This one was started in the center using a fan stitch. Each color was added to both sides to make it balanced.
This was done with granny squares using a K hook. There are 48 squares in the finished piece and a final round of black on the outside.
Granny ripple afghan
Fast and easy project. For instructions, this is one possible link: http://www.ravelry.com/patterns/library/granny-ripple-4
This pattern originally was Tunisian crochet. The squares were actually worked in single crochet, chain. A row of V-stitch was worked around each square, then a round of single crochet and finally a round of double crochet.
This is Tunisian entrelac worked with a N or P hook. The larger size hook makes the weave a little looser than normal Tunisian simple stitch. It doesn't curl as much as the tighter stitched one would.
Here is the pattern: http://www.lionbrand.com/patterns/L20319.html. If you need to see how the stitches are made, www.youtube.com has videos of how to work Tunisian crochet.