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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Otsikko Addition strategies within 10 (or 20)
Kuvaus 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.)
Aihe Matematiikka
Taso K-5
Tyyppi Guided Activity
Kesto 30 minuuttia
Vastaukset mukana Ei
Kieli Englanti
Avainsanat add, addition, compose, decompose
Simulaatiot Numeropeli (HTML5)


Tekijät Ian Whitacre, Dom Carorora, Azar Kamaldar
Koulu / organisaatio Florida State University
Lähetetty 11.9.2023
Päivitetty 14.10.2023