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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Título Addition strategies within 10 (or 20)
Descrição 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.)
Assunto Matemática
Nível Ensino Primário
Tipo Guided Activity
Duração 30 minutos
Respostas Incluídas Não
Idioma English
Palavras Chave add, addition, compose, decompose
Simulações Number Play (HTML5)


Autores Ian Whitacre, Dom Carorora, Azar Kamaldar
Escola / Organização Florida State University
Submetido 11-09-2023
Atualizado 14-10-2023