This eSpark Learning instructional video aligns with Common Core State Standard 4.MD.1: Know relative sizes of measurement units within one system of units including km, m, cm, kg, g, lb., oz; 1, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in two-column table. This instructional video is only one component of eSpark's iPad-specific personalized learning system—there's more! We strea