\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2014c.00625}
\itemau{Adhami, Mundher}
\itemti{Ratio easy, fractions hard.}
\itemso{Equals 15, No. 3, 14-16 (2009).}
\itemab
Summary: Something happens when mathematical ideas are approached `from the ground up' rather than from the `from top down'. The author looks at recent realisations in the classroom.
\itemrv{~}
\itemcc{F82 F42 D72 C32}
\itemut{ratio; proportion; fractions; approach; ratio concepts are more accessible than fractions; primary education; student activities; ratio-fraction comparisons; concept formation; learning problems; descriptive thinking; interpretative thinking; misconceptions}
\itemli{http://www.m-a.org.uk/pdf/equals\_15\_3.pdf}
\end