(Here is a tutorial for the Night and Day block. It is 6 1/2", so cute and great for scraps or leftovers. I just hurried and did this so you could have instructions, so don't look to close at my work, my points are a mess.
You need a strip 1 1/4" by the width of fabric of 2 colors. Or if you have scraps you can cut those into 1 1/4 inch strips.
Sew 1/4" seam along the length press open.
Use triangle ruler to cut pieces as shown, you need 16, (8 of each direction)
lay pieces out as shown. You can put the dark in the middle or the light. ( I like to make two sets and do one of each)
I show how it looks both ways in pic.
Then just sew as shown in pics. Make sure to press seams as you go. I hope this is enough instructions for you to understand. Enjoy! )
Thanks.. this is great.. I can see lots of these blocks getting made.. lol...