Young children learning mathematics 2026-02-15T15:47:54+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Cruikshank, Douglas E., 1941-; Fitzgerald, David L; Sheffield, Linda Jensen, 1949- (Allyn and Bacon, 1980)