Last week, I had an amazing opportunity to present with my Baylor professor, Dr. Sandra Cooper, at the National Council of Teachers of Mathematics Annual Conference in San Francisco. The focus of our presentation was the three big ideas of measurement: units, partitioning, and zero point. On the heels of our presentation, today’s activity provides practice for measuring length with an emphasis on zero point. The point where a ruler originates is called the zero point. This is the place where the measurement begins. When an object is placed at the end of a ruler, finding its length is generally easy for many students. However, students often struggle to identify this point when a ruler is broken or when the object to be measured is not placed at the end of the ruler. To help students understand the concept of zero point, the activity below requires students to locate the zero point and measure the distance from the zero point to the end point for each object. To increase the rigor of this task, the zero point of each ruler is not zero. This way, students are forced to count the number of units that span the object and ignore the numbers displayed on the ruler. 
