Half Square Triangle Construction

Preface: We're going to be using 5" squares to construct the blocks, so from the background/sashing fabric, you're gong to be cutting 72 5" squares, and 72 5" squares from the blocks fabrics. You don't have to cut them all at once, just be aware that that's the plan. 

Instructions:  

Mark diagonal lines on back of 5” Background squares.

Lay marked square Right Sides Together on colored 5” square.

Stitch ¼” on both sides of marked line.

Cut apart on line.

Press to dark.

Trim each to 4” square.



Ta-Da! Now you have two half square triangles.



If that wasn't 100% understandable, here is a 30 second video showing you how to do it.