Clocca’s Time Line/Number Line Scroll is a generic timeline which can be used and reused to explore epochs of time and/or numbers. Essentially anything that can be scaled can be used with this product. The tick-marks allow for easy scaling of TIME (years, decades, centuries, and millennia), Numbers (positive & negative numbers, fractions, etc...), and even DISTANCE. 
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How does it Work? 
Once you roll out the 12.5-foot long scroll, you notice a series of tick marks running down the center of it... There are two sizes of marks - a long one and a short one. These are the key to the multiple uses of the scroll. Used in conjunction with Clocca’s Card Sets, the Time Line Scroll’s divisions become different units based on the topic covered in the Card Set!