Measurement involves identifying an attribute to be measured (e.g., length, mass, area) and then using definable, consistent units to find the “howmuchness” of the attribute. It is important for students to engage in learning situations that help them understand different measurable attributes and that teach them to measure those attributes in meaningful ways. When students are taught measurement procedures and rules (e.g., formulas) before they understand measurement concepts, they will not fully grasp the meaning of different attributes, the processes involved in measuring, and the significance of the units used to indicate measures. (Guide to Effective Instruction in Mathematics K-3 Measurement)