Addition strategies within 10 (or 20) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines.


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Název Addition strategies within 10 (or 20)
Popis This lesson emphasizes explicit representations of addition expressions and solutions. The sim allows for students to solve using Ten Frames, free objects, or a linear representation that can function like a number line. These tools can support various direct modeling and counting strategies. This lesson focuses on the use of the Lab screen specifically because it does not provide immediate feedback regarding the total number of objects. (If feedback is desired, a class could use the Ten screen instead.)
Předmět Matematika
Úroveň K-5
Typ Propojená aktivita
Trvání 30 minuty
Včetně odpovědi Ne
Jazyk English
Klíčová slova add, addition, compose, decompose
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