This activity involves finding the distance between two points in a coordinate plane and emphasizes reasoning from repeated calculations, which is one of the mathematical practices specified by the Common Core State Standards for Mathematics.
Ryota Matsuura and Yu Yan Xu
In the 1928 movie Steamboat Bill, Jr., as Buster Keaton stands in front of a house, the front wall of the house falls toward him. Keaton is unharmed as the open attic window passes over him. See photographs 1 and 2 for two views of the scene.
Low Chee Soon
Use freedom of choice to promote students' mathematical flexibility.
Leigh Haltiwanger and Amber M. Simpson
Allowing students to write in mathematics class can promote critical thinking, illustrate an awareness of mathematical connections, and result in clear communication as they share ideas comfortably with peers.
Kate Garfinkel and Masha Albrecht
Many essential ideas in mathematics depend on the practice of using multiple straight segments to approximate a curve. Certainly, this notion is an underpinning of calculus. Curve stitching is an art form that illustrates this idea: The artist uses many straight stitches to create the illusion of a curving shape. We created and assigned a curve-stitching project for an algebra unit, and in this article we include our handouts, sample student work, and our grading rubric in addition to our reflections on the activity.
Joel Amidon and Matt Roscoe
A monthly set of problems is aimed at a variety of ability levels.
Erin E. Krupa, Mika Munakata, and Karmen Yu
Can you remember your typical elementary school field day? In this article, we provide details on hosting a mathematics field day, focused on embedding rich mathematics into authentic fun-filled field day experiences.