This resource focuses on teaching students how to accurately use a digital scale to measure the mass of an object, specifically a pencil, in grams. The session includes the goal of ensuring students can zero the scale and make precise measurements. It details the step-by-step process for measuring mass while encouraging metacognitive reflection on the confidence levels of students in their skills. The resource also includes reflective questions aimed at enhancing understanding of accuracy and error analysis, requiring students to think critically about their measurement processes and the implications of incorrect readings.