The Escalator

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This is a sample task from While simply constructed, 6.RP The Escalator addresses aspects of both 6.RP.1 "Understand the concept of a ratio” and 6.RP.2 “Understand the concept of a unit rate a/b associated with a ratio a:b with b≠0, and use rate language in the context
of a ratio relationship." The simple extension of a traditional multiple choice item to a "choose all that apply" allows us to ask questions about the same context from the different perspectives afforded by the different RP standards in 6th grade.