One thing we do with measuring is we do estimations in the grocery. I think this can help with perfectionism too. My daughter did not want to be wrong to quess how much the fruit weighed. I did the quessing and would show her it was ok when I was wrong. It was just for fun.
I also try to get DC to quess how much the bill will be at the check out. I only take the kids to the store when I have a small list.
There is a series of books called "MathStarts" for kids. They cover this topic in Super Sand Castle Saturday
http://www.stuartjmurphy.com/books/level_1/There may also be something in a series "let read and find out about science".
I think it would be fun to have a grams type scale and guess what things weighed. Or a postal scale. Or a food scale that you can find at the grocery or target. (I may want to do this too- your getting me interested.)
