Home education provides so many opportunities to see how much information you've forgotten over a lifetime. I told Bobo recently that water boils at 100 degrees Fahrenheit, and didn't even flinch when her next question asked: what is a normal body temperature for humans? "So our blood boils when we have a fever?" Oops.
Today she needed to list all the perfect squares up to 100. Are you kidding me? She's eight. Down to google we went. I'm sure I could have figured it out on my own (?!), but why not teach her how to do a little research as well?