Terry and the Folding Rule of Time
MG historical fantasy (time travel)
When twelve-year-old tomboy Teresa Roots pranks the wrong teacher, a wet and angry Mrs. Klio raises a thunderstorm in the classroom and gives her a homework assignment that changes her life. Literally. See, Mrs. Klio is the Muse of History, and she tricks Terry into using a magical folding rule (a folding measuring stick) that opens a portal in time.
Terry lands smack-dab in the path of her great-great-grandfather in 1866 Germany. But her arrival prevents his emigration and makes it impossible for Terry to finish her extra homework, finding out his
reasons for leaving his home country. Even worse, back home in her own time, she finds herself in Germany living with a mother she doesn't know. To set things right, she has to return to the past and get her great-great-grandfather on a boat to America before recruiting officers of the army draft him into service. If she fails, the family she remembers will vanish forever. And the only person she can turn to
is Mrs. Klio.
Second bell for science -- I hated old Bodger on the best of days but most of all on Monday mornings. Stretching my gangly legs, I tried not to look at old Bodger's chair, which I'd soaked with ice water. I smiled a little. Not too much. That would alert him, and he'd guess right away it was me who snuck into class before first bell. I couldn't wait to see his face. In fact, I felt downright smug until the door opened.
Instead of old Bodger, the principal entered, slumped and mousy. A lady followed with measured steps, nearly a head taller than the principal. Gorgeous black hair flowed in waves to her waist, the exact opposite to my straw-colored bob. It framed a perfect face. I remember dad telling me that a symmetric face didn't exist, but here it was. I forced myself to close my mouth, noticing that her dress looked somehow old-fashioned.