Match each tool to what it measures and its base unit symbol
📏 The metric system uses standard base units shared by scientists worldwide.
These five metric base units are the foundation of measurement in science class.
Each tool below measures something specific using a metric base unit.
Drag the correct quantity and symbol onto each tool —
or click a label to select it, then click a tool zone to place it.
You need to fill in both rows for every tool to submit.