You'll be stitching in the ditch along the edges of the orange and blue zig zags and also in a zig zag pattern across the white strip section.

Mark the zig zag across the white strip with a hera marker or colored chalk and a ruler, mimicking the larger zig zags.

After it's quilted  trim and square off the whole sandwich and bind with the Tangerine Kona Cotton. (If you need a refresher course on double fold binding check out my Wool Blanket tutorial.)

• Pin and sew eight of the orange triangle squares like so. This is the top row of your first orange zig zag row.
• Repeat for the second orange zig zag row and then  make two more of these rows using the blue triangle squares.
  

Here is longer view of how the whole row will come together.

See where we're getting here? Now you can pin and sew the two halves of the rows together, the first row on top of the second. A zig zag is born!

The rest is simple. Lay it out and sew it like so:

• Orange zig zag row
  
• White strip
• Blue zig zag row
• White strip
• Orange zig zag row
• White strip
• Blue zig zag row

That's it. Here is a rough sketch of it all put together.

• Pin all of the white 4-7/8 inch squares to the blue and orange 4-7/8 inch squares right sides together.
• Mark them diagonally, from corner to corner with your Hera Marker (you can use a pencil too).
• Sew 1/4 inch seam from either side of this mark on all of the pinned squares.
• Cut the squares down the middle along your Hera Marker line.
• Iron the triangle squares with seams open.

You'll have 32 blue and white squares and 32 orange and white squares.

• Sixteen 4-7/8 inch squares from the assorted orange fabrics
• Sixteen 4-7/8 inch squares from the assorted blue fabrics
• Thirty-two 4-7/8 inch squares from the white fabric
• Three 4-1/2 inch x 32-1/2 inch strips from the white fabric

NOTE: Make the cutting easy on yourself; using a rotary cutter cut a bunch of 4-7/8 inch strips and then cut the squares from the strips.

• 1-3/4 yards of P&B Color Spectrum in White for the background.
  
• Four assorted 1/4 yards of various orange prints and solids. I used Kona Cotton in Tangerine and School Bus, Katie Jumprope in Orange Diamonds, and Aviary in Orange Woodgrain.
• Five assorted 1/4 yards in blue prints and solids. I used Kona Cotton in Pacific and Lagoon, Alexander Henry's Zoo in Pool, P and B's Dotty in Blue and White, and a sadly discontinued Robert Kaufman dot print. I think the Shot Cotton in Navy or the American Jane Look and Learn Blue Stripe would be great alternatives.

(Fat quarters would work great here too. You can use as many patterns as you like just make sure you have at least 1/2 a yard all together.  I just happened to pick 4 oranges and 5 blues.)

• 1/2 yard Kona Cotton in Tangerine for the binding
• 1-1/2 yards Alexander Henry Zoo in Pool 
• 2 spools 100% cotton thread in color 1006 and 1720
• Hera Marker or erasable fabric marker
• 1 Crib Size 100% Cotton Batting in the thinnest loft
  

PS- The finished size of this quilt is 32" X 44".