They learn the standard units used to measure length (meter), weight (gram), fluid volume (liter), and temperature (degree Celsius), and use the appropriate tools in situations calling for measurement.
(They; learn; the standard units used to measure length (meter), weight (gram), fluid volume (liter)) (the standard units; used; to measure length (meter), weight (gram), fluid volume) (They; use; the appropriate tools; L:in situations)
They the standard units They
learn used use
the standard units used to measure length (meter), weight (gram), fluid volume (liter)
to measure length (meter), weight (gram), fluid volume
the appropriate tools L:in situations