12 Clear Plastic Ruler

This shatter-resistant 12" ruler has both inch and metric calibrations and the see-thru plastic makes measuring a breeze. This manipulative is designed for use with (and is included in) the ShillerMath Kit I. Twenty ShillerMath lessons use this item in Book 3 (4 lessons), Book 4 (5 lessons), Book 5 (1 lesson), Book 6 (9 lessons), and the Fractions Book (1 lesson).