Ten and how many more? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines.


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Sernav Ten and how many more?
Danasîn This activity focuses on grouping sets of objects into tens and ones and interpreting two-digit numerals as representing a number of tens and a number of ones. The goal is to help students develop a meaningful understanding of place value, focusing on numbers 10–20.
Mijar Bîrkarî
Ast K-5
Cure Guided Activity
Dem 30 xulek
Bersîvan Dihewîne Na
Ziman Îngilizî
Peyvên Girîng 1:1 correspondence, cardinality, compose, counting, decompose, place value, ten frame
Şêwekar Number Play (HTML5)


Nivîskar Ian Whitacre, Dom Carorora, Azar Kamaldar
Dibistan / Organîzasyon Florida State University
Şandin 9/11/23
Rojanekirin 10/14/23