Subtraction stories A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines.


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Title Subtraction stories
Description Students are given subtraction story problems to solve. Specifically, the problem types are Take From, Result Unknown, or Compare Difference Unknown. They use the tools available on the Lab screen to help them solve and/or to represent their thinking (e.g., if they solve mentally or on their fingers).
Subject Mathematics
Level K-5
Type Guided Activity
Duration 30 minutes
Answers Included No
Language English
Keywords add on, compare, compose, decompose, result unknown, subtraction, take away
Simulation(s) Number Play (HTML5)


Author(s) Ian Whitacre, Dom Carorora, Azar Kamaldar
School / Organization Florida State University
Date submitted 23/09/11
Date updated 23/10/14