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## Escape Room Math: Luna's Lines

An escape room can be a great way for students to apply and practice mathematics they have learned. This article describes the development and implementation of a mathematical escape room with important principles to incorporate in escape rooms to help students persevere in problem solving.

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## Planning Questions to Help Surface Understanding

Dude Perfect has one of the most popular YouTube channels in the United States. An example mathematical activity connected to a Dude Perfect video is described along with the incorporation of assessing and advancing questions.

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## Triangle Center Technology

The paper discusses technology that can help students master four triangle centers -- circumcenter, incenter, orthocenter, and centroid. The technologies are a collection of web-based apps and dynamic geometry software. Through use of these technologies, multiple examples can be considered, which can lead students to generalizations about triangle centers.

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## Leveraging Interactive Geometry Software to Prompt Discussion

Assess the robustness of students’ understanding of polygons and move students beyond drawing to constructing geometric shapes.

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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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## Fractions are Numbers, Too!

Student understanding of fractions as numbers, a foundational element of fraction sense and a critical prerequisite of work with operations, is explored through real-world connections.

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## Quick Reads: The Different Representations of Rational Numbers

### a good idea in a small package

Students' preferences when working with particular representations are explored.

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## Sharing Cookies: A Case Study

Gain insight into students' understanding of the concept of fraction as operator as well as their reliance on rote procedures to convert fractions to decimals.

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## Systematic Interventions for Teaching Ratios

Consider this research-based intervention approach to ratio using concrete, semiconcrete, and abstract representations to help students who struggle with this concept.

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## Orange You Glad I DID Say “Fraction Division”?

Students explore multiplicative comparisons and the meaning of remainders using their own concrete representations, including orange wedges.