Elapsed Time Rulers

Help Students Visualize And Calculate Elapsed Time With A Flexible Ruler That Can Be Made Into A Circle. Place The Sliders At Start And End Times, Then Count The Time In Between The Markers. Hours Are Divided Into Five Minute Increments Marked With Dashes And 15-Minute Increments Are Also Noted. 5 Rulers Per Pack. Measures Between Two Increments Of Time. Has Slits At End Of Ruler So It Can Be Made Into A Circle. Write On/Wipe-Off. Unfolded Ruler Measures 17.5?€� X 1.75?€�, Rolls Into A 5?€� Diameter. Includes Suggested Activities.