Row 1: Double crochet in 4th chain from hook and in each chain across. The beginning chain 3 counts as one double crochet, so at the end of Row 1 you will have 13 stitches.
Row 2: Chain 3 (counts as first double crochet), turn, double crochet in each stitch across and in the top of the chain 3 - 13 stitches at the end of Row 2.
Repeat Row 2 until all yarn has been used or Scarf is desired length.
Weave in ends.