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.
Paula Beardell Krieg
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.