My mystery number A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines.


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Název My mystery number
Popis This activity focuses on understanding numerals as representing objects or sets of objects. It addresses the distinction between using place value and not using place value. For example, in the image above, 1 and 2 are placed next to each other. This means that one puppy and two puppies are hiding. The total number of puppies hiding is three, not twelve.
Předmět Matematika
Úroveň K-5
Typ Demonstrace, Propojená aktivita
Trvání 30 minuty
Včetně odpovědi Ne
Jazyk English
Klíčová slova 1:1 correspondence, cardinality, counting, place value
Simulace Hra s čísly (HTML5)


Autor(ři) Ian Whitacre, Dom Carorora, Azar Kamaldar
Škola / Organizace Florida State University
Datum vložení 11.9.23
Datum aktualizace 14.10.23