For a 36" square quilt, you'll need:
36 - print half square triangles (4 per block) (cut them from 2 1/2" strips with an Easy Angle ruler, or use your own favorite method)
36 - white half square triangles (4 per block)
288 - 2 1/2" print squares (32 per block)
Sew a white half square triangle to each print half square triangle. Press. Assemble half square triangles into nine pinwheels, one for each block.
Assemble 2 1/2" print squares into four square units. Press.
For each block, assemble one pinwheel unit and eight four patch units as shown -- the block is just a big nine-patch with a pinwheel in the center.
Make nine blocks and assemble into three rows of three. Quilt and bind. As always, if you make this quilt I'd love for you to send me a picture or link up to my weekly Let's Make Baby Quilts! linky party. There's a list of my free baby quilt tutorials over in the sidebar and you can find out when new ones are added by either following my blog or liking the Let's Make Baby Quilts Facebook page.