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) (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
to measure length (meter), weight (gram), fluid volume
the appropriate tools L:in situations