\input zb-basic
\input zb-matheduc
\iteman{ZMATH 2011d.00547}
\itemau{Anon.}
\itemti{Feeding fish: Activities about visual and number ratio.}
\itemso{Prim. Math. 14, No. 1, 12-16 (2010).}
\itemab
Overview: In this activity on ratio, children relate the size of fish to the amount of food to give them. They note the differences between a doubling sequence, an additive sequence of regular increase of length and a more complex sequence. The setting is an imaginary or \lq mathematical fish\rq\ story.
\itemrv{~}
\itemcc{F92 F93}
\itemut{teaching guides; visualization; concretizing; graphical representations; student activities; teaching units; primary education; lower secondary; ratio; proportion; inverse proportion; practical arithmetic; measurement; doubling; comparing; ordering; length; quantities; units; estimation; educational media; group work}
\itemli{}
\end