We are participating in an egg hatching experience through our local homeschooling group. They provide twelve eggs and all the equipment we need. We put the eggs in and then turn them three times a day. At three different points we "candle" our eggs (holding a flashlight up to the egg). Today was a candling day and... we had no idea whether any of our eggs were good or bad. Apparently it's easier to tell at day 10 so we're going to wait until then and hope no eggs explode. That's apparently a thing...