Low-tech timelines are great. But for those who like to incorporate technology in the classroom, there are many free timeline tools, including HSTRY, Timeline JS, RWT Timeline, TimeGlider, Dipity, and MyHistro. FreeTech4Teachers reviewed HSTRY and these other timelines in two very useful articles. (HSTRY got its own article because FreeTech4Teachers learned about it only after he created this chart comparing the other timeline tools.)
Have you used any of these? Share your experiences and opinions.