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Volume 116 (2023): Issue 12 (Dec 2023)

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2022–2023 Acknowledgment to Authors

MTLT acknowledges the authors who contributed in 2023.

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2022–2023 Acknowledgment to Reviewers

MTLT acknowledges the reviewers who contributed in 2023.

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Beware of “Gaps” in Students’ Fraction Conceptions

Patrick L. Sullivan, Joann E. Barnett, and Kurt Killion

Many students have a dominant part-whole conception of fractions. We examine why this is problematic and explore strategies to move students beyond this limitation.

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Building Algebraic Procedures From Concepts: Like Terms

Leah M. Frazee and Adam R. Scharfenberger

This task sequence for adding and subtracting like terms—grounded in the concepts of equivalence and algebra as generalized arithmetic—helps students see connections between concepts and procedures in algebra.

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Digital Learning Routes: An Example of Mathematical Modeling

Salomé Martínez, Flavio Guiñez, and Darío González

An online activity provides instructional strategies that can help students engage in mathematical modeling and autonomous learning.

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Encouraging Students to LOVE MATH with One-Straight-Cut Letters

Yi-Yin (Winnie) Ko, Connor A. Goodwin, Lauren Ream, and Grace Rebber

One-straight-cut activities engage middle-school students in learning about symmetry and geometric transformations.

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Experiencing Joy

Christa Jackson

What brings you joy in the teaching and learning of mathematics?

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GPS: Composing and Decomposing Shapes Across the Grades

Kyle Carpenter and Sarah Roller Dyess

Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners' growth as problem solvers across their years of school mathematics.

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Hyperbolic Duckies

Sophia Wood

Modeling exponential growth with crochet.