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• "CCSS.Math.Content.6.RP.A.3a"
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## Solve It! Lemon Tea?

### little problems with big solutions

To elicit creative student thinking, this open-ended problem asks solvers to calculate mixtures of lemon and tea.

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## Using Artwork to Explore Proportional Reasoning

By examining ratios in paintings and using a free educational app, students can size up artists' use of proportional reasoning in their creations.

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## Solve It: Student Thinking: Lemon Tea?

Solutions to a November 2013 Solve It problem are discussed, and the procedures used with problem solving are explored.

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## Revisit Pattern Blocks to Develop Rational Number Sense

A classic manipulative, used since the 1960s, continues to offer opportunities for intriguing problem solving involving proportions.

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## Proportioning Cats and Rats

This feline-rodent problem helps preservice teachers go beyond the cross-multiplication algorithm to think about proportional relationships.

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## Gone Fishing: Science, Proportions, and Probability

An outdoor context can reel in two important mathematical ideas and catch students' misconceptions in the process.

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## Debunking Myths about the Standards for Mathematical Practice

Teachers can benefit from productive and manageable suggestions to align instruction to the intention of the Common Core's Standards for Mathematical Practice.

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## Strip Diagrams: Illuminating Proportions

Use strip diagrams to model and solve problems requiring proportional reasoning.

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## Develop Reasoning through Pictorial Representations

Solutions coupled with drawings can illustrate students' understandings or misunderstandings, particularly in the area of proportional reasoning.

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## The Footprint Problem: A Pathway to Modeling

By exploring an open-ended investigation involving proportional reasoning, students were able to walk through both problem solving and modeling.