Assemble A Blocks
1. Sew together an assorted brown-and-teal batik triangle and an assorted light multicolor batik triangle to make a brown triangle-square (Diagram 2). Press seam toward brown-and-teal batik. The triangle-square should be 5-1/2" square including seam allowances. Repeat to make a second, matching triangle-square. Repeat to make 14 brown triangle-squares total.
2. Repeat Step 1 to make seven sets total of two matching brown triangle-squares.
3. Using assorted tan batik triangles and assorted teal batik triangles, repeat steps 1 and 2 to make seven sets of two matching triangle-squares (Diagram 3).
4. Position a prepared purple batik A arc appliqué atop a brown triangle-square, aligning raw ends of arc with raw edges of triangle-square (Diagram 4). Baste or pin in place. Using clear monofilament thread and a narrow blind-hem stitch, sew along both curved edges to make a purple arc unit (for tips, see Better Blind-Hem Stitch on page 5). Trim away excess fabric behind appliqué, leaving a 1/4" seam allowance. Repeat to make a second, matching purple arc unit.
5. Using matching brown batik A arc appliqués and teal triangle-squares, repeat Step 3 to make two matching brown arc units (Diagram 5).
6. Referring to Diagram 6, sew together two purple arc units and two brown arc units in pairs. Press seams in opposite directions. Join pairs to make block A. Press seam in one direction. Block A should be 10-1/2" square including seam allowances.
7. Repeat steps 4–6 to make seven A blocks total.