Roddick's resistance was finally broken and Federer rattled through the fourth, giving the 23, 000 spectators a master class as he wrapped up victory in two hours 26 minutes.
Never mind the WWII-style evacuee dress we've also just had to buy for the class assembly - I remember going to school wrapped in an old dust sheet to be a shepherd.
Wrapped in a smart carry case, the students carry their iPads with them into math class, science, and art and the teachers download the appropriate apps that allow the kids to draw on the touch screen, look at graphs, or go online.
Lewis then chipped in with a 52-ball 50 before Robert Croft wrapped up the innings by grabbing the last two wickets to take his tally of first-class scalps for Glamorgan to 991.