To us, school is about the love of learning. We rarely define any moment of the day as "doing school." Equal importance is given to "formal" teaching and teachable moments. One day, we invited homeschool friends over to just dig in the yard. Our younger kids transplanted bulbs and found worms. Our older children built a "bug house" by laying down rocks, putting up a canopy of twigs, laying out leaves as decorations to entice the creatures, and putting out some spiky-looking branches to deter the birds.