\input zb-basic
\input zb-matheduc
\iteman{ZMATH 1992e.37147}
\itemau{Erickson, Donna Bird}
\itemti{Students Ability to Recognize Patterns. Die Faehigkeit von Schuelern, Muster zu erkennen.}
\itemso{Sch. Sci. Math. (Oct 1991) v. 91(6) p. 255-58. CODEN: SSMAAC [ISSN 0036-6803]}
\itemab

\itemrv{~}
\itemcc{C33 C34}
\itemut{Abstract Reasoning; Mathematical Language; Lower Secondary; Upper Secondary; Mathematical Ability; Classroom Research; ; Abstraktes Denken; Mathematische Sprache; Sekundarstufe 1; Sekundarstufe 2; Mathematische Faehigkeit; Unterrichtsforschung}
\itemli{}
\end