Clock of Eras Set

This full color set printed on poster board consists of one 15"x20"control chart laminated 5 mil, one mute chart unlaminated, a control card and pre-cut arrows for each era (and eon). Minor cutting by the teacher is needed to make separate pieces for the mute layout.

Time scales shown on this chart are based on the year 2000 classifications of the International Commission on Stratigraphy and may differ from the text of older Montessori presentation sources.  (For example, the term "Neozoic" has no modern use, though it was commonly used in original time line-related materials.)

Clock of Eras set   $35.00