A new book that provides a new approach to linear measurement. E. Z. Mezure is a measuring worm in the process of growing up to become a moth. Along the way she sees opportunities for using her measuring skills. E. Z. ruler removes the mystery of “all those lines on a regular ruler. In the process of learning about measurement, students will be encouraged to develop skills in critical thinking, decision making, cooperation with others, research, and evaluation, to mention a few. This book teaches U. S. linear measurement but after using this book, students should find it easier to move to the metric system of measurement.