Count and Compare Une étoile d'or indique, les activités de haute qualité fondées sur la recherche qui suivent les directives de conception PhET.


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Titre Count and Compare
Description This activity focuses on counting and comparing numbers of objects with an emphasis on recognizing when those numbers of objects are equal. Students use matching or counting strategies to compare the cardinalities of sets of objects. The sets may consist of the same kind of object (e.g., apples) or different kinds of objects (e.g., a set of puppies and a set of apples). Multiple representations are available, which help to emphasize the numbers of objects in each set and afford different ways of making and verifying comparisons.
Sujet Mathématiques
Niveau Cm2
Type Activité guidée
Durée 30 minutes
Réponses incluses Non
Langue Anglais
Mots clés bar graph, compare, comparison, equality, inequality, vertical number line
Simulation(s) Comparaison de nombres (HTML5)


Auteur(s) Ian Whitacre, Dom Carorora, Azar Kamaldar
Ecole / Organisation Florida State University
Date de soumission 06/11/23
Date de mise à jour 06/11/23