As the Ball Rolls: A Quadratic Investigation Using Multiple Representations
Hands-on, open-ended activities that encourage problem solving, reasoning, communication, and mathematical connections. This issue: Students explore quadratics by tracing the path of a ball rolling on tilted easel-size grid paper.
Mittag, Kathleen Cage, Sharon Taylor.
"As the Ball Rolls: A Quadratic Investigation Using Multiple Representations."
Mathematics Teacher, 103 (1): 62-65.