🌐EnglishEnglishEspañolFrançaisItalianoРусскийالعربية한국어EntityQ2918329· pop 10· linked from 8 articlesconservationlogical thinking ability allowing to determine that a certain quantity will remain the same despite adjustment of the container, shape, or apparent sizeAvailable in 9 languagesРусскийItalianoالعربيةBulgarianCzechHebrewSerbian한국어via Wikidata sitelinks · CC0ConnectionschildEntitydeathEntityCategoriesChild developmentCognitive psychology