The Time Warp Trio is going back in time, all the way to the Stone Age, where there aren't any math problems. But there are plenty of other problems to keep Sam, Joe, and Fred on their toes, including a tribe of hostile cavewomen, a hungry-looking saber-toothed tiger, a bone-rattling earthquake, and a woolly mammoth who wants to turn them into toe-jam. But worst of all, how can The Book get them back home again when writing hasn't even been invented yet?
"You say there's nothing for boys to read? Can't find anything that mixes adventure, comedy, and a tad of hocus-pocus? Never fear, the Time Warp Trio has arrived." -Booklist
"Another great book from the dynamic duo!"
-School Library Journal, starred review
A School Library Journal Best Book of the Year
