Piecing the block
Step 1 ... Square and Triangles Unit
Referring to Diagram I, match intersecting points and sew
Piece 2A triangle to two side of Piece 1A square. Repeat to add second
triangle to adjacent side of square.

Diagram I
Step 2 ... Flying Geese Unit
Draw a diagonal line on wrong side of Piece 2D red squares. Layer
Piece 2D square and Piece 1C rectangle. Sew directly on top of drawn
line. Cut away excess fabric 1/4" from seamline. Press seam allowance.
Repeat for other end of rectangle (Diagram II). Make 4.

Diagram II
Step 3 ... Assembling Block
Referring to Diagram III, sew completed units, 4 Piece 1E triangles,
and Piece 3F square together to make block.

Assembly Diagram