Originally Posted by LindaG

I believe you can do this for half of a main block:

Sew together SIX strips, 2-1/2" x 12-1/2" long
Block should measure 12-1/2"x12-1/2"
Press seams in one direction
Cut once on the diagonal to make Half Square Triangle (HST)

Mix up HST - use 4 per block