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## Now: The Metamorphosis of the Educational World

“It's a YouTube World” (Schaffhauser, 2017), and educators are using digital tools to enhance student learning now more than ever before. The research question scholars need to explore is “what makes an effective instructional video?”.

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## Interpreting Standards as Sense-Making Opportunities

Student-generated algorithms, despite being inelegant and cumbersome, can nevertheless highlight a Common Core standard on rational number subtraction to show flexibility and understanding.

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## Quick Reads: Engaging Geometry Students through Technology

### a good idea in a small package

Dynamic software is used to teach geometry, tying into the Common Core's Standard 5, “Use appropriate tools strategically.”

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## Open-ended Questions and the Process Standards

Educating students—for life, not for tests—implies incorporating open-ended questions in your teaching to develop higher-order thinking.

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## Quick Reads: Journaling: Out with the Old

### a good idea in a small package

Students' writings in math class can be used for both reflection and assessment.

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## Improving Student Reasoning in Geometry

Parallel geometry tasks with four levels of complexity involve students in writing and understanding proof.

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## Shifting understanding of mixed numbers

Students had been learning about integers and fractions on the number line. For a lesson on mixed numbers, they solved an assessment problem at the beginning of the lesson. After the lesson, the authors interviewed two students individually and asked each girl to solve the same problem again.

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## Equivalence Relations across the Secondary School Curriculum

An analysis of problems from state assessments and other sources helps preservice teachers discover analogous mathematical representations.

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## How to Leverage the Potential of Mathematical Errors

Incorporating a focus on students' mistakes into your instruction can advance their understanding.

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## Authentic Tasks in a Standards-Based World

The Meeting for Lunch problem exemplifies how standards provide more than an outline of daily activities for an entire school year.