One-Straight-Cut-Heart activities can help teachers support students’ engagement with geometry and can deepen students’ geometric reasoning.
Lauren R. Holden, Yi-Yin (Winnie) Ko, Devon W. Maxwell, Connor A. Goodwin, Cheng-Hsien Lee, Jennifer E. Runge, and Elizabeth B. Beeman
Marina Basu, Karen Koellner, Jennifer K. Jacobs, and Nanette Seago
This set of tasks progressively engages students in geometric proportional reasoning.
Robert Powers, Michelle Chamberlin, and William Dutmer
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.
Carrie Plank and Sarah Roller Dyess
Use these three strategies to support student perseverance and discourse about context.
Amanda L. Cullen
Alisan Boes, Duane C. Boes, and Nichola Hillis
We explore the statistical likelihood of one, or more, siblings in a family of nine surviving to 100 years of age.
Young adult literature can be used in secondary mathematics classrooms as a tool for students to develop and explore their own mathematical questions.
Chris Harrow and Justin Gregory Johns
Problems to Ponder provides 28 varying, classroom-ready mathematics problems that collectively span PK–12, arranged in the order of the grade level. Answers to the problems are available online. Individuals are encouraged to submit a problem or a collection of problems directly to firstname.lastname@example.org. If published, the authors of problems will be acknowledged.
This department provides a space for current and past PK–12 teachers of mathematics to connect with other teachers of mathematics through their stories that lend personal and professional support.