Bigbear, my bot always fails me. I am so sorry for missing this post. Lately I have been so busy with the dog that I sometimes don't have my head screwed on!!! If I ever miss a post, it is very unintentional. I hope you are doing well. You are such a wonderful person and hard worker. I love your post on volume. I remember how we learned it by pouring water from one thing to another. It gave us a chance to really understand. Thank-you as always for your wonderful articles.

Please take care and have a wonderful day!!! :D