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


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Názov 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.
Predmet Matematika
Úroveň K-5
Typ Demonštrácia, Sprievodné aktivity
Trvanie 30 min
Vrátane odpovedí Nie
Jazyk Angličtina
Kľúčové slová 1:1 correspondence, cardinality, counting, place value
Simulácia Hra s číslami (HTML5)


Autor(i) Ian Whitacre, Dom Carorora, Azar Kamaldar
Škola / Organizácia Florida State University
Dátum odoslania 11.9.2023
Dátum aktualizácie 14.10.2023