id: 05157611
dt: j
an: 2007a.00461
au: Brown, S.L.; Rizzardi, M.A.
ti: Averaging rates: deciding when to use the harmonic or arithmetic mean.
so: Math. Teach. (Reston) 98, No. 9, 626-630 (2005).
py: 2005
pu: National Council of Teachers of Mathematics (NCTM), Reston, VA
la: EN
cc: K44 K45
ut: means; arithmetic means; harmonic means
ci:
li:
ab: Summary: The article describes the harmonic mean and explores situations
for using it. Activities that involve hands-on practice for students
are provided. Students learn to recognize which mean, harmonic or
arithmetic, is appropriate.
rv: