This selection of time-travel books are selected for readers falling between the 4th and 9th grade. A wide gap, but I think they have a broad fan appeal.No Passengers Beyond This Point by Gennifer Choldenko
With their house in foreclosure, sisters India and Mouse and brother Finn are sent to stay with an uncle in Colorado until their mother can join them, but when the plane lands, the children are welcomed by cheering crowds to a strange place where each of them has a perfect house and a clock that is ticking down the time.George Washington’s Spy by Elvira Woodruff
Ten-year-old Matt and six other children travel to 1776 Boston, living out American history as they meet Benjamin Franklin, learn about colonial medicine, and become part of a rebel spy ring.
The Castle in the Attic by Elizabeth Winthrop
A gift of a toy castle, complete with silver knight, introduces William to an adventure involving magic and a personal quest.
Tempest by Julie Cross
After his girlfriend Holly is fatally shot during a violent struggle, nineteen-year-old Jackson uses his supernatural abilities and travels back in time two years, where he falls in love with Holly all over again, learns that his father is a spy, and discovers powerful enemies of time who will stop at nothing to recruit him for their own purposes.Jim & Me by Dan Gutman
Joe and his longtime enemy, Bobby Fuller, use a vintage baseball card to travel in time, hoping to stop Jim Thorpe from participating in the 1912 Olympics and losing his medals, but instead they watch Thorpe struggle during his first season with the New York Giants.
The Lost Children by Carolyn Cohagan
When twelve-year-old Josephine falls through a worm-hole in her garden shed into another time and place, she realizes the troubles she has at home are minor compared to what she has to tackle now in the world where she has landed.