One of the great things about raising homeschoolers is that there is always time for spontaneous field trips. If, for instance, Dad shows up from work and he wants to take you with him to a public meeting to look at road designs, there is no need to even check the calendar before you dive into some pink boots and scramble on all fours for the door. Alphabet books and math worksheets still fluttering in the air as you climb over your sister and strap yourself into your car seat. Shivering with nervous giggles as the car slides backward down the driveway. And it hardly matters where you are headed, because everything is new and everything is magical and everything is fresh. And your…