Elapsed Time Rulers pottery-clay weights and 4 colors are

weights and 4 colors are just right for mass comparison

13 in x 7 in x

• Includes five blades total: one standard #10 carving blade

wood carve

6" (15 cm) Ruler

Elapsed Time Rulers pottery-clay weights and 4 colors areHelp 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