Two teachers use homemade pendulums for their students to explore phase shift in sine curves. The use of Desmos’s Activity Builder enabled students to become mathematical explorers and supported their sense of mathematical agency.
Jeffrey Connelly and Pablo Garcia
Paula Beardell Krieg
This article presents an example of discovering an idea through creative play. After some trial and error, I drew a wonderful image, which I later learned was a two-dimensional view of a four-dimensional shape called tesseract.
Courtney Fox and Anna DeJarnette
This full unit in trigonometry introduces the world water crisis. Students engage in real-world problem-solving activities that access 21st-century skills while learning mathematics.
Anna Wan and Jessica Ivy
An activity connects the features of sinusoid curves to tangible manipulatives printed on a 3D printer.
S. Megan Che, Juliana Utley,, and Stacy Reeder
This article illustrates ways to extend Two Ways into high school mathematics content and advantages of doing so.