Help your students visualize the flow of time and understand the difference between B.C.E. / B.C. (Before the Common Era / Before Christ) and C.E. / A.D. (Common Era / Anno Domini) with this hands-on, Montessori-inspired Timeline of History. This interactive material invites children to explore how time is measured across centuries, decades, and millennia — making abstract historical concepts concrete and meaningful. Sized to match the Montessori Golden Bead Material! Each century on the ti