At the beginning of the year I put together quite a few of these bags. Basically they are science experiments in a bag. That way when it comes time to do some science, all we have to do is pull out a bag and go; no need to search the house or go to the store for supplies.

He loved watching the balloon go and go and go. We did it several times.

After the experiment we drew in our journals about what we observed.

I found this experiment from A Little Learning For Two.