Back in 1984 I had the pleasure of spending several years working part-time with Dr. Chris McGowan at the Royal Ontario Museum. Chris retired recently, and he’s now penned a book for children called Abacus:
Abacus is an adventure story in which 12-year-old AP, who’s into science, travels through time with Kate, his 15-year-old sister. Kate thinks her geeky brother is a waste of space, but when he uses science to get them out of trouble, she starts changing her mind. Their journeys take them to medieval England, the Wild West, and to ancient Egypt, where AP’s science is seen as magic. And stalking them on every trip is a hooded stranger whose attacks show he’ll do anything to stop them.
I’ve just ordered a copy (it fits well with Oliver’s current interest in both time travel and dinosaurs).