intarsia "in the round"
Pattern is worked back and forth in rows as usual, but on circular needles or dpns, so that the turning thread at the beginning of the row can be worked together with the last stitch of the row. R1 (RS): YO, knit in pattern to last stitch, work SSK with last stitch and YO from beginning of row. Turn. R2 (WS): YO, purl in pattern to last stitch, work p2tog with last stitch and YO from beginning of row.