traveling with your ruler and mat
I just got home today from a family vacation 1000 miles from here. I found a way to transport my ruler and mat so that they did not get damaged in the very full mini-van. I laid the ruler and mat on the floor of the van and laid a board/piece of deep shelving over both. That way the kiddos could step right on it in getting in and out. They both stayed flat and out of the sun. Worked great!