Next we tackled estimating LARGE numbers. I divided the class into 2 groups and I took one and my assistant took the other. Each student had a clipboard and recording sheet.After a discussion of how to train our brain to group in groups of 10 or 100, we went outside and estimated how many parking spaces were in the parking lot!
Then we went to the library to estimate the number of books on a shelf.
Even though we don't know the exact number of objects we estimated, I think they came pretty close using the methods we discussed!