Wave Interaction

I was exploring wave interaction in Science class with a little experiment. In this experiment, I was partnered up with Ergi, and we had a medium size bin. It was probably 1x1.75 feet, and 3 inches tall. We filled it up about halfway, and then tapped the water in two places with markers, and observed and recorded what we saw. I also repeated this experiment with clay barriers that blocked the water in certain places. I uploaded scans of my sketches that I took while observing the waves interacting. The sketches weren't all that neat, and the scan didn't show them so well, so I'm sorry for the quality.
No Barriers
I noticed that waves come together, they make a pattern almost like scales on a fish. When they come together from opposite diagonal ends, they don't really come together.
One Barrier
When the barriers where were the waves would normally interact, the waves just kept going forward until they could interact.When the water was being tapped from opposite diagonal ends, the waves didn't interact, just like before, but there were sort of "dead zones" on the opposite ends of the ones where the waves were coming from. I didn't really show this that well in my sketches.
Two Barriers
I noticed that with the two barriers, depending on the position, the barriers often left the waves "trapped" and the waves didn't interact. When the barriers were positioned in a way that did allow the waves to interact, I noticed the same thing as with 1 barrier: the wave just continued until it found where it could be "let out" and interact with the other wave.