change exactly one controlled property.
Boundary: ICU-authored visual hierarchy exercise.
