Few high school students associate mathematics with playfulness. In this paper, we offer a series of lessons focused on the underlying algebraic structures of the Rubik's Cube. The Rubik's Cube offers students an interesting space to enjoy the playful side of mathematics, while appreciating mathematics otherwise lost in routine experiences.

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May 2020 For the Love of Mathematics Jokes

### Matt Enlow and S. Asli Özgün-Koca

This month's Growing Problem Solvers focuses on Data Analysis across all grades beginning with visual representations of categorical data and moving to measures of central tendency using a “working backwards” approach.

### Anne Quinn

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.

### Jane M. Wilburne and Ashley Kulbacki

A sixth-grade teacher's word task uncovers higher-level thinking and engages her students in the Standards for Mathematical Practice.

### Lisa A. Brooks and Juli K. Dixon

A second-grade teacher challenges the raise-your-hand-to-speak tradition and enables a classroom community of student-driven conversations that share both mathematical understandings and misunderstandings.

### Nicole R. Rigelman

Take a page from the humanities and have your students investigate mathematics in writing.

### Christine Suurtam

Teachers can use data from a research project to enhance their classroom assessment practices.

### Ben C. Sloop and S. Megan Che

This investigation builds on students' understandings of fairness as they explore chance using a set of nontraditional dice with special properties.